Yingwei Song

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Shenyang, CN

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Patents Grantslast 30 patents

Information Patent Grant
Chromate-free conversion film solution and the method of applying t...
- Patent number 8,696,831
- Issue date Apr 15, 2014
- Institute of Metal Research Chinese Academy of Sciences
- Dayong Shan
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Chromate-free Conversion Film Solution and the Method of Applying t...
- Publication number 20110226388
- Publication date Sep 22, 2011
- Dayong SHAN
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...