Dennis W. Keppers

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Findlay, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of making an asphalt composition containing ester bottoms
- Patent number RE49447
- Issue date Mar 7, 2023
- Marathon Petroleum Company LP
- Stormy Brewster
Information Patent Grant
Method of making an asphalt composition containing ester bottoms
- Patent number 10,323,148
- Issue date Jun 18, 2019
- Marathon Petroleum Company LP
- Stormy Brewster
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Asphalt composition containing ester bottoms
- Patent number 10,323,147
- Issue date Jun 18, 2019
- Marathon Petroleum Company LP
- Stormy Brewster
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Method and apparatus for recovery and recycling of hydrogen
- Patent number 7,988,753
- Issue date Aug 2, 2011
- Marathon Petroleum Co. LP
- Edward P. Fox
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for recovery and recycling of hydrogen
- Patent number 7,637,970
- Issue date Dec 29, 2009
- Marathon Ashland Petroleum LLC
- Edward P. Fox
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Integrating An Atmospheric Fractionator With A Diluent Recovery Uni...
- Publication number 20140008268
- Publication date Jan 9, 2014
- MARATHON PETROLEUM COMPANY LP
- Dennis W. Keppers
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Conversion of a light sweet refinery to a heavy sour refinery
- Publication number 20100206773
- Publication date Aug 19, 2010
- Marathon Petroleum Company LLC
- Calvin T. Case
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Process for the fractionation of diluted bitumen for use in light s...
- Publication number 20100206772
- Publication date Aug 19, 2010
- Marathon Petroleum Company LLC
- Dennis W. Keppers
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...