Wei Jin Chao

Person

Guangdong, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Hydraulic door closer capable of reducing oil-pressure therein in h...
- Patent number 12,071,805
- Issue date Aug 27, 2024
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hydraulic door closer capable of reducing oil-pressure therein in h...
- Patent number 11,091,948
- Issue date Aug 17, 2021
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hydraulic door closer capable of reducing oil-pressure therein in h...
- Patent number 11,091,947
- Issue date Aug 17, 2021
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hydraulic door closer capable of reducing oil-pressure therein in h...
- Patent number 10,633,902
- Issue date Apr 28, 2020
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Bracket door closer
- Patent number 9,151,100
- Issue date Oct 6, 2015
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Bracket door closer
- Patent number 9,009,917
- Issue date Apr 21, 2015
- Cmech (Guangzhou), Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...
- Publication number 20240337143
- Publication date Oct 10, 2024
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...
- Publication number 20210372184
- Publication date Dec 2, 2021
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...
- Publication number 20190257128
- Publication date Aug 22, 2019
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...
- Publication number 20190136597
- Publication date May 9, 2019
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...
- Publication number 20170191297
- Publication date Jul 6, 2017
- Cmech (Guangzhou) Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
BRACKET DOOR CLOSER
- Publication number 20150135478
- Publication date May 21, 2015
- Cmech (Guangzhou), Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
BRACKET DOOR CLOSER
- Publication number 20150026922
- Publication date Jan 29, 2015
- Cmech (Guangzhou), Ltd.
- Wei Jin Chao
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Wei Jin Chao

Person

Patents Grantslast 30 patents

Hydraulic door closer capable of reducing oil-pressure therein in h...

Hydraulic door closer capable of reducing oil-pressure therein in h...

Hydraulic door closer capable of reducing oil-pressure therein in h...

Hydraulic door closer capable of reducing oil-pressure therein in h...

Bracket door closer

Bracket door closer

Patents Applicationslast 30 patents

HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...

HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...

HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...

HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...

HYDRAULIC DOOR CLOSER CAPABLE OF REDUCING OIL-PRESSURE THEREIN IN H...

BRACKET DOOR CLOSER

BRACKET DOOR CLOSER