Patents by Inventor Theodore M. Classen

Theodore M. Classen 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).

  • Apparatus for hydrogenating hydrocarbons
    Patent number: 5133941
    Abstract: An improved process and apparatus for hydrogenating a stream of hydrocarbons is provided. The pressure and temperature of the stream are elevated and the stream is passed through two or more serially connected hydrogenation reaction zones. While passing through the reaction zones hydrogen is dispersed in the stream and the stream is caused to flow along successive downward and upward paths. The reacted stream is cooled prior to reducing the pressure exerted thereon.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: July 28, 1992
    Assignee: Phillips Petroleum Company
    Inventors: George E. Hays, Theodore M. Classen
  • Process and apparatus for hydrogenating hydrocarbons
    Patent number: 4995961
    Abstract: An improved process and apparatus for hydrogenating a stream of hydrocarbons is provided. The pressure and temperature of the stream are elevated and the stream is passed through two or more serially connected hydrogenation reaction zones. While passing through the reaction zones hydrogen is dispersed in the stream and the stream is caused to flow along successive downward and upward paths. The reacted stream is cooled prior to reducing the pressure exerted thereon.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: February 26, 1991
    Assignee: Phillips Petroleum Company
    Inventors: George E. Hays, Theodore M. Classen
  • Oil recovery
    Patent number: 4521293
    Abstract: A process for upgrading carbonaceous materials having low carbon content comprising preheating the carbonaceous material to a temperature above about 200.degree. C. in the absence of a solvent, extracting the heated carbonaceous material under moderate temperature and pressure conditions, and hydrotreating the extract under supercritical solvent conditions.
    Type: Grant
    Filed: June 7, 1984
    Date of Patent: June 4, 1985
    Inventors: James Scinta, Theodore M. Classen