国家/地区 世界知识产权组织（3） 日本（2）
IPC部 B（4）
IPC大类 B01（4）
IPC小类 B01D（4）
IPC B01D039/16（4）
发明人
公开年 2022（2）
申请年 2022（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

Production of carbon nanotube-based adsorption/filtration nanomaterial, comprises annealing carbon nanotubes to remove fullerenes and other by-products of carbon crystallization, where carbon nanotubes are subsequently immobilized on support substrate based on fibrous natural or synthetic material.

BOUSA D, BOUSA M, BOUSOVA K

Face mask e.g. surgical face mask, comprises mask component to cover wearer's mouth and nose, and fastener engaging with mask component comprising air-permeable outer layer, inner layer located on inner side of mask component, and graphene layer, where fastener connects mask component to wearer.

ZHAMU A, JANG B Z, ZHANG B

Graphene derivative used in composite used as e.g. adsorbent, has preset amount of component derived from ester bond to total of amount of components derived from carbon-carbon single bond, carbon-oxygen bond, ether and ester bonds.

SUZUKI A, IMADA T, NAITO K, YOSHINAGA N