WOYUAN LI

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SHANGYU, ZHEJIANG PROVINCE, CN

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Patents Grantslast 30 patents

Information Patent Grant
Preparation method of polyphenylene sulfide resin, and polyphenylen...
- Patent number 11,440,996
- Issue date Sep 13, 2022
- ZHEJIANG NHU CO., LTD.
- Woyuan Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Preparation method for 4-phenylthio-benzenethiol
- Patent number 11,220,478
- Issue date Jan 11, 2022
- ZHEJIANG NHU COMPANY LTD.
- Zhirong Chen
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Fiber grade polyphenylene sulfide resin synthesis method
- Patent number 9,567,440
- Issue date Feb 14, 2017
- ZHEJIANG NHU SPECIAL MATERIALS CO., LTD.
- Zhirong Chen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
High Molecular Weight Polyphenylene Sulfide Resin, Preparation Meth...
- Publication number 20230019023
- Publication date Jan 19, 2023
- ZHEJIANG NHU CO., LTD.
- Zhirong CHEN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
High Molecular Weight Polyphenylene Sulfide Resin, Preparation Meth...
- Publication number 20210047471
- Publication date Feb 18, 2021
- ZHEJIANG NHU CO., LTD.
- Zhirong CHEN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
PREPARATION METHOD FOR 4-PHENYLTHIO-BENZENETHIOL
- Publication number 20210009514
- Publication date Jan 14, 2021
- ZHEJIANG NHU COMPANY LTD.
- Zhirong CHEN
- C07 - ORGANIC CHEMISTRY
Information Patent Application
PREPARATION METHOD OF POLYPHENYLENE SULFIDE RESIN, AND POLYPHENYLEN...
- Publication number 20200347186
- Publication date Nov 5, 2020
- ZHEJIANG NHU COMPANY LTD.
- Woyuan LI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
A FIBER-GRADE POLYPHENYLENE SULFIDE RESIN SYNTHESIS METHOD
- Publication number 20150344632
- Publication date Dec 3, 2015
- ZHEJIANG NGU SPECIAL MATERIALS CO., LTD.
- ZHIRONG CHEN
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...