IP Library Granted Patent US 11,338,234
Granted Patent B2
US 11,338,234 · App. 16/751,329 · Granted May 24, 2022

Air filtration media with performing enhancing additives

Inventor: Glenn F. Cueman (Denver, NC)
Assignee: PPA Industries, Inc.
B01D46/0005B01D46/0028B01D46/0038B01D46/522B01D2201/12B01D2201/30B01D2279/65
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Quick Facts
Patent No.
US 11,338,234
App. No.
16/751,329
Granted
May 24, 2022
Kind
B2
Abstract

An air filter that includes a filtration material having at least one surface, an enclosed frame surrounding said filter material but exposing said one surface, said filter material having intermittent geometric shapes of latex on said at least one surface, said latex containing an enhanced additive.

Claims (17)

1. An air filter comprising a filtration material having at least one surface, an enclosed frame surrounding said filtration material but exposing said one surface, said filtration material having intermittent geometric shapes of a latex base on said one surface intermittently dispersed over the entire said one surface, said latex base includes a latex binder and an enhanced additive incorporated into said latex binder.

2. The air filter of claim 1 , wherein said enhanced additive is at least one antimicrobial additive.

3. The air filter of claim 1 , wherein said enhanced additive is at least one odor control additive.

4. The air filter of claim 1 , wherein said enhanced additive is at least one antimicrobial additive and at least one odor control additive.

5. The air filter of claim 2 , wherein said antimicrobial additive is zinc pyrithione.

6. The air filter of claim 3 , wherein said odor control additive is selected from the group consisting of carbon, natural or synthetic zeolites, molecular sieves, silica gel, and baking soda.

7. The air filter of claim 1 , wherein the intermittent geometric shape is a circular dot having a diameter between about 0.1 mm to about 2 mm.

8. The air filter of claim 1 , wherein the intermittent geometric shape is generally square.

9. An air filter comprising a filtration material having a first side and a second side, said filtration material is folded in accordion fashion to form a plurality of v-shaped pleats and housed within a paper-board frame, said filtration material having a plurality of latex base deposits on at least said first side or said second side of the filtration material intermittently dispersed over the entire said first side or said second side, said latex base includes a latex binder, at least one antimicrobial additive incorporated into said latex binder, and at least one odor control additive incorporated into said latex binder, and the air filter has a pressure drop of between about 0.15″ to about 0.40″ with an air flow rate of between about 600 cfm to about 900 cfm.

10. The air filter of claim 9 , wherein said antimicrobial additive is zinc pyrithione.

11. The air filter of claim 9 , wherein said odor control additive is selected from the group consisting of carbon, natural or synthetic zeolites, molecular sieves, silica gel, and baking soda.

12. The air filter of claim 9 , wherein the latex base deposit is in the shape of a circular dot and the air filter contains a plurality of circular dots between about 30 per square inch to about 70 per square inch along said first side or said second side of the filtration media.

13. An air filter comprising a filtration material having at least one surface folded in accordion fashion to form a plurality of v-shaped pleats, an enclosed frame surrounding said filtration material but exposing said surface, said filtration material having circular dots of a latex base on said surface, wherein said circular dots of said latex base are dispersed along the entire said surface of said filtration material and cured on said surface of said filtration material, said latex base comprising a latex binder, an enhanced additive, and optionally a pigment.

14. The air filter of claim 13 , wherein said enhanced additive contains at least one antimicrobial additive.

15. The air filter of claim 13 , wherein said enhanced additive contains at least one odor control additive.

16. The air filter of claim 13 , wherein said enhanced additive contains at least one antimicrobial additive and at least one odor control additive.

17. The air filter of claim 13 , wherein said circular dots of said latex base have a diameter between about 0.1 mm to about 2 mm and spaced an equal distance apart on said surface.

Assignments (2)
CHANGE OF NAME Recorded Aug 8, 2025
From: PPA INDUSTRIES, INC.
To: FREUDENBERG RESIDENTIAL FILTRATION TECHNOLOGIES, INC.
Reel/Frame 072975/0823 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 29, 2020
From: CUEMAN, GLENN F.
To: PPA INDUSTRIES, INC.
Reel/Frame 051655/0228 →
Continuity (3)
Continuation In Part 15630352 · Jun 22, 2017
Provisional Application 62353070 · Jun 22, 2016
Related Publication 20200155989A1 · May 21, 2020