Research Institute of Beijing Yanshan Petrochemical Co., Ltd.

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Star-block interpolymers and preparation of the same
- Patent number 6,462,137
- Issue date Oct 8, 2002
- China Petroleum and Chemical Corporation
- Yang Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Butadiene/isoprene/monovinyl aromatic monomer heptablock copolymers...
- Patent number 6,372,853
- Issue date Apr 16, 2002
- China Petrochemical Corporation
- Yang Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...