国家/地区 美国（8）
IPC部 A（8）
IPC大类 B01（8） A61（3） A62（3）
A41（2） B32（2） C01（2）
IPC小类 B01D（8）
IPC B01D046/00（5） B01D039/16（3） A41D013/11（2）
A62B023/02（2） B01D039/20（2） C01B032/194（2）
发明人
公开年 2021（8）
申请年 2021（8）
专利权人

Filter used for cigarette, comprises mouth piece, filtration column comprising graphere ceramic nano-composite material, front plug, back plug, cigarette holding section, and cylindrical pipe to fix cigarette.

SINGHAL A V

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 oxide-based membrane for use in regenerative dialysis system, comprises substrate, and multiple layers of single-layered graphene oxide formed on surface of substrate, where each layer is functionalized by diamine functional group.

YANG H Y, LEONG Z Y, ROY D M, KODURI S

Air purifying device for separating materials from air flow, has collector plates arranged downstream of set of ionization needles, where device generates ionization corona discharge by positive ionization voltage led to needles.

TULKKI J, JUHANI T, SKOGSTER N, MAKKONEN P

Air filtration device for use in air purification system, has high efficiency particulate air (HEPA) filter media that comprises graphene oxide (GO) as antibacterial and antiviral material configured to inactivate trapped micro-organisms.

VOSKRESENSKA V, POLYAKOVA E, STOLYAROV D

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

Multi-layered face mask for being placed over user's mouth and nose, has copper wire trim running along top of mask from end to end, and Bluetooth wireless transmitter embedded within inner and outer layers.

CHILDERS J M, RUBIO R J

Flower-shaped zinc oxide-based composite nano-particle glass fiber filter element comprises zinc oxide-based composite photo catalytic nanoparticles, adhesive system and ultrafine glass fiber cotton.

ZENG H, ZHAI F, HU M, LI L, LUO Y, FENG G