Chenglong Yi

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Guangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Cephalosporin compounds comprising a C3 thio-methyl moiety substitu...
- Patent number 7,700,581
- Issue date Apr 20, 2010
- Guangzhou Baiyunshan Pharmaceutical Co., Ltd.
- Mao Chen
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Cephalosporin compounds comprising a C3 thio-methyl moiety substitu...
- Publication number 20080182836
- Publication date Jul 31, 2008
- Mao Chen
- C07 - ORGANIC CHEMISTRY