国家/地区 中国（10） 韩国（6） 美国（6） 世界知识产权组织（6） 欧洲专利局（EPO）（4） 加拿大（2）
IPC部 B（20）
IPC大类 B01（20） A62（8） A41（6）
B32（5） C08（3） D04（3）
C02（2） D06（2）
IPC小类 B01D（20）
IPC B01D039/16（20）
发明人 CESAREO G G（2） RIZZI L G（2） WU J（2）
公开年 2021（20）
申请年 2021（11）  2020（9） 
专利权人 DIRECTA PLUS.（2）

Filter for use in mask and air purifier, comprises a filter medium forming pores, and a conductive material attached along a surface of the filter medium.

KO S H, SEONGGEUN H, KIM J M

Air filtering grid for vehicle for military and civilian application, has filter core provided with multiple continuous V-shaped filter core units that are provided with filter sheet, and graphene melt-blown cloth coated on outer surface of filter sheet.

LIANG X

Graphene polymer filter comprises polyolefin resin and graphene powder which are mixed to have pores of certain size and porosity.

NAMKUNG D

Graphene composite antibacterial purification material used for particulate matter, comprises graphene, lignin, coconut shell activated carbon, nano-titanium dioxide, methyl cellulose, talc powder and deionized water.

WU J, LI T, CHEN L, QUE M, SUN Y, SUN J

Textile article, useful in a filter for personal health protection, comprises a textile substrate having specific bacterial filtration efficiency, where the textile article comprises graphene dispersed in a polymeric binder.

CESAREO G G, RIZZI L G

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

Multi-layered mask is useful for e.g. protecting against the aerosol transmission of COVID-19 comprises five layers characterized that first and last layers are made of e.g. cotton textile layers, natural fiber layers, and nanofibers layer.

SHIREESHA G, KARBARI S R, UTTARA K M, SUBRAMANYA K

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

Active air filter device for disrupting or destroying bacteria and/or viruses, comprises layer of porous conductive material, and energy source for creating current, voltage, electric field, or magnetic field propagated throughout material.

BENSHABAT K, OSTFELD I