IP Library › Granted Patent US 12,343,573
Granted Patent B1
US 12,343,573 · App. 18/913,327 · Granted Jul 1, 2025

Maskless respiratory and eye protection device for aerosols and vapors including chemical, biological, radiological, and nuclear (CBRN) contaminants

Inventor: Devabhaktuni Srikrishna (San Francisco, CA)
Assignee: Patient Knowhow, Inc.
A62B23/02A62B9/006A62B18/003B01D46/0047B01D46/442B01D46/46B01D53/02A62B7/10A62B31/00B01D46/521B01D2253/102B01D2257/30B01D2257/93B01D2273/30
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,343,573
App. No.
18/913,327
Granted
Jul 1, 2025
Kind
B1
Abstract

A respiratory and eye protection device having at least one filter and at least one axial fan. The least one filter is configured to achieve an aerosolized particle contamination filtration efficiency of 50% or greater for particles having a size of about 0.3 μm and configured to achieve a vapor contamination filtration efficiency of 50% or greater for one or more of Novichok nerve agent (A232), thickened venomous nerve agent (TVX), sulfur mustard agent (HD), thickened sulfur mustard agent (THD), soman nerve agent (GD), and sarin nerve agent (GB). During the operation and monitoring of the respiratory and eye protection device, at least one fan is activated when concentrations of select aerosolized chemical, biological, radiological, and nuclear (CBRN) agents are detected.

Claims (96)

1. A personal respiratory and eye protection device comprising:

a frame for accommodating a user of the respiratory and eye protection device;

an air processing assembly comprising:

an air processing assembly inlet for receiving ambient air;

an air processing assembly outlet;

at least one axial fan that is configured to generate an airflow to at least substantially prevent mixing of external aerosolized particle contamination in an inhalation zone of the user at a nose level, wherein the inhalation zone is about a 10-inch radius around the nose and mouth of the user; and

at least one filter stacked together with the at least one axial fan and positioned between the air processing assembly inlet and the air processing assembly outlet in a stacking direction, wherein the air processing assembly is disposed upstream from the inhalation zone with respect to a direction of the airflow generated by the at least one axial fan in the inhalation zone, wherein the air processing assembly is in-line with the inhalation zone,

wherein the at least one filter reduces contaminated air in the inhalation zone and comprises an aerosolized particle contamination filter configured to achieve an aerosolized particle contamination filtration efficiency of 95% or greater for particles having a size of about 0.3 μm, as measured in the inhalation zone at the nose level, wherein the aerosolized particle contamination filtration efficiency is calculated using an input from outside the inhalation zone and an output from within the inhalation zone,

wherein the aerosolized particle contamination filter comprises at least one pleat,

wherein substantially all air released from the air processing assembly outlet in the inhalation zone has been filtered by the at least one filter,

wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in the direction of generated airflow by the at least one axial fan before entering the inhalation zone, and

wherein the at least one axial fan is configured to generate a noise level of less than about 63 decibels (dBA), as measured within about 3 inches from an ear of the user.

2. The respiratory and eye protection device of claim 1 , wherein the at least one filter comprises a vapor contamination filter disposed before or after the aerosolized particle contamination filter in the stacking direction, wherein the vapor contamination filter comprises activated carbon.

3. The respiratory and eye protection device of claim 2 , wherein the activated carbon is impregnated with an impregnant selected from the group consisting of copper, silver, zinc, molybdenum, triethylenediamine (TEDA), zeolite, potassium iodine, and combinations of one or more of the foregoing.

4. The respiratory and eye protection device of claim 2 , wherein the vapor contamination filter is configured to achieve a vapor contamination filtration efficiency of 50% or greater for one or more of Novichok nerve agent (A232), thickened venomous nerve agent (TVX), sulfur mustard agent (HD), thickened sulfur mustard agent (THD), soman nerve agent (GD), and sarin nerve agent (GB).

