Patents by Inventor Steve C. LeViness

Steve C. LeViness has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Liquefaction process
    Patent number: 5338441
    Abstract: The present invention relates to a catalytic process for converting a solid carbonaceous material, such as coal, to a liquid product in the presence of hydrogen. More particularly, this invention relates to a coal liquefaction process wherein a mixture of coal, bottoms, solvent and a sulfiding agent is subjected to liquefaction conditions in the presence of a catalyst precursor. This catalyst or catalyst precursor is comprised of a thermally decomposable compound of Groups IIB, IVB, VB, VIB, VIIB, and VIII of the Periodic Table of the Elements such as molybdenum.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: August 16, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Steve C. LeViness, Steve J. Hsia, Michael Y. Wen, Stephen M. Davis, Claude C. Culross, Peter S. Maa