Yuzhang Liu

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Beijing, CN

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Patents Grantslast 30 patents

Information Patent Grant
Dendritic comb-shaped polymer thickening agent, preparaton of the s...
- Patent number 8,822,389
- Issue date Sep 2, 2014
- PetroChina Company Limited
- Jianhui Luo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Flexible polymer, particles prepared therefrom and process for prep...
- Patent number 7,867,952
- Issue date Jan 11, 2011
- PetroChina Company Limited
- Pingmei Wang
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Braided comb-shaped salt-resistant polymer thickening agent
- Patent number 7,304,116
- Issue date Dec 4, 2007
- PetroChina Company Limited
- Shiyi Yuan
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
DENDRITIC COMB-SHAPED POLYMER THICKENING AGENT, PREPARATON OF THE S...
- Publication number 20130090269
- Publication date Apr 11, 2013
- Petrochina Company Limited
- Jianhui Luo
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Flexible polymer, particles prepared therefrom and process for prep...
- Publication number 20080139413
- Publication date Jun 12, 2008
- Petrochina Company Limited
- Pingmei Wang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Braided comb-shaped salt-resistant polymer thickening agent
- Publication number 20060287456
- Publication date Dec 21, 2006
- Petrochina Company Limited
- Shiyi Yuan
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...