Wenbin LI

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for preparing isophorone diisocyanate
- Patent number 11,939,280
- Issue date Mar 26, 2024
- WANHUA CHEMICAL GROUP CO., LTD
- Yong Yu
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for preparing isocyanate in gaseous phase
- Patent number 11,814,339
- Issue date Nov 14, 2023
- WANHUA CHEMICAL GROUP CO., LTD
- Weiqi Hua
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
POLYISOCYANATE COMPOSITION, PREPARATION METHOD THEREFOR AND APPLICA...
- Publication number 20230374194
- Publication date Nov 23, 2023
- WANHUA CHEMICAL GROUP CO., LTD.
- Yong YU
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
1,3-BISISOCYANATOMETHYLCYCLOHEXANE COMPOSITION AND OPTICAL RESIN PR...
- Publication number 20220402865
- Publication date Dec 22, 2022
- WANHUA CHEMICAL GROUP CO., LTD.
- Fulin ZHU
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
METHOD FOR PREPARING ISOCYANATE IN GASEOUS PHASE
- Publication number 20220024863
- Publication date Jan 27, 2022
- WANHUA CHEMICAL GROUP CO., LTD.
- Weiqi HUA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
METHOD FOR PREPARING ISOPHORONE DIISOCYANATE
- Publication number 20220002235
- Publication date Jan 6, 2022
- WANHUA CHEMICAL GROUP CO., LTD.
- Yong YU
- C07 - ORGANIC CHEMISTRY