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Patents Grantslast 30 patents

Information Patent Grant
Imidazole derivative, material and organic light-emitting device co...
- Patent number 11,462,694
- Issue date Oct 4, 2022
- SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
- Jianhua Cao
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Metal complex organic electroluminescent material and organic elect...
- Patent number 11,424,418
- Issue date Aug 23, 2022
- SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
- Jianhua Cao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for preparing a series of carbazole derivatives and use ther...
- Patent number 10,577,325
- Issue date Mar 3, 2020
- SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD
- Jianhua Cao
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
ORGANIC ELECTROLUMINESCENT MATERIAL AND ORGANIC ELECTROLUMINESCENT...
- Publication number 20200381633
- Publication date Dec 3, 2020
- Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
- Jianhua CAO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
IMIDAZOLE DERIVATIVE, MATERIAL AND ORGANIC LIGHT-EMITTING DEVICE CO...
- Publication number 20200144516
- Publication date May 7, 2020
- SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.
- Jianhua CAO
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PREPARING A SERIES OF CARBAZOLE DERIVATIVES AND USE THER...
- Publication number 20180282277
- Publication date Oct 4, 2018
- SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO.,LTD.
- Jianhua CAO
- H01 - BASIC ELECTRIC ELEMENTS