Wally L. Chang

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Naperville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Polyurethane synthesis from functional group terminated polymers co...
- Patent number 6,166,165
- Issue date Dec 26, 2000
- Witco Corporation
- Wally L. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Functional group terminated polymers containing sulfonate group via...
- Patent number 5,753,774
- Issue date May 19, 1998
- Witco Corporation
- Wally L. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Functional group terminated polymers containing sulfonate group via...
- Patent number 5,698,626
- Issue date Dec 16, 1997
- Witco Corporation
- Wally L. Chang
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...