Wenhua ZHANG

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Chengdu, CN

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Patents Grantslast 30 patents

Information Patent Grant
Chrome-free tanning process of ecological leather
- Patent number 12,129,524
- Issue date Oct 29, 2024
- Sichuan University
- Yanan Wang
- C14 - SKINS HIDES PELTS LEATHER
Information Patent Grant
Light-colored polycarboxylated polysaccharide tanning agent, and pr...
- Patent number 11,834,724
- Issue date Dec 5, 2023
- Sichuan University
- Yue Yu
- C14 - SKINS HIDES PELTS LEATHER

Patents Applicationslast 30 patents

Information Patent Application
CHROME-FREE TANNING PROCESS OF ECOLOGICAL LEATHER
- Publication number 20240263257
- Publication date Aug 8, 2024
- Sichuan University
- Yanan WANG
- C14 - SKINS HIDES PELTS LEATHER
Information Patent Application
LIGHT-COLORED POLYCARBOXYLATED POLYSACCHARIDE TANNING AGENT, AND PR...
- Publication number 20220251672
- Publication date Aug 11, 2022
- Sichuan University
- Yue YU
- C14 - SKINS HIDES PELTS LEATHER