Richard J. Sonnenfeld

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Bartlesville, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydrocarbon fuels with carburetor detergent properties
- Patent number RE32533
- Issue date Oct 27, 1987
- Phillips Petroleum Company
- William J. Trepka
- 044 - Fuel and related compositions
Information Patent Grant
Continuous solution polymerization process
- Patent number 4,311,803
- Issue date Jan 19, 1982
- Phillips Petroleum Company
- Richard L. Smith
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Hydrocarbon fuels with carburetor detergent properties
- Patent number 4,238,202
- Issue date Dec 9, 1980
- Phillips Petroleum Company
- William J. Trepka
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...