Weifei LI

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Ionic aqueous epoxy curing agent, preparation method therefor and u...
- Patent number 11,597,796
- Issue date Mar 7, 2023
- WANHUA CHEMICAL GROUP CO., LTD
- Xiao Wang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
PREPARATION METHOD FOR EMULSIFIER, EMULSIFIER, AQUEOUS EPOXY RESIN...
- Publication number 20220055000
- Publication date Feb 24, 2022
- WANHUA CHEMICAL GROUP CO., LTD.
- Xueshun Ji
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
IONIC AQUEOUS EPOXY CURING AGENT, PREPARATION METHOD THEREFOR AND U...
- Publication number 20220033569
- Publication date Feb 3, 2022
- WANHUA CHEMICAL GROUP CO., LTD.
- Xiao WANG
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...