US 12,434,968 B2
Air filter assembly
Michael L. Gao, Oxnard, CA (US); and Kanwar Suri, Porter Ranch, CA (US)
Assigned to PTI Technologies, Inc., Oxnard, CA (US)
Filed by PTI Technologies, Inc., Oxnard, CA (US)
Filed on Jul. 1, 2022, as Appl. No. 17/856,907.
Application 17/856,907 is a continuation in part of application No. 16/601,087, filed on Oct. 14, 2019, granted, now 11,377,350.
Application 16/601,087 is a continuation in part of application No. 16/230,418, filed on Dec. 21, 2018, granted, now 10,442,690, issued on Oct. 15, 2019.
Application 16/230,418 is a continuation of application No. 15/222,512, filed on Jul. 28, 2016, granted, now 10,160,647, issued on Dec. 25, 2018.
Claims priority of provisional application 62/313,898, filed on Mar. 28, 2016.
Prior Publication US 2022/0332577 A1, Oct. 20, 2022
Int. Cl. A62B 7/08 (2006.01); B01D 50/00 (2022.01); B01D 53/02 (2006.01); B01D 53/75 (2006.01); B01D 53/86 (2006.01); B01D 53/88 (2006.01); B03C 3/00 (2006.01); B64D 13/06 (2006.01); B65D 90/22 (2006.01); C01B 13/10 (2006.01)
CPC C01B 13/10 (2013.01) [B01D 53/75 (2013.01); B01D 53/8675 (2013.01); B01D 53/885 (2013.01); B64D 13/06 (2013.01); B01D 2257/106 (2013.01); B01D 2258/06 (2013.01); B64D 2013/0651 (2013.01); B64D 2013/0685 (2013.01); C01B 2201/62 (2013.01)] 20 Claims
OG exemplary drawing
 
18. A method of filtering air comprising:
supplying air into an inlet of an air filter assembly, the air filter assembly comprising:
a housing comprising a manifold having the inlet and an outlet, and a filter bowl removably coupled to the manifold;
a binderless filtration media disposed in the housing, wherein the binderless filtration media is free of binder materials that may degrade or release volatile organic compounds under high-temperature conditions; and
a catalytic converter disposed in the housing;
wherein a flow path is defined through the housing that includes flowing through the binderless filtration media and then through the catalytic converter before exiting the housing; and
directing the air into the filter bowl; and
passing the air through the binderless filtration media; and
passing the air through the catalytic converter after the air passes through the binderless filtration media.