5. The respiratory and eye protection device of claim 1 , wherein the aerosolized particle contamination filter is selected from the group consisting of a high-efficiency particulate air (HEPA) filter, a minimum efficiency reporting value (MERV) filter with a rating of 13 or above, and combinations of one or of the foregoing.

6. The respiratory and eye protection device of claim 1 , wherein the at least one axial fan has a fan speed ranging from about 200 to about 3,300 rotations per minute (rpm), wherein the at least one axial fan generates a volumetric airflow rate ranging from about 45 to about 90 cubic feet per minute (CFM), and wherein the at least one axial fan generates a static pressure ranging from about 2 to about 5 millimeters of water (mm H 2 O).

7. The respiratory and eye protection device of claim 1 , wherein the at least one axial fan comprises two or more case fans stacked in series.

8. The respiratory and eye protection device of claim 1 , wherein the frame comprises:

an attachment mechanism comprising a clip, band, or strap;

optionally, a protrusion coupled to the attachment mechanism; and

optionally, a crown adapted to surround a top portion of the head of the user coupled to the attachment mechanism and the protrusion,

wherein the airflow generated by the at least one axial fan is directed towards the face of the user.

9. The respiratory and eye protection device of claim 8 , wherein the frame further comprises a face shield comprising a semi-transparent material adapted to extend towards the inhalation zone.

10. The respiratory and eye protection device of claim 1 , wherein the frame comprises a canopy comprising:

a canopy inlet coupled to the air processing assembly outlet;

a canopy outlet for exhausting air introduced into the canopy; and

a canopy body between the canopy inlet and the canopy outlet made of a semi-permeable material, wherein the canopy body encloses the inhalation zone,

wherein substantially only air filtered by the at least one filter is introduced into the canopy body.

11. The respiratory and eye protection device of claim 10 , wherein a distance between the canopy inlet and the canopy outlet ranges between about 6 inches to about 3 feet.

12. The respiratory and eye protection device of claim 10 , wherein the at least one axial fan is disposed at the air processing assembly outlet and wherein the at least one axial fan is an array of axial fans comprising two or more axial fans arranged in parallel.

13. The respiratory and eye protection device of claim 10 , wherein the canopy inlet and the canopy outlet are substantially the same size and are concentrically arranged.

14. The respiratory and eye protection device of claim 10 , wherein a slope of the canopy deviates 10 degree or less with the stacking direction of the at least one axial fan and the at least one filter.

15. The respiratory and eye protection device of claim 1 , further comprising:

a controller electrically connected to the at least one axial fan and a power source;

at least one sensor for detecting one or more aerosol and/or vapor agent selected from the group consisting of Novichok nerve agent (A232), thickened venomous nerve agent (TVX), sulfur mustard agent (HD), thickened sulfur mustard agent (THD), soman nerve agent (GD), sarin nerve agent (GB), and one or more of the foregoing; and

an output,

wherein the controller is electrically connected with the output and the at least one sensor,

wherein the controller adjusts the speed of the at least one axial fan when the one or more aerosol and/or vapor agent is detected.

16. The respiratory and eye protection device of claim 15 , wherein the output is an array of light and/or audible indicators for displaying a light or generating a noise when the one or more aerosol and/or vapor agent is detected, and

wherein the controller selectively activates a light and/or audible indicator in the array of light and/or audible indicators to indicate when the one or more aerosol and/or vapor agent is detected.

17. The respiratory and eye protection device of claim 15 , wherein the output is either displayed on an onboard display and/or transmitted through one or more networks to a remote computer system when the one or more aerosol and/or vapor agent is detected.

18. The respiratory and eye protection device of claim 1 , further comprising:

a controller electrically connected to the at least one axial fan and a power source;

at least one sensor for detecting a current of the at least one axial fan; and

an output,

wherein the controller is electrically connected with the output and the at least one sensor,

wherein the controller adjusts the speed of the at least one axial fan based on when a current threshold of the at least one axial fan is exceeded in relation to a set amount of time.

