国家/地区 中国（2）
IPC部 A（3）
IPC大类 B01（3）
IPC小类 B01D（3）
IPC B01D046/00（2） C02F001/28（2）
发明人
公开年 2021（3）
申请年 2021（3）
专利权人

Deodorant device for intelligent toilet care instrument comprises e.g. dirt barrel, filtering and deodorizing assembly, and circulating deodorizing assembly, outer edge, mounting cover installed above the dirt bucket, middle of fixing plate is connected with outer edge by fixing bolts.

YIN X

Four-columns water filter system has three filtering bed in each column, where three filtering bed comprises filter I or first filter bed-made-up of functionalized graphene, filter II or second filter bed-made-up of cotton supported bed.

GAUTAM S, KUMAR A, VASHISTHA V K, DAS D K, SHARMA K, PRAKASH S

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