US 1811687A
· Goldberg et al.
· 1931
[cited by applicant]
US 3624448A
· Saurenman
· 1971
[cited by applicant]
US 3652897A
· Iosue
· 1972
[cited by applicant]
US 3769695A
· Price
· 1973
[cited by applicant]
US 3968405A
· Testone
· 1976
[cited by applicant]
US 4031599A
· Testone
· 1977
[cited by applicant]
US 4117326A
· Askman
· 1978
[cited by applicant]
US D253281S
· Kim
· 1979
[cited by applicant]
US 4216518A
· Simons
· 1980
[cited by applicant]
US 4263636A
· Testone
· 1981
[cited by applicant]
US 4264343A
· Natarajan
· 1981
[cited by applicant]
US 4284420A
· Borysiak
· 1981
[cited by applicant]
US D286765S
· Prouty et al.
· 1986
[cited by applicant]
US 4734580A
· Rodrigo et al.
· 1988
[cited by applicant]
US 4757422A
· Bossard et al.
· 1988
[cited by applicant]
US 4809127A
· Steinman et al.
· 1989
[cited by applicant]
US 4829398A
· Wilson
· 1989
[cited by applicant]
US 5034651A
· Domschat
· 1991
[cited by applicant]
US 5084077A
· Junker et al.
· 1992
[cited by applicant]
US D332942S
· Julien
· 1993
[cited by applicant]
US D353575S
· Macomber
· 1994
[cited by applicant]
US 5492557A
· Vanella
· 1996
[cited by applicant]
US 5653638A
· Nagata
· 1997
[cited by applicant]
US 5680033A
· Cha
· 1997
[cited by applicant]
US 5737176A
· Muz
· 1998
[cited by applicant]
US 5741352A
· Ford et al.
· 1998
[cited by applicant]
US 5768087A
· Vernitskiy
· 1998
[cited by applicant]
US 5879435A
· Satyapal
· 1999
[cited by applicant]
US 5931989A
· Knutsson
· 1999
[cited by applicant]
US 6019815A
· Satyapal
· 2000
[cited by applicant]
US 6118645A
· Partridge
· 2000
[cited by applicant]
US D434523S
· Ford
· 2000
[cited by applicant]
US 6156099A
· Hironaka et al.
· 2000
[cited by applicant]
US D443587S
· Sakasegawa
· 2001
[cited by applicant]
US 6252756B1
· Richie, Jr.
· 2001
[cited by applicant]
US 6330146B1
· Blitshteyn
· 2001
[cited by applicant]
US 6417581B2
· Hall
· 2002
[cited by applicant]
US 6350417B1
· Lau et al.
· 2002
[cited by applicant]
US 6464754B1
· Ford
· 2002
[cited by applicant]
US 6544485B1
· Taylor
· 2003
[cited by applicant]
US D476298S
· Lee
· 2003
[cited by applicant]
US 6576046B2
· Pruette
· 2003
[cited by applicant]
US 6744611B2
· Fuji
· 2004
[cited by applicant]
US 6791814B2
· Adachi et al.
· 2004
[cited by applicant]
US 6850403B1
· Gefter et al.
· 2005
[cited by applicant]
US 6855190B1
· Nikkhah
· 2005
[cited by applicant]
US 6902392B2
· Johnson
· 2005
[cited by applicant]
US D533832S
· Hock
· 2006
[cited by applicant]
US 7177133B2
· Riskin
· 2007
[cited by applicant]
US 7244289B2
· Su
· 2007
[cited by applicant]
US 7256979B2
· Sekoguchi et al.
· 2007
[cited by applicant]
US 7273515B2
· Yuen
· 2007
[cited by applicant]
US 7408759B2
· Gefter et al.
· 2008
[cited by applicant]
US D587198S
· Nagasawa
· 2009
[cited by applicant]
US 7492568B2
· Takayanag
· 2009
[cited by applicant]
US 7497898B2
· Sato et al.
· 2009
[cited by applicant]
US 7639472B2
· Sekoguchi
· 2009
[cited by applicant]
US 7716772B2
· Shih et al.
· 2010
[cited by applicant]
US 7739771B2
· Powell, Jr.
· 2010
[cited by applicant]
US 7764482B2
· Lee et al.
· 2010
[cited by applicant]
US 7824477B2
· Kang et al.
· 2010
[cited by applicant]
US 7916455B2
· Sekoguchi
· 2011
[cited by applicant]
US 7940509B2
· Orihara et al.
· 2011
[cited by applicant]
US 7948733B2
· Hashimoto
· 2011
[cited by applicant]
US 7961451B2
· Sekoguchi
· 2011
[cited by applicant]
US 7969707B2
· Riskin
· 2011
[cited by applicant]
US 7995321B2
· Shimada
· 2011
[cited by applicant]
US 8043573B2
· Parker et al.
