Patents Represented by Attorney Tim J. Hadlock

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  • Method for making a heavy wax composition
    Patent number: 6143940
    Abstract: The invention includes a process of making a wax composition including: a process for making a heavy wax composition including the steps of (1) contacting a waste plastics feed containing primarily polyethylene in a pyrolysis zone at sub-atmospheric pressure, whereby at least a portion of the waste plastics feed is cracked, thereby forming a pyrolysis zone effluent including 1-olefins and n-paraffins; and (2) passing the pyrolysis zone effluent to a hydrotreating zone, for contacting with a hydrotreating catalyst at catalytic conditions.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 7, 2000
    Assignees: Chevron U.S.A. Inc., University of Kentucky Research Foundation
    Inventors: Stephen J. Miller, Gerald P. Huffman, Naresh Shah