Patents by Inventor Raj R. Rajaram

Raj R. Rajaram 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).

  • Method of using catalyst containing noble metal and cerium dioxide
    Patent number: 5993762
    Abstract: A reaction comprising the oxidation of carbon monoxide to carbon dioxide, eg in vehicle exhausts, employs a catalyst composed of metal oxide, eg. ceria, particles among which are uniformly incorporated noble metal particles, the particles having such a high interaction that, without hydrogen reduction pre-treatment, the catalyst exhibits the formation of anionic vacancies on the metal oxide surface at a temperature lower than does the corresponding catalyst prepared by impregnation. The catalyst employed is preferably prepared by co-precipitation.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: November 30, 1999
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Raj R. Rajaram, John W. Hayes, Graham P. Ansell, Helen A. Hatcher
  • Catalyst
    Patent number: 5480854
    Abstract: A reaction comprising the oxidation of carbon monoxide to carbon dioxide, eg in vehicle exhausts, employs a catalyst composed of metal oxide, eg ceria, particles among which are uniformly incorporated noble metal particles, the particles having such a high interaction that, without hydrogen reduction pre-treatment, the catalyst exhibits the formation of anionic vacancies on the metal oxide surface at a temperature lower than does the corresponding catalyst prepared by impregnation. The catalyst employed is preferably prepared by co-precipitation.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: January 2, 1996
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Raj R. Rajaram, John W. Hayes, Graham P. Ansell, Helen A. Hatcher