· 2011
[cited by applicant]
US 8053741B2
· Sekoguchi
· 2011
[cited by applicant]
US 8106367B2
· Riskin
· 2012
[cited by applicant]
US 8134821B2
· Fukai
· 2012
[cited by applicant]
US 8328902B2
· Boyden et al.
· 2012
[cited by applicant]
US 8425658B2
· Lee
· 2013
[cited by applicant]
US 8498092B2
· Furuse et al.
· 2013
[cited by applicant]
US 8564924B1
· Waddell et al.
· 2013
[cited by applicant]
US 8710455B2
· Klochkov
· 2014
[cited by applicant]
US 8724266B2
· Uchida et al.
· 2014
[cited by applicant]
US 8861168B2
· Waddell et al.
· 2014
[cited by applicant]
US 8951024B2
· Ishii
· 2015
[cited by applicant]
US 8957571B2
· Riskin
· 2015
[cited by applicant]
US 9293895B2
· Pucciani
· 2016
[cited by applicant]
US D754314S
· Ellis et al.
· 2016
[cited by applicant]
US 9579664B2
· Marra
· 2017
[cited by applicant]
US 9623422B2
· Overdahl
· 2017
[cited by applicant]
US 9630185B1
· Riskin
· 2017
[cited by applicant]
US 9630186B2
· Back
· 2017
[cited by applicant]
US 9646806B2
· Jang
· 2017
[cited by applicant]
US 9660425B1
· Sunshine
· 2017
[cited by applicant]
US 9661725B2
· Gefter
· 2017
[cited by applicant]
US 9661727B2
· Gefter
· 2017
[cited by applicant]
US 9847623B2
· Sunshine
· 2017
[cited by applicant]
US 9849208B2
· Waddell
· 2017
[cited by applicant]
US 9859090B2
· Gefter
· 2018
[cited by applicant]
US 9948071B2
· Chen et al.
· 2018
[cited by applicant]
US 9985421B2
· Sunshine
· 2018
[cited by applicant]
US D848945S
· Lin
· 2019
[cited by applicant]
US 20030072697A1
· Taylor
· 2003
[cited by applicant]
US 20030147783A1
· Taylor
· 2003
[cited by applicant]
US 20070253860A1
· Schroder
· 2007
[cited by applicant]
US 20080160904A1
· Yi et al.
· 2008
[cited by applicant]
US 20090052108A1
· Innami
· 2009
[cited by applicant]
US 20090211459A1
· Hu et al.
· 2009
[cited by applicant]
US 20100172808A1
· Garashi
· 2010
[cited by applicant]
US 20100157503A1
· Saito
· 2010
[cited by applicant]
US 20100175391A1
· Jee et al.
· 2010
[cited by applicant]
US 20120068082A1
· Noda
· 2012
[cited by applicant]
US 20120154973A1
· Vaynerman et al.
· 2012
[cited by applicant]
US 20150255961A1
· Chen et al.
· 2015
[cited by applicant]
US 20160167059A1
· Waddell
· 2016
[cited by applicant]
AU 2014214642A1
· 2015
[cited by applicant]
CA 2108790A1
· 1995
[cited by applicant]
CN 107138028A
· 2017
[cited by applicant]
CN 111228535A
· 2020
[cited by applicant]
DE 3735219A1
· 1989
[cited by applicant]
DE 10355834A1
· 2005
[cited by applicant]
DE 202006006549U1
· 2007
[cited by applicant]
DE 102009035066A1
· 2010
[cited by applicant]
DE 102008062415A1
· 2010
[cited by applicant]
DE 202020102021U1
· 2020
[cited by applicant]
EP 0919287A2
· 1999
[cited by applicant]
EP 1878506A2
· 2008
[cited by applicant]
EP 2336665A1
· 2011
[cited by applicant]
EP 2411058A1
· 2012
[cited by applicant]
EP 2683042A2
· 2014
[cited by applicant]
EP 2905036A1
· 2015
[cited by applicant]
EP 3093564A1
· 2016
[cited by applicant]
EP 3165833A1
· 2017
[cited by applicant]
EP 3346560A1
· 2018
[cited by applicant]
FR 1494344A
· 1967
[cited by applicant]
GB 1356211A
· 1974
[cited by applicant]
GB 2117676A
· 1983
[cited by applicant]
GB 2117676A1
· 1983
[cited by applicant]
GB 2245200A
· 1992
[cited by applicant]
GB 2301179A
· 1996
[cited by applicant]
GB 2377660A
· 2003
[cited by applicant]
GB 2415774A
· 2006
[cited by applicant]
GB 2525280A
· 2015
[cited by applicant]
GB 2529173A
· 2016
[cited by applicant]
ID 00000059390001
· 2004
[cited by applicant]
JP 2681623B2
· 1996
[cited by applicant]
JP 2002043092A
· 2002
[cited by applicant]
JP 2004006152A
· 2004
[cited by applicant]
JP 2009043580A
· 2009
[cited by applicant]
JP 4509322B2
· 2010
[cited by applicant]
JP 4778289B2
· 2011
[cited by applicant]
