Pengyuan Zhang

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method for treating waste saline water produced in production proce...
- Patent number 9,802,848
- Issue date Oct 31, 2017
- Wanhua Chemical (Ningbo) Co., Ltd.
- Hongke Zhang
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of preparing polymethylene-polyphenyl-polyamine
- Patent number 7,893,301
- Issue date Feb 22, 2011
- Ningbo Wanhua Polyurethanes Co., Ltd.
- Jiansheng Ding
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR TREATING WASTE SALINE WATER PRODUCED IN PRODUCTION PROCE...
- Publication number 20120168375
- Publication date Jul 5, 2012
- Beijing University of Chemical Technology
- Hongke Zhang
- C01 - INORGANIC CHEMISTRY
Information Patent Application
Method of preparing polymethylene-polyphenyl-polyamine
- Publication number 20080249261
- Publication date Oct 9, 2008
- Jiansheng Ding
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...