Patents by Inventor Kevin L. Hofer

Kevin L. Hofer 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).

  • Fuels hydrocracking and distillate feed hydrofining in a single process
    Patent number: 7427349
    Abstract: The present invention relates to the field of hydroprocessing, and more particularly relates to a process directed to fuels hydrocracking and distillate feed hydrofining. This process has at least two stages. A relatively unconverted hydrofined product may be removed prior to the second stage, providing flexibility. In another embodiment, fresh feed may be added prior to the second stage. In both embodiments, fuels production is maintained at a constant level.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 23, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: Ujjal K. Mukherjee, Kevin L. Hofer, Darush Farshid
  • Process scheme for producing lubricating base oil with low pressure dewaxing and high pressure hydrofinishing
    Patent number: 6337010
    Abstract: A process for the production of a UV stable lubricating base oil from a waxy hydrocarbon feedstock comprising the steps of hydrocracking the feedstock; dewaxing the intermediate feedstock from the hydrocracking zone under low pressure; and stabilizing the dewaxed lubricating base oil under high pressure in a hydrofinishing zone.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: January 8, 2002
    Assignee: Chevron U.S.A. Inc.
    Inventor: Kevin L. Hofer