Yisheng Feng

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Chengkou Town, Wudi County, Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method of preparing wet process phosphoric acid
- Patent number 7,172,742
- Issue date Feb 6, 2007
- Shandong Lubei Enterprise Group Company
- Yisheng Feng
- C01 - INORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Method of decomposing gypsum to sulfur dioxide and the apparatus th...
- Publication number 20050100503
- Publication date May 12, 2005
- Yisheng Feng
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Method of preparing wet process phosphoric acid
- Publication number 20040047790
- Publication date Mar 11, 2004
- Yisheng Feng
- C01 - INORGANIC CHEMISTRY