Patents Represented by Attorney M. D. Marin

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  • Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product
    Patent number: 7344631
    Abstract: Fischer-Tropsch hydrocarbon synthesis using a noncobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by contacting the waxy hydrocarbons, in the presence of hydrogen, with an unsulfided hydrodewaxing catalyst that has been reduced and then treated by contacting it with a stream containing one or more oxygenates.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: March 18, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Adeana Richelle Bishop, William Berlin Genetti, Jack Wayne Johnson, Loren Leon Ansell, Nancy Marie Page