Patents by Inventor Harold Trimble

Harold Trimble 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).

  • Presulfiding OCR catalyst replacement batches
    Publication number: 20050006283
    Abstract: Catalyst particles are presulfided in a pretreatment zone separate from a hydroconversion reaction zone. The presulfided catalyst is then added to a moving bed of catalyst in the hydroconversion reaction zone at reaction pressure, so that the reactor is not shut down to replace catalyst. The presulfiding process is particularly beneficial for use in moving bed reactors for heavy oil conversion.
    Type: Application
    Filed: May 6, 2004
    Publication date: January 13, 2005
    Inventors: Pak Leung, David Earls, Bruce Reynolds, David Johnson, Robert Bachtel, Harold Trimble
  • Solid addition and withdrawal
    Patent number: 5021147
    Abstract: A system for adding and withdrawing solids to a high pressure reactor wherein there is provided improved control of flow and concentrations of a slurry of solids in a transport oil for introducing and withdrawing solids from the reactor. In addition, there is provided for improved heating and cooling of the solids.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: June 4, 1991
    Assignee: Abb Lummus Crest, Inc.
    Inventors: Roger P. Van Driesen, William R. Adams, Mario Baldasarri, John Caspers, Harold Trimble
  • Solid addition and withdrawal
    Patent number: 4875995
    Abstract: A system for adding and withdrawing solids to a high pressure reactor wherein there is provided improved control of flow and concentrations of a slurry of solids in a transport oil for introducing and withdrawing solids from the reactor. In addition, there is provided for improved heating and cooling of the solids.
    Type: Grant
    Filed: February 8, 1988
    Date of Patent: October 24, 1989
    Assignee: Lummus Crest, Inc.
    Inventors: Roger P. Van Driesen, William R. Adams, Mario Baldasarri, John Caspers, Harold Trimble
  • Solid addition and withdrawal
    Patent number: 4744887
    Abstract: A system for adding and withdrawing solids to a high pressure reactor wherein there is provided improved control of flow and concentrations of a slurry of solids in a transport oil for introducing and withdrawing solids from the reactor. In addition, there is provided for improved heating and cooling of the solids.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: May 17, 1988
    Assignee: Lummus Crest Inc.
    Inventors: Roger P. Van Driesen, William R. Adams, Mario Baldasarri, John Caspers, Harold Trimble
  • Control of bed expansion in expanded bed reactor
    Patent number: 4684456
    Abstract: In an expanded bed reactor, the expansion of the bed is automatically controlled by automatically changing the rate of speed of a recycle pump for the reactor. The bed is preferably provided with both high and low level bed detectors, and a further detector for determining abnormally high levels.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: August 4, 1987
    Assignee: Lummus Crest Inc.
    Inventors: Roger P. Van Driesen, William R. Adams, John Caspers, Mario Baldasarri, Harold Trimble