Patents by Inventor Keith Henry Lawson

Keith Henry Lawson 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).

  • Hydroprocessing methods and apparatus for use in the preparation of liquid hydrocarbons
    Patent number: 7354507
    Abstract: The present invention is generally related towards enhancing the yield and/or cold-flow properties of certain hydrocarbon products, increasing the degree of isomerization in a diesel product and/or increasing the production rate of a diesel product. The embodiments generally include reducing the residence time of lighter hydrocarbon fractions during hydrocracking, thereby decreasing secondary cracking, by various configurations of introducing at least two hydrocarbon feedstreams of different boiling ranges at different entry points in a hydrocracking unit. A method further includes forming a hydrocarbons stream comprising primarily C5+ Fischer-Tropsch hydrocarbon products; fractionating hydrocarbons stream to form at least a wax fraction and an intermediate fraction which serve as separate feedstreams to a hydrocracking unit comprising at least two hydroconversion zones.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: April 8, 2008
    Assignee: ConocoPhillips Company
    Inventors: Sridhar Gopalakrishnan, Vincent H. Melquist, Rafael L. Espinoza, Doug S. Jack, Keith Henry Lawson
  • Hydrocarbon synthesis catalyst and process
    Patent number: 6844370
    Abstract: According to the present invention there is provided a hydrocarbon synthesis catalyst comprising a precipitated iron product and a catalyst promotor. The catalyst has a surface area of below 60 m2 per gram of catalyst in the reduced form or below 100 m2 per gram of catalyst in the non-reduced form. According to the invention there is also provided a process for preparing the catalyst and the use thereof in the synthesis of hydrocarbons.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: January 18, 2005
    Assignee: Sasol Technology (Pty) Ltd.
    Inventors: Rafael Luis Espinoza, Tracy Carolyn Bromfield, Frederick Gideon Botes, Rentia Visagie, Keith Henry Lawson, Philip Gibson
  • Hydrocarbon synthesis catalyst and process
    Publication number: 20030162850
    Abstract: According to the present invention there is provided a hydrocarbon synthesis catalyst comprising a precipitated iron product and a catalyst promotor. The catalyst has a surface area of below 60 m2 per gram of catalyst in the reduced form or below 100 m2 per gram of catalyst in the non-reduced form. According to the invention there is also provided a process for preparing the catalyst and the use thereof in the synthesis of hydrocarbons.
    Type: Application
    Filed: December 12, 2002
    Publication date: August 28, 2003
    Inventors: Rafael Luis Espinoza, Tracy Carolyn Bromfield, Frederick Gideon Botes, Rentia Visagie, Keith Henry Lawson, Philip Gibson
  • Production of MIBK using catalytic distillation technology
    Patent number: 6008416
    Abstract: A process for the production of methyl isobutyl ketone from acetone and hydrogen utilizing a catalytic distillation column reactor. The reactions take place in a reaction zone with the reaction products being removed from the reaction zone and unreacted acetone being refluxed. The equilibrium is thus continuously disturbed allowing for greater than equilibrium conversion of acetone.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: December 28, 1999
    Assignee: Catalytic Distillation Technologies
    Inventors: Keith Henry Lawson, Bongani Nkosi