19. The respiratory and eye protection device of claim 18 , wherein the output is an array of light and/or audible indicators for displaying a light or generating a noise when the current threshold of the at least one axial fan is exceeded in relation to the set amount of time, and

wherein the controller selectively activates a light and/or audible indicator in the array of light and/or audible indicators to indicate when the current threshold of the at least one axial fan is exceeded in relation to the set amount of time.

20. The respiratory and eye protection device of claim 18 , wherein the output is either displayed on an onboard display and/or transmitted through one or more networks to a remote computer system when the current threshold of the at least one axial fan is exceeded in relation to the set amount of time.

21. A personal respiratory and eye protection device comprising:

a frame for accommodating a user of the respiratory and eye protection device;

an air processing assembly comprising:

an air processing assembly inlet for receiving ambient air;

an air processing assembly outlet;

at least one axial fan that is configured to generate an airflow having a velocity of about 50 to about 500 feet per minute, as measured in an inhalation zone of the user at a nose level, wherein the inhalation zone is a 10-inch radius around the nose and mouth of the user; and

at least one filter stacked together with the at least one axial fan and positioned between the air processing assembly inlet and the air processing assembly outlet in a stacking direction, wherein the air processing assembly is disposed upstream from the inhalation zone with respect to a direction of the airflow generated by the at least one axial fan in the inhalation zone, wherein the air processing assembly is in-line with the inhalation zone,

wherein the at least one filter reduces contaminated air in the inhalation zone and comprises an aerosolized particle contamination filter, wherein the aerosolized particle contamination filter is configured to achieve an aerosolized particle contamination filtration efficiency of 95% or greater for particles having a size of about 0.3 μm, as measured in the inhalation zone at the nose level,

wherein the aerosolized particle contamination filtration efficiency is calculated using an input from outside the inhalation zone and an output from within the inhalation zone,

wherein the at least one aerosolized particle contamination filter comprises at least one pleat,

wherein substantially all air released from the air processing assembly outlet in the inhalation zone has been filtered by the at least one filter,

wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in the direction of generated airflow by the at least one axial fan before entering the inhalation zone, and

wherein the generated airflow is directed towards the face of the user in the inhalation zone by about 10 degrees or more with respect to a direction parallel to the height of the user when standing.

22. A personal respiratory and eye protection device comprising:

a frame for accommodating a user of the respiratory and eye protection device;

an air processing assembly comprising:

an air processing assembly inlet for receiving ambient air;

an air processing assembly outlet;

at least one axial fan that is configured to generate an airflow having a velocity of about 50 to about 500 feet per minute, as measured in an inhalation zone of the user at a nose level, wherein the inhalation zone is about a 10-inch radius around the nose and mouth of the user; and

at least two filters stacked together with the at least one axial fan and positioned between the air processing assembly inlet and the air processing assembly outlet in a stacking direction, wherein the air processing assembly is in-line with the inhalation zone,

wherein the at least two filters reduce contaminated air in the inhalation zone and comprise at least two aerosolized particle contamination filters, wherein the at least two aerosolized particle contamination filters are configured to achieve an aerosolized particle contamination filtration efficiency of 95% or greater for particles having a size of about 0.3 μm, as measured in the inhalation zone at the nose level, only when combined, wherein each aerosolized particle contamination filtration efficiency is calculated using an input from outside the inhalation zone and an output from within the inhalation zone,

wherein at least one of the at least two aerosolized particle contamination filters comprises a minimum efficiency reporting value (MERV) filter with a rating of 13 or above and at least one pleat,

wherein substantially all air released from the air processing assembly outlet in the inhalation zone has been filtered by the at least two filters,

wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in a direction of generated airflow by the at least one axial fan before entering the inhalation zone, and

wherein the at least one axial fan is configured to generate a noise level of less than about 63 decibels (dBA), as measured within about 3 inches from an ear of the user.

