US 12,280,184 B2
Method and apparatus for purging unwanted substances from air
Francois Hauville, Ipswich, MA (US); and Cédric Herry, Val de Reuil (FR)
Assigned to FIPAK Research And Development Company, Rowley, MA (US)
Filed by FIPAK Research and Development Company, Rowley, MA (US)
Filed on Nov. 19, 2019, as Appl. No. 16/688,155.
Application 16/688,155 is a continuation of application No. 14/046,641, filed on Oct. 4, 2013, granted, now 10,478,517.
Application 14/046,641 is a continuation in part of application No. 13/793,145, filed on Mar. 11, 2013, granted, now 9,114,338, issued on Aug. 25, 2015.
Application 13/793,145 is a continuation in part of application No. 12/998,134, granted, now 9,108,141, issued on Aug. 18, 2015, previously published as PCT/US2009/057666, filed on Sep. 21, 2009.
Application 12/998,134 is a continuation of application No. 12/465,434, filed on May 13, 2009, granted, now 8,152,899, issued on Apr. 10, 2012.
Claims priority of provisional application 61/709,773, filed on Oct. 4, 2012.
Claims priority of provisional application 61/608,871, filed on Mar. 9, 2012.
Claims priority of provisional application 61/244,218, filed on Sep. 21, 2009.
Claims priority of provisional application 61/098,440, filed on Sep. 19, 2008.
Prior Publication US 2020/0330639 A1, Oct. 22, 2020
Int. Cl. A61L 9/22 (2006.01); B01D 53/75 (2006.01); B01D 53/90 (2006.01); B01D 53/32 (2006.01); B01D 53/86 (2006.01); B08B 15/02 (2006.01)
CPC A61L 9/22 (2013.01) [B01D 53/75 (2013.01); B01D 53/90 (2013.01); B01D 53/323 (2013.01); B01D 53/864 (2013.01); B01D 53/8675 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/106 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/20761 (2013.01); B01D 2259/818 (2013.01); B08B 15/023 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An air treatment device for purging unwanted substances from air, the air treatment device comprising:
a treatment passageway having an upstream end for admitting the air which is to be treated and a downstream end for discharging the air which has been treated;
a side passageway communicating with the treatment passageway intermediate the upstream end of the treatment passageway and the downstream end of the treatment passageway;
a non-thermal plasma reactor stage disposed in the side passageway, wherein the non-thermal plasma reactor stage comprises a plurality of non-thermal plasma reactor units, wherein each of the plurality of non-thermal plasma reactor units comprises a dielectric barrier discharge (DBD) construction comprising a first electrode and a second electrode, wherein each of the plurality of non-thermal plasma reactor units is configured to generate a plasma between the first electrode and the second electrode, whereby when the air which is to be treated passes through the plasma, air byproducts comprising O3 and CO are generated; and
a catalyst stage disposed within the treatment passageway downstream of the non-thermal plasma reactor stage, wherein the catalyst stage comprises (i) MnO2 for converting the O3 generated by the plasma into O2 and (ii) CuO for converting the CO generated by the plasma into CO2.