Patents by Inventor Wayne E Hanson

Wayne E Hanson 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 for making a process oil by using aromatic enrichment and two pass hydrofinishing
    Patent number: 6024864
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a paraffinic rich feed to provide a blended feed. The blended feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to hydrogen sulfide and ammonia. After stripping, the feed is subjected to a second hydrotreating stage to provide a process oil.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 15, 2000
    Assignee: Exxon Research and Engineering Co
    Inventors: Keith Kaluna Aldous, Jacob Ben Angelo, Joseph Philip Boyle, Bruce M. Jarnot, Wayne E. Hanson
  • Process oils and manufacturing process for such using aromatic enrichment and two pass hydrofinishing
    Patent number: 5846405
    Abstract: A method for producing a process oil is provided in which an aromatic extract oil is added to a napthenic rich feed. The combined feed is then hydrotreated in a first hydrotreating stage to convert at least a portion of sulfur and nitrogen in the feed to hydrogen sulfide and ammonia. After stripping the feed is subjected to a second hydrotreating stage to provide a process oil.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: December 8, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Keith Kaluna Aldous, Jacob Ben Angelo, Joseph Philip Boyle, Bruce M. Jarnot, Wayne E Hanson