Liqiang Li

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Flexible foams
- Patent number 11,332,570
- Issue date May 17, 2022
- Covestro Deutschland AG
- Dong Bo Zhao
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Viscoelastic and reticulated polyurethane foam and the preparation...
- Patent number 10,975,212
- Issue date Apr 13, 2021
- Covestro Deutschland AG
- Liqiang Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PREPARING A RIGID POLYURETHANE FOAM
- Publication number 20210380752
- Publication date Dec 9, 2021
- COVESTRO DEUTSCHLAND AG
- Wenping Wei
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
RIGID POLYURETHANE FOAMS
- Publication number 20210284817
- Publication date Sep 16, 2021
- Covestro Intellectual Property GmbH & Co. KG
- Yefen Wei
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
FLEXIBLE FOAMS
- Publication number 20190352445
- Publication date Nov 21, 2019
- COVESTRO DEUTSCHLAND AG
- Dong Bo Zhao
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLYURETHANE FOAMS COMPRISING A MIXTURE OBTAINED IN THE PRODUCTION...
- Publication number 20190153184
- Publication date May 23, 2019
- COVESTRO DEUTSCHLAND AG
- Sven MEYER-AHRENS
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
VISCOELASTIC AND RETICULATED POLYURETHANE FOAM AND THE PREPARATION...
- Publication number 20180155516
- Publication date Jun 7, 2018
- COVESTRO DEUTSCHLAND AG
- Liqiang Li
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...