Patents by Inventor David John McNamara

David John McNamara 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).

  • Catalyst and hydrotreating process
    Patent number: 5910241
    Abstract: Catalyst comprising a porous inorganic refractory oxide wherein the catalyst has:(a) a total pore volume in the range of from 0.2 to 0.5 ml/g,(b) a macroporosity of at least 0.1 ml/g,(c) a microporosity of at least 0.05 ml/g, and(d) a surface area of at least 5 m.sup.2 /g.Process for reducing the amount of solid contaminants and the amount or dissolved metallic contaminants, wherein a hydrocarbon oil containing such contaminants is contacted with hydrogen under hydrotreating conditions in the presence of the above catalyst.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: June 8, 1999
    Assignee: Shell Oil Company
    Inventors: David John McNamara, Willem Hartman Jurriaan Stork
  • Catalyst and hydrotreating process
    Patent number: 5817594
    Abstract: Catalyst comprising a porous inorganic refractory oxide wherein the catalyst has:(a) a total pore volume in the range of from 0.2 to 0.5 ml/g,(b) a macroporosity of at least 0.1 ml/g,(c) a microporosity of at least 0.05 ml/g, and(d) a surface area of at least 5 m.sup.2 /g.Process for reducing the amount of solid contaminants and the amount or dissolved metallic contaminants, wherein a hydrocarbon oil containing such contaminants is contacted with hydrogen under hydrotreating conditions in the presence of the above catalyst.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: October 6, 1998
    Assignee: Shell Oil Company
    Inventors: David John McNamara, Willem Hartmann Jurriaan Stork