Patents by Inventor Lawrence P. Zestar

Lawrence P. Zestar 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).

  • PROCESS AND REACTOR FOR UPGRADING HEAVY HYDROCARBON OILS
    Publication number: 20080099378
    Abstract: A process using supercritical water to upgrade a heavy hydrocarbon feedstock into an upgraded hydrocarbon product or syncrude with highly desirable properties (low sulfur content, low metals content, lower density (higher API) lower viscosity, lower residuum content, etc.) is described. The process does not require external supply of hydrogen nor does it use externally supplied catalysts.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Zunqing He, Lin Li, Lixiong Li, Lawrence P. Zestar, Daniel Chinn
  • REACTOR AND PROCESS FOR UPGRADING HEAVY HYDROCARBON OILS
    Publication number: 20080099374
    Abstract: A reactor for conducting a process using supercritical water to upgrade a heavy hydrocarbon feedstock into an upgraded hydrocarbon product or syncrude with highly desirable properties (low sulfur content, low metals content, lower density (higher API), lower viscosity, lower residuum content, etc.) is described. The reactor is operable under continuous) semi-continuous or batch mode and is equipped with means to enable momentum, heat and mass transfer in and out of and within the reactor.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Zunqing He, Lin Li, Lixiong Li, Lawrence P. Zestar, Daniel Chinn
  • Process for generating superheated steam using retorted solids
    Patent number: 4495058
    Abstract: Superheated steam generated by passing wet steam through a superheater containing a fluidized or partially fluidized bed of hot particulate solids recovered from a retorting process especially useful in a process for recovering hydrocarbon vapors from a hydrocarbonaceous solid such as oil shale.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: January 22, 1985
    Assignee: Chevron Research Company
    Inventors: Robert A. Farnham, Lawrence P. Zestar, Corey A. Bertelsen