Chunlei Zheng

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Polyurethane foam and a polyurethane composite comprising the same
- Patent number 10,793,663
- Issue date Oct 6, 2020
- Covestro Deutschland AG
- Wenping Wei
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyurethane composite elements and processes for producing the same
- Patent number 10,280,249
- Issue date May 7, 2019
- Covestro Deutschland AG
- Qiang Xi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
POLYURETHANE FOAM COMPOSITE PANEL
- Publication number 20200362088
- Publication date Nov 19, 2020
- COVESTRO DEUTSCHLAND AG
- Wenping Wei
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
A POLYURETHANE FOAM AND A POLYURETHANE COMPOSITE COMPRISING THE SAME
- Publication number 20190119430
- Publication date Apr 25, 2019
- COVESTRO DEUTSCHLAND AG
- Wenping Wei
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Polymer Material Filled Composite Element and a Process for Prepari...
- Publication number 20170266854
- Publication date Sep 21, 2017
- COVESTRO DEUTSCHLAND AG
- Qiang Xi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
POLYURETHANE COMPOSITE ELEMENTS AND PROCESSES FOR PRODUCING THE SAME
- Publication number 20170073455
- Publication date Mar 16, 2017
- COVESTRO DEUTSCHLAND AG
- Qiang Xi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...