JP 5094492B2
· 2012
[cited by applicant]
JP 2017098139A
· 2017
[cited by applicant]
JP 2011233301A
· 2017
[cited by applicant]
KR 100776572B1
· 2007
[cited by applicant]
KR 101589055B1
· 2016
[cited by applicant]
KR 20160138931A
· 2016
[cited by applicant]
KR 101800326B1
· 2017
[cited by applicant]
KR 101816255B1
· 2018
[cited by applicant]
WO 8700089A1
· 1987
[cited by applicant]
WO 9820588A1
· 1998
[cited by applicant]
WO 2006039147A2
· 2006
[cited by applicant]
WO 2007009336A1
· 2007
[cited by applicant]
WO 2007131981A1
· 2007
[cited by applicant]
WO 2010014654A1
· 2010
[cited by applicant]
WO 2010140434A1
· 2010
[cited by applicant]
WO 2011136735A1
· 2011
[cited by applicant]
WO 2012176099A1
· 2012
[cited by applicant]
WO 2013173528A1
· 2013
[cited by applicant]
WO 2015052557A1
· 2015
[cited by applicant]
WO 2015101348A1
· 2015
[cited by applicant]
WO 2015111853A1
· 2015
[cited by applicant]
WO 2015138802A1
· 2015
[cited by applicant]
WO 2016000411A1
· 2016
[cited by applicant]
WO 2016082730A1
· 2016
[cited by applicant]
WO 2016134204A1
· 2016
[cited by applicant]
WO 2016204688A1
· 2016
[cited by applicant]
WO 2017022255A1
· 2017
[cited by applicant]
WO 2014047445A1
· 2017
[cited by applicant]
WO 2017067341A1
· 2017
[cited by applicant]
WO 2017085954A1
· 2017
[cited by applicant]
WO 2017152693A1
· 2017
[cited by applicant]
WO 2017155458A1
· 2017
[cited by applicant]
WO 2017168800A1
· 2017
[cited by applicant]
WO 2018175828A1
· 2018
[cited by applicant]
WO 2018189924A1
· 2018
[cited by applicant]
WO 2018234633A1
· 2018
[cited by applicant]
WO 2019000694A1
· 2019
[cited by applicant]
WO 2019108898A1
· 2019
[cited by applicant]
WO 2016147127A1
· 2019
[cited by applicant]
WO 2020037851A1
· 2020
[cited by applicant]
WO 2020056855A1
· 2020
[cited by applicant]
WO 2020078284A1
· 2020
[cited by applicant]
WO 2020158967A1
· 2020
[cited by applicant]
WO 2020186576A1
· 2020
[cited by applicant]
WO 2020218247A1
· 2020
[cited by applicant]
Products Web Page, http://www.gpshvac.com/index.php?option=com_content&view=article&id=11&itemid=93, 1 page, Apr. 29, 2013, retrieved from Internet Archive Wayback Machine, https://web.archive.org/web/20130429232411 htt…
[cited by applicant]
RGF Environmental Air Purification Technologies—Guardian Air HVAC Cell Web Page, http://www.airstarsolutions.com/Pages/RGFguardian.aspx,3 pages, Aug. 20, 2012, retrieved from Internet Archive Wayback Machine, https://we…
[cited by applicant]
Airmaid by Interzon product brochure; Sep. 2016; Interzon AB, Propellervagn, 4A, SE-183 62 Taby, Sweden www.aimaid.com.
[cited by applicant]
Extended European Search Report mailed on Sep. 28, 2021, in European Application No.
[cited by applicant]
Global Plasma Solutions. Link: https://gpshvac.com/wp-content/uploads/2017/07/GPS- FC48-AC-IOM-Rev-.pdf Visited Jul. 5, 2019. GPS-FC48-AC-IOM-Rev Self-Cleaning Ion Generator Device. (Year: 2019).
[cited by applicant]
Pushpawala Buddhi, et al., “Efficiency of Ionizers in Removing Airborne Particles in Indoor Environments.” Journal of Electrostatics, vol. 90, pp. 79-84, Dec. 2017.
[cited by applicant]
Wang, Wei, et al., “Assessment of Indoor Air Quality Using Different Air Condition for Cooling.” Advanced Materials Research, vol. 518-523, pp. 910-913, May 2012.
[cited by applicant]
Wang, Yun Han, et al., “Research Progress of Air Purifier Principles and Material Technologies.” Advanced Materials Research, vol. 1092 1093, p. 1025-1028, Mar. 2015.
[cited by applicant]
K. Nishikawa and H. Nojima, “Air purification technology by means of cluster ions generated by discharge plasma at atmospheric pressure.” The 30th International Conference on Plasma Science, 2003. ICOPS 2003. IEEE Confe…
[cited by applicant]