Richard Lee Wappelhorst

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Port Lavaca, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Purification of acetonitrile by a distillative recovery/ion exchang...
- Patent number 7,491,838
- Issue date Feb 17, 2009
- Ineos USA LLC
- Mark Clark Cesa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Purification and recovery of acetonitrile
- Patent number 6,326,508
- Issue date Dec 4, 2001
- The Standard Oil Company
- Sanjay Purushottam Godbole
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
Purification of acetonitrile by a distillative recovery/ion exchang...
- Publication number 20040176631
- Publication date Sep 9, 2004
- Mark Clark Cesa
- C07 - ORGANIC CHEMISTRY