Patents by Inventor Cong-Yan Chan

Cong-Yan Chan 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).

  • Manufacture of high octane alkylate
    Patent number: 6768035
    Abstract: A Fischer-Tropsch C3-C4 olefin stream is simultaneously dehydrated and isomerized to convert alcohols to olefins and 1-butenes to 2-butenes and thereby lower the oxygenate content. Another Fischer-Tropsch fraction is hydrotreated and hydrocracked to provide an isobutane stream. The treated C3-C4 olefin stream having an oxygenate content less than 4000 ppm, is reacted with the isobutane stream to provide a highly branched, high octane isoparaffinic alkylate. The alkylate is useful as a blending component in motor gasoline.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: July 27, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis J. O'Rear, Steven S. Mathur, Thomas Van Harris, Curtis L. Munson, Cong-Yan Chan
  • Preparation of high octane alkylate from Fischer-Tropsch olefins
    Patent number: 6743962
    Abstract: A Fischer-Tropsch C3-C4 olefin stream is treated to lower the oxygenate content to below 4000 ppm. Another Fischer-Tropsch fraction is hydrotreated and hydrocracked to provide an isobutane-containing stream. The treated C3-C4 olefin stream is reacted with the isobutane stream in an alkylation reactor to provide a highly branched, high octane isoparaffinic alkylate. The alkylate is useful as a blending component in motor gasoline.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: June 1, 2004
    Assignee: Chevron U.S.A. Inc.
    Inventors: Dennis J. O'Rear, Steven S. Mathur, Thomas Van Harris, Curtis L. Munson, Cong-Yan Chan