23. A personal respiratory and eye protection device comprising:

a frame for accommodating a user of the respiratory and eye protection device;

an air processing assembly comprising:

an air processing assembly inlet for receiving ambient air;

an air processing assembly outlet;

at least one axial fan that is configured to generate an airflow having a velocity of about 50 to about 500 feet per minute, as measured in an inhalation zone of the user at a nose level, wherein the inhalation zone is about a 10-inch radius around the nose and mouth of the user; and

at least one filter stacked together with the at least one axial fan and positioned between the air processing assembly inlet and the air processing assembly outlet in a stacking direction, wherein the air processing assembly is disposed upstream from the inhalation zone with respect to a direction of the airflow generated by the at least one axial fan in the inhalation zone, wherein the air processing assembly is in-line with the inhalation zone,

wherein the at least one filter reduces contaminated air in the inhalation zone and comprises at least one aerosolized particle contamination filter, wherein the at least one aerosolized particle contamination filter is configured to achieve an aerosolized particle contamination filtration efficiency of 50% or greater for particles having a size of about 0.3 μm, as measured in the inhalation zone at the nose level,

wherein the aerosolized particle contamination filtration efficiency is calculated using an input from outside the inhalation zone and an output from within the inhalation zone,

wherein the at least one aerosolized particle contamination filter comprises at least one pleat oriented substantially perpendicular to a facing direction of the user when the personal respiratory and eye protection device is worn by the user,

wherein substantially all air released from the air processing assembly outlet in the inhalation zone has been filtered by the at least one filter,

wherein the air processing assembly is coupled to the frame and processes substantially all ambient air in the direction of generated airflow by the at least one axial fan before entering the inhalation zone, and

wherein the at least one axial fan is configured to generate a noise level of less than about 63 decibels (dBA), as measured within about 3 inches from an ear of the user.

24. The respiratory and eye protection device of claim 1 , wherein the at least one pleat is oriented substantially perpendicular to a facing direction of the user when the personal respiratory and eye protection device is worn by the user.

25. The respiratory and eye protection device of claim 1 , wherein the at least one axial fan is stacked on top of the at least one filter with respect to the inhalation zone.

26. The respiratory and eye protection device of claim 1 , wherein the size of the at least one filter is configured to substantially prevent the airflow generated by the at least one axial fan from bypassing the at least one filter.

27. The respiratory and eye protection device of claim 1 , wherein the respiratory and eye protection device does not comprise a face shield.

28. The respiratory and eye protection device of claim 1 , wherein the respiratory and eye protection device further comprises a counterweight for balancing the weight of the air processing assembly.

29. The respiratory and eye protection device of claim 1 , wherein the aerosolized particle contamination filter is a MERV filter with a rating of 13 or above comprising filter media with at least two exposed edges.

