Yancheng ZHANG

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Aqueous dispersion comprising polyurethane or polyurethane-urea, pr...
- Patent number 12,227,610
- Issue date Feb 18, 2025
- WANHUA CHEMICAL GROUP CO., LTD
- Zefeng Song
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
HYDROPHILICALLY MODIFIED POLYISOCYANATE, AND PREPARATION METHOD THE...
- Publication number 20250154312
- Publication date May 15, 2025
- WANHUA CHEMICAL GROUP CO., LTD.
- Xundi YIN
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
AQUEOUS DISPERSION COMPRISING POLYURETHANE OR POLYURETHANE-UREA, PR...
- Publication number 20220363804
- Publication date Nov 17, 2022
- WANHUA CHEMICAL GROUP CO., LTD.
- Zefeng SONG
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...