Wei Zheng

Follow

Person

Kingston, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Manufacture of polytrimethylene ether glycol
- Patent number 7,164,046
- Issue date Jan 16, 2007
- E. I. Du Pont de Nemours and Company
- Hari Babu Sunkara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Process for manufacture of polytrimethylene ether glycol
- Patent number 7,161,045
- Issue date Jan 9, 2007
- E. I. Du Pont de Nemours and Company
- Hari Babu Sunkara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Manufacture of polytrimethylene ether glycol
- Patent number 7,157,607
- Issue date Jan 2, 2007
- E. I. Du Pont de Nemours and Company
- Hari Babu Sunkara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...