Patents by Inventor Tim T. Chu

Tim T. Chu 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).

  • Two-step hydroprocessing of heavy hydrocarbonaceous oils
    Patent number: 4389301
    Abstract: A heavy hydrocarbonaceous oil feed is hydrogenated in a two-stage process by contacting the oil with hydrogen in the presence of added dispersed hydrogenation catalyst, suspended in the oil, and porous solid contact particles. At least part of the normally liquid product from the first stage is hydrogenated in a second stage catalytic hydrogenation reactor.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: June 21, 1983
    Assignee: Chevron Research Company
    Inventors: Arthur J. Dahlberg, John H. Shinn, Joel W. Rosenthal, Tim T. Chu
  • Hydroprocessing of heavy hydrocarbonaceous oils
    Patent number: 4376037
    Abstract: A heavy hydrocarbonaceous oil feed is hydrogenated in a one or two stage process by contacting the oil with hydrogen in the presence of added dispersed hydrogenation catalyst, suspended in the oil, and porous solid contact particles. In the two stage process, at least part of the normally liquid product from the first stage is hydrogenated in a catalytic hydrogenation reactor.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: March 8, 1983
    Assignee: Chevron Research Company
    Inventors: Arthur J. Dahlberg, John H. Shinn, Joel W. Rosenthal, Tim T. Chu