国家/地区 中国（5）
IPC部 B（5）
IPC大类 B01（5）
IPC小类 B01D（5）
IPC B01D046/12（5）
发明人
公开年 2021（3）
申请年 2020（3） 
专利权人

Fresh air device for processing graphene, has screw thread fixing sleeve passing through rod groove and fixed with outer surface of mounting ring, where inner part of ring is inserted with filter net ring.

SU Q

Device used for purifying oil fume, comprises housing, and filter layer mesh three-layer structure comprising antibacterial and antiviral metal mesh and photocatalytic layer, longitudinally provided in housing.

CHEN G, YU H, LI M

Activated carbon composite filter screen comprises front plate, back plate, frame structure layer and filter core, where four corners of one side of front plate are fixedly provided with mounting sleeve.

YU X, GAO F, ZHANG J

Filter assembly for air-conditioning device, comprises high efficiency and low impedance bacteria filter layer including mildew-proof filter support layer and composite electrostatic cotton filter layer, and rhombic grid filter screen layer.

WANG Q, TIAN X, WU G, ZHAO L, DU G, TIAN J, WU D

Graphene top heater with air purifying device comprises a mechanism and a mounting cover, where the top part of the mechanism is fixedly installed with the mounting cover body by a mounting substrate.

WU K, WU H