国家/地区
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC B01D039/08（2）
发明人
公开年 2022（2）
申请年
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

Processing polytetrafluoroethylene emulsion modified complex filter material useful in e.g. filter device comprises e.g. using glass fiber, polyphenylsulfone terephthalamide fiber and polyimide fiber, carding, complexing dust-facing surface with microfiber layer, drying, singeing and baking.

WANG D, SHI Z