Patents by Inventor R. Larry Howell

R. Larry Howell 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).

  • Sorbent treating of lubricating oils to remove haze precursors
    Patent number: 6468418
    Abstract: A base oil feed having a tendency to form a haze at ambient or sub-ambient temperatures is contacted with a solid adsorbent to remove at least a portion of the haze precursors, thereby reducing the haze-forming tendency of the base oil feed.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: October 22, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Kamala R. Krishna, John M. Rosenbaum, Nadine L. Yenni, R. Larry Howell, Krishnia Parimi
  • Filtering lubricating oils to remove haze precursors
    Patent number: 6468417
    Abstract: A dewaxed oil having a tendency to form a haze at ambient or sub-ambient temperatures is contacted with a solid adsorbent to remove at least a portion of the haze precursors, thereby reducing the haze-forming tendency of the dewaxed oil.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: October 22, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joseph A. Biscardi, Kamala R. Krishna, John M. Rosenbaum, Nadine L. Yenni, R. Larry Howell