Wenwen Zhang

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Tianjin, CN

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Patents Grantslast 30 patents

Information Patent Grant
Hydrothermal oxidation method for production of alkali metal dichro...
- Patent number 9,157,133
- Issue date Oct 13, 2015
- TIANJIN PASSION SCIENCE AND TECHNOLOGY CO., LTD.
- Zhu Ji
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
HYDROTHERMAL OXIDATION METHOD FOR PRODUCTION OF ALKALI METAL DICHRO...
- Publication number 20140341791
- Publication date Nov 20, 2014
- TIANJIN PASSION SCIENCE AND TECHNOLOGY CO., LTD.
- Zhu Ji
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...