Qinfang Zhao

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Catalyst component for ethylene polymerization, a process for prepa...
- Patent number 7,172,988
- Issue date Feb 6, 2007
- China Petroleum & Chemical Corporation
- Kejing Gao
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Silica gel-supported catalyst component for ethylene (co)polymeriza...
- Patent number 6,642,325
- Issue date Nov 4, 2003
- China Petroleum and Chemical Corporation
- Hekuan Luo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Supported catalyst for ethylene (co)polymerization, preparation and...
- Patent number 6,538,078
- Issue date Mar 25, 2003
- China Petro-Chemical Corporation
- Hekuan Luo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
Catalyst component for ethylene polymerization, a process for prepa...
- Publication number 20040127349
- Publication date Jul 1, 2004
- CHINA PETROLEUM & CHEMICAL CORPORATION
- Kejing Gao
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Supported catalyst for ethylene (co)polymerization, preparation and...
- Publication number 20020120078
- Publication date Aug 29, 2002
- Hekuan Luo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Silica gel-supported catalyst component for ethylene (co)polymeriza...
- Publication number 20020065378
- Publication date May 30, 2002
- CHINA PETROLEUM & CHEMICAL CORPORATION AND BEIJING RESEARCH INSTITUTE OF CHEM...
- Hekuan Luo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...