国家/地区 世界知识产权组织（4） 美国（3） 加拿大（2）
IPC部 B（5）
IPC大类 B32（5）
IPC小类 B32B（5） C01B（2） C08K（2）
IPC B32B005/18（5）
发明人
公开年 2021（5）
申请年 2021（3） 
专利权人

Multilayer structure used for forming acoustic transducers diaphragm, comprises core layer and skin layer covering core layer and contains at least graphitic material containing graphene oxide, reduced graphene oxide, graphene, graphite oxide, reduced graphite oxide and graphite.

HU K, LI X, GASKELL R, AFTER K, LEE S

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

Modular utility vehicle comprises e.g. operator cab fixed to front portion of chassis, and modular panels formed of composite sandwich material comprising surface sheet, and forming containment construct fixed to rear portion of chassis.

FORAN H C, FREEMANGIBB E

Flame retardant composite comprises resin bonded structural layers of carbon or glass fabrics including inner flame-retardant layer containing graphene and expandable graphite, and outer flame-retardant layer containing expanding graphite.

CZUBA P

Electrically conductive composition used for decorative or building underlayer material, comprises base material, fluid binder and interactive powder material having preset particle size and electrical resistivity.

BARDOU M