国家/地区
IPC部 A（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC B32B005/02（2）
发明人
公开年 2021（2）
申请年 2021（2） 
专利权人

Filter used in device e.g. mask, breathing apparatus and face covering, vent cover and heating, ventilation, has polyurethane-based polymer foam comprising virucidal/bactericidal agent having cetylpyridinium chloride and/or dimethyloctadecyl(3-(trimethyloxysilyl)propyl)ammonium chloride.

RAMAPPA D A, JOGIKALMATH G

Diatom cloth with antibacterial, purifying and humidifying function comprises diatom material, activated carbon, graphene, catalyst, pore-forming agent and cloth.

HAN F, DU Z