国家/地区 世界知识产权组织（3） 中国（2）
IPC部 A（4）
IPC大类 B01（4）
IPC小类 B01D（4）
IPC B01D039/16（4）
发明人
公开年 2021（3）
申请年 2021（2） 
专利权人

Face mask for use as personal protective equipment, comprises layer comprising surface-functionalized graphene particles having specified sulfur impurity level, manganese level, and/or nitrogen oxide level.

PROMNIMIT A

Increasing an electrical and/or thermal conductivity, as well as filtering power and germ-blocking properties of textile article by preparing impregnation composition consisting of graphene, polymeric binder and wetting agent, and stirring.

CESAREO G G, RIZZI L G

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

Graphene polypropylene composite material for melt-blown cloth, comprises graphene material, electret material, hydrocarbon material which is liquid at normal temperature and polypropylene.

PAN D, XIE Z, ZHANG Y, ZHANG H