Patents by Inventor Thomas G. C. Nelson

Thomas G. C. Nelson 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).

  • Method of enhancing finished catalysts
    Patent number: 5438028
    Abstract: A method of enhancing the activity of a catalyst for the hydroprocessing of hydrocarbons, comprising:(a) applying a modifying element dissolved in a solvent onto the surface of a finished catalyst;(b) drying said modified finished catalyst to remove all free solvent from said catalyst;(c) optionally, heating said dried, modified finished finished catalyst at a temperature of about 120.degree. C. to about 1000.degree. C. at a rate of 1.degree.-20.degree. C. per minute, and holding said dried catalyst at a temperature of about 120.degree. C. to about 1000.degree. C. up to 48 hours to provide an enhanced finished catalyst; and(d) recovering said enhanced finished catalyst.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: August 1, 1995
    Assignee: Texaco Inc.
    Inventors: Jeffrey G. Weissman, Elaine C. DeCanio, Thomas G. C. Nelson, Denise C. Tebbens