Patents by Inventor Rengin K. Usmen

Rengin K. Usmen 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).

  • Thermally stable rhodium/alumina catalysts
    Patent number: 5597772
    Abstract: The invention relates to a method of making a rhodium containing phase of a catalyst system useful to treat the exhaust gases of an internal combustion engine. The method comprises hydrothermally pre-treating the alumina prior to its impregnation with a preferably low loading of rhodium. Preferably the alumina is .alpha.-alumina.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: January 28, 1997
    Assignee: Ford Motor Company
    Inventors: Robert W. McCabe, Rengin K. Usmen, Harendra S. Gandhi
  • Automotive catalysts with improved oxygen storage and metal dispersion
    Patent number: 5556825
    Abstract: This invention is a method for preparing an automotive catalyst system. It comprises the steps of providing a substrate, providing a gamma-alumina support material, depositing a lanthana precursor and calcining the precursor, depositing an oxygen storage material precursor like ceria precursor and calcining this precursor material, and subsequently depositing catalytic material like platinum on the oxygen storage material. The alumina may be initially washcoated on the substrate or at any stage after deposition of the lanthana precursor.
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: September 17, 1996
    Assignee: Ford Motor Company
    Inventors: Mordecai Shelef, Rengin K. Usmen, George W. Graham, William L. H. Watkins, Robert W. McCabe