Weizhang CHEN

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ZHEJIANG, CN

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Patents Grantslast 30 patents

Information Patent Grant
Reactive dye compound and preparation method and application thereof
- Patent number 11,370,921
- Issue date Jun 28, 2022
- SHANGHAI KEHUA DYESTUFF INDUSTRY CO., LTD.
- Huaiqing Gao
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...

Patents Applicationslast 30 patents

Information Patent Application
A REACTIVE DYE COMPOUND AND PREPARATION METHOD AND APPLICATION THEREOF
- Publication number 20200231819
- Publication date Jul 23, 2020
- Zhejiang Keyong Chemical Co., Ltd.
- HUAIQING GAO
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...