US 11,779,874 B2
Air filters
Semali Priyanthi Perera, Bath (GB); Barry David Crittenden, Bath (GB); Olivier Camus, Bath (GB); Yong-Min Chew, Bath (GB); and Ramya G, Bath (GB)
Assigned to University of Bath, Bath (GB)
Appl. No. 16/605,997
Filed by UNIVERSITY OF BATH, Bath (GB)
PCT Filed Apr. 18, 2018, PCT No. PCT/GB2018/051018
§ 371(c)(1), (2) Date Oct. 17, 2019,
PCT Pub. No. WO2018/193249, PCT Pub. Date Oct. 25, 2018.
Claims priority of application No. 1706126 (GB), filed on Apr. 18, 2017.
Prior Publication US 2020/0338493 A1, Oct. 29, 2020
Int. Cl. B01D 53/02 (2006.01); B01D 53/04 (2006.01); B01J 20/18 (2006.01); B01J 20/20 (2006.01); B01J 20/22 (2006.01); B01J 20/28 (2006.01); C08J 9/12 (2006.01); C08J 9/35 (2006.01)
CPC B01D 53/04 (2013.01) [B01J 20/18 (2013.01); B01J 20/20 (2013.01); B01J 20/226 (2013.01); B01J 20/28045 (2013.01); B01D 2253/102 (2013.01); B01D 2253/108 (2013.01); B01D 2253/1122 (2013.01); B01D 2253/204 (2013.01); B01D 2257/91 (2013.01); B01D 2258/06 (2013.01); C08J 9/12 (2013.01); C08J 9/35 (2013.01)] 23 Claims
OG exemplary drawing
 
1. An air filter comprising:
a filter medium formed entirely from a non-fibrous active element, said non-fibrous active element comprising:
a composite of a polymer foam and metal particles; and
an adsorbent material; and
a housing structure containing said filter medium, said housing structure comprising an air inlet and an air outlet,
wherein an entirety of an airflow path from the air inlet to the air outlet is formed by non-fibrous material,
wherein the polymer foam comprises polyimide, and
wherein the metal particles are present in an amount of greater than about 30 wt % to about 80 wt % based on the weight of the polymer foam comprising the polyimide and the metal particles.