Ronald C. Zumstein

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Baton Rouge, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Racemization process for optically active carboxylic acids or salts...
- Patent number 5,847,202
- Issue date Dec 8, 1998
- Albemarle Corporation
- Robert E. Young
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Production of particulate polyimide polymers
- Patent number 4,943,682
- Issue date Jul 24, 1990
- Ethyl Corporation
- W. Dirk Klobucar
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Production of particulate polyimide polymers
- Patent number 4,923,954
- Issue date May 8, 1990
- Ethyl Corporation
- W. Dirk Klobucar
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...