30. The respiratory and eye protection device of claim 1 , wherein the at least one axial fan is configured to generate an airflow having a velocity of about 50 to about 500 feet per minute, as measured in an inhalation zone at nose level.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 1, 2025
From: SRIKRISHNA, DEVABHAKTUNI
To: PATIENT KNOWHOW, INC.
Reel/Frame 070996/0111 →
References Cited (82)
US 6463746B1 · Bethuy · 2002 [cited by examiner]
US 8128358B2 · McLennan · 2012 [cited by applicant]
US 8152484B2 · Bilodeau et al. · 2012 [cited by applicant]
US 8491685B2 · Witter et al. · 2013 [cited by applicant]
US 8567403B1 · Lu · 2013 [cited by examiner]
US 8754740B2 · Pinto et al. · 2014 [cited by applicant]
US 9551504B2 · Arensmeier et al. · 2017 [cited by applicant]
US 10774846B2 · Hur et al. · 2020 [cited by applicant]
US 11134729B1 · Schwartz et al. · 2021 [cited by applicant]
US 11166497B1 · Wilson · 2021 [cited by examiner]
US 12090492B2 · Bibby · 2024 [cited by applicant]
US 20090243527A1 · Kakiuchi · 2009 [cited by examiner]
US 20110308524A1 · Brey · 2011 [cited by examiner]
US 20130118506A1 · Osipov et al. · 2013 [cited by applicant]
US 20150280617A1 · Kondou · 2015 [cited by applicant]
US 20170189727A1 · Hunter · 2017 [cited by examiner]
US 20180311515A1 · Wilson · 2018 [cited by examiner]
US 20190275359A1 · Shen · 2019 [cited by examiner]
US 20210177084A1 · Conaway, Sr. · 2021 [cited by examiner]
US 20210289854A1 · Popa-Simil · 2021 [cited by examiner]
US 20220095736A1 · Henshaw · 2022 [cited by examiner]
US 20220126126A1 · Clack · 2022 [cited by applicant]
US 20220330630A1 · Vandendorpe · 2022 [cited by examiner]
US 20220331619A1 · Joseph · 2022 [cited by examiner]
US 20220354270A1 · Dymmel · 2022 [cited by examiner]
US 20220387829A1 · Mattila · 2022 [cited by examiner]
US 20230109493A1 · de Jong · 2023 [cited by applicant]
US 20230256270A1 · Shoham et al. · 2023 [cited by applicant]
US 20230338603A1 · Blum et al. · 2023 [cited by applicant]
US 20240183555A1 · Srikrishna · 2024 [cited by applicant]
EP 4074282A1 · 2022 [cited by applicant]
JP 2011226655A · 2011 [cited by applicant]
KR 102306995B1 · 2021 [cited by applicant]
WO 2023081506A1 · 2023 [cited by applicant]
Dhyani, H. et al. (Published Apr. 17, 2024). Detoxification of toxic nerve agent sarin utilizing cupric oxide functionalized activated carbon fabric composite for advanced NBC Protective Clothing. Composite Interfaces, … [cited by examiner]
Fan Hat—Men's Women's Novelty Hat—Hat with Built in Solar-Unisex USB Charging 3-Speed Fun Baseball Cap (US, Alpha, 3X-Small, 4X-Large, Black). Datasheet [online]. Amazon.com, Inc., 2024 [retrieved on Nov. 24, 2024]. Ret… [cited by applicant]
X post entitled “Introducing the LaminAir. *Safer indoor dining. Safer working in the office.* At least double-digit exposure reduction factors, while breathing 12 inches away from the device.” 1 page, posted Dec. 21, 2… [cited by applicant]
Air Shield Pro. Datasheet [online]. Trend Tool Technology Inc. [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.trend-usa.com/airpro>. [cited by applicant]
Srikrishna, Devabhaktuni. “Pentagon Found Daily, Metagenomic Detection of Novel Bioaerosol Threats to Be Cost-Prohibitive: Can Virtualization and AI Make It Cost-Effective?. ” Health security 22.2 (Apr. 16, 2024): 108-1… [cited by applicant]
Lynch, Jim,. An invisible mask? Wearable air curtain, treated to kill viruses, blocks 99.8% of aerosols [serialonline], Jul. 8, 2024, [retrieved on Nov. 14, 2024]. Retrieved from the Internet <https://news.engin.umich.e… [cited by applicant]
Screen captures from YouTube video clip entitled “An invisible, virus-killing mask,” 3 pages, uploaded on Jul. 8, 2024 by user “Michan Engineering”. Retrieved from Internet: <https://www.youtube.com/watch?v=iGMXfB-g0bY>. [cited by applicant]
Department of The Air Force, Instruction 10-2503, Chemical, Biological, Radiological, Nuclear, (CBRN) Defense Program, Oct. 6, 2023. [cited by applicant]
Axial fans in series or parallel operation. Datasheet [online]. Noctura. [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://noctua.at/en/axial-fans-in-series-or-parallel-operation>. [cited by applicant]
