Jiafen Li

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Copolymer and preparation method and application thereof
- Patent number 8,623,791
- Issue date Jan 7, 2014
- China Petroleum and Chemical Corporation
- Xiaohua Yang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Electropositive production well treating fluid and method of prepar...
- Patent number 7,323,434
- Issue date Jan 29, 2008
- China Petroleum and Chemical Corporation
- Changming Su
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents

Information Patent Application
COPOLYMER AND PREPARATION METHOD AND APPLICATION THEREOF
- Publication number 20120077718
- Publication date Mar 29, 2012
- SINOPEC RESEARCH INSTITUTE OF PETROLEUM ENGINEERING
- Xiaohua YANG
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...