David V. Porchey

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Ponca City, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Predominantly aliphatic lower hydrocarbon materials from carbonaceo...
- Patent number 4,120,881
- Issue date Oct 17, 1978
- Continental Oil Company
- Charles M. Starks
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Removal of vinyl halide from polyvinyl halide
- Patent number 4,107,421
- Issue date Aug 15, 1978
- Continental Oil Company
- John F. Scamehorn
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Calcining method for alumina
- Patent number 3,979,504
- Issue date Sep 7, 1976
- Continental Oil Company
- William C. Ziegenhain
- C01 - INORGANIC CHEMISTRY