X post entitled “The Warp Core Family.” 1 page, posted Jan. 1, 2024 by user “@TheFandelier”. Retrieved from Internet: <URL: https://x.com/TheFandelier/status/1742667052652036240>. [cited by applicant]
X post entitled “I love stacking!” 1 page, posted Jan. 2, 2024 by user “@TheFandelier”. Retrieved from Internet: <URL: https://x.com/TheFandelier/status/1742324759495639207>. [cited by applicant]
X post entitled “Sorry I was talking about stacking Cylinders.” 1 page, posted Jan. 2, 2024 by user “@TheFandelier”. Retrieved from Internet: <URL: https://x.com/TheFandelier/status/1742360502326730909>. [cited by applicant]
Fox, Joey,. Intro To Activated Carbon Filters. It's Airborne, [serialonline], [retrieved on Nov. 14, 2024]. Retrieved from the Internet <URL: https://itsairborne.com/intro-to-activated-carbon-filters-06d7750eb92a>. [cited by applicant]
Military, Industrial Use Impregnated Activated Carbon. Datasheet [online]. Xiamen All Carbon Corporation, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.allcarbon.net/military-industri… [cited by applicant]
ASZM-TEDA. Datasheet [online]. CalgonCarbon, 2012 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.calgoncarbon.com/app/uploads/4_ASZM_TEDA_1pg_0917.pdf>. [cited by applicant]
Capacity Index for Gases, Vapors and Fumes Removed by Austin Healthmate™ Products. Datasheet [online]. Austin Air Systems [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://austinair.com/wp-content… [cited by applicant]
The Austin Air HealthMate® Plus removes the widest range of chemicals, gases and VOCs in your home. Datasheet [online]. Austin Air Systems, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://a… [cited by applicant]
Filter Evaluation. Datasheet [online]. Devcom Chemical Biological Center, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.cbc.devcom.army.mil/engineering/test/test-reliability-evaluatio… [cited by applicant]
HealthMate Plus. Datasheet [online]. Austin Air Systems, 2022 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://austinair.com/shop/healthmate-plus/>. [cited by applicant]
Austin Air Systems. Datasheet [online]. Better Living with Air & More, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.airnmore.com/austin-air/>. [cited by applicant]
CBRN/ColPro Filters. Datasheet [online]. HDT Global, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.hdtglobal.com/series/cbrncolpro-filters/>. [cited by applicant]
LCD 4. Datasheet [online]. Smiths Detection, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.smithsdetection.com/products/lcd-4/>. [cited by applicant]
Filtrete 12×24×1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack. Datasheet [online]. Amazon.com, Inc., 2024 [retriev… [cited by applicant]
Nordic Pure 12×24×4 (11_½×23_⅜×3_⅝) Pleated MERV 13 Air Filters 2 Pack. Datasheet [online]. Amazon.com, Inc., 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.amazon.com/gp/product/B005E… [cited by applicant]
Filtrete 20×20×1 AC Furnace Air Filter, MERV 13, MPR 1900, Premium Allergen, Bacteria & Virus Filter, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 4-Pack. Datasheet [online]. Amazon.com, Inc., 2024 [retriev… [cited by applicant]
Team Wendy® Exfil®/ Epic® Counterweight Kit. Datasheet [online]. Team Wendy [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.teamwendy.com/products/helmets-accessories/parts-accessories/exfil… [cited by applicant]
AirTulip Sleep. Datasheet [online]. AirTulip, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <https://airtulip.co/products/sleep-air-purifier-headboard>. [cited by applicant]
Cortellessa, Gino, et al. “Effectiveness of a portable personal air cleaner in reducing the airborne transmission of respiratory pathogens.” Building and Environment 235 (May 1, 2023): 110222. [cited by applicant]
Engineering Controls To Reduce Airborne, Droplet and Contact Exposures During Epidemic/Pandemic Response. National Institute for Occupational Safety and Health [serialonline], Apr. 2, 2020, [retrieved on Nov. 24, 2024].… [cited by applicant]
