Chengzhang Li

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Polyimide material and preparation method thereof
- Patent number 7,858,734
- Issue date Dec 28, 2010
- BYD Co., Ltd.
- Qiang Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
POLYIMIDE MATERIAL AND PREPARATION METHOD THEREOF
- Publication number 20090143521
- Publication date Jun 4, 2009
- Qiang Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...