EOD's Streamlined “Leak, Seal and Pack” Solution. Datasheet [online]. AirTulip, 2015 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.adsinc.com/news/eods-streamlined-leak-seal-pack-solution>. [cited by applicant]
Corsi-Rosenthal Box. Wikipedia, The Free Encyclopedia, Wikimedia Foundation, [serialonline], [retrieved on Nov. 14, 2024]. Retrieved from the Internet <URL: https://en.wikipedia.org/wiki/Corsi%E2%80%93Rosenthal_Box>. [cited by applicant]
Srikrishna, Devabhaktuni. “Can 10× cheaper, lower-efficiency particulate air filters and box fans complement High-Efficiency Particulate Air (HEPA) purifiers to help control the COVID-19 pandemic?.” Science of The Total… [cited by applicant]
Next-Gen Corsi-Rosenthal Box & Double-Barrel HEPA Big Cleaning at a Whisper. Datasheet [online]. Clean Air Kits, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.cleanairkits.com/>. [cited by applicant]
MA-WM45 Air Purifier. Datasheet [online]. Medify Air, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://medifyair.com/products/ma-45-air-purifier>. [cited by applicant]
OA600 Nitro Series. Datasheet [online]. Omni CleanAir, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://omnicleanair.com/products/oa600-nitro/>. [cited by applicant]
B-Air® RA-650 Hepa Air Scrubber w/GFCI Daisy Chain—Blue. Datasheet [online]. T&G Chemical & Supply Company, Inc., 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.tgchemical.com/catalog/… [cited by applicant]
X post entitled “Our commercial air cleaner, the Blast, delivers a whopping 950m3/hr at noise levels of 43dBA making it one of the quietest and most effective air purifiers in the market.” 1 page, posted Mar. 14, 2024 b… [cited by applicant]
Lennox 19L14-20″×20″×5″ Healthy Climate HCF14-13 Air Filter, MERV 13 (2-Pack). Datasheet [online]. Amazon.com, Inc., 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.amazon.com/gp/produc… [cited by applicant]
Lennox X7935 Carbon Clean Healthy Climate MERV 16 Filter (2 Pack). Datasheet [online]. Amazon.com, Inc., 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.amazon.com/Lennox-Carbon-Healthy… [cited by applicant]
Supplementary Air Filtered Exchanges (SAFE). Patient Knowhow, Inc. [serialonline], [retrieved on Nov. 24, 2024]. Retrieved from the Internet <URL: https://www.patientknowhow.com/safe.html>. [cited by applicant]
QuietCool 2830 CFM Smart App Controlled 3-Speed Gable Mount Attic Fan Datasheet [online]. Home Depot, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://www.homedepot.com/p/QuietCool-2830-CFM-… [cited by applicant]
Wearable virus defense. Datasheet [online]. Respiray, 2024 [retrieved on Nov. 24, 2024]. Retrieved from the Internet: <URL: https://respiray.com/wearable-personal-air-purifier-for-viruses-bacteria/>. [cited by applicant]
Song, Victoria,. My week with Dyson's absurd wearable air purifier. The Verge, [serialonline], Apr. 27, 2023, [retrieved on Nov. 14, 2024]. Retrieved from the Internet <URL: https://www.theverge.com/23698352/dyson-zone-… [cited by applicant]
X post entitled “Ok here's a technical breakdown of why the “@Dyson Zone™ Air-Purifying Headphones” aka. the Snot Cannon aka. the Wearable SuperSpreader Event is such a staggeringly bad idea and a significant danger to … [cited by applicant]
Keisar, David, et al. “Development and evaluation of a fluidic facemask for airborne transmission mitigation.” Experimental Thermal and Fluid Science 141 (2023): 110777. [cited by applicant]
Lindsley, William G., et al. “A comparison of performance metrics for cloth masks as source control devices for simulated cough and exhalation aerosols.” Aerosol Science and Technology 55.10 (2021): 1125-1142. [cited by applicant]
Screen captures from YouTube video clip entitled “Do It Yourself: Maintain Your Filter Tester's Performance,” 3 pages, uploaded on Dec. 7, 2020 by user “TSI Incorporated”. Retrieved from Internet: <https://www.youtube.c… [cited by applicant]
Screen captures from YouTube video clip entitled “Operation of TSIs Automated Filter Tester Model 8130,” 2 pages, uploaded on Jul. 14, 2016 by user “TSI Incorporated”. Retrieved from Internet: <https://www.youtube.com/w… [cited by applicant]