Patents by Inventor Akio Iizuka

Akio Iizuka 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 producing catalyst for conversion of carbon monoxide and hydrocarbons in engine exhaust gas
    Patent number: 4138367
    Abstract: A catalyst, which consists essentially of a catalytic metal, or metals, of the platinum group distributed on a carrier of active alumina and exhibits high conversion ability for CO and HC and good durability but exhibits a relatively low activity on the oxidation of SO.sub.2, is produced by impregnating the carrier with an aqueous solution containing, dissolved therein, a complex of a salt of EDTA and the catalytic metal and baking the impregnated carrier in a stream of steam at temperatures between 300 and 700.degree. C.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: February 6, 1979
    Assignee: Nissan Motor Company, Limited
    Inventors: Junichi Mine, Akio Iizuka, Tetsuhiko Yoneshige, Hidefumi Ito
  • Catalyst for conversion of engine exhaust gas
    Patent number: 4120821
    Abstract: A catalyst, which has high and long-lasting activity on both the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides particularly when an internal combustion engine is operated at an air-fuel ratio around a stoichiometric ratio, consists of a carrier of active alumina, 0.05-0.2 Wt% platinum, 0.0015-0.045 Wt% rhodium and 0.002-5 Wt% boron.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: October 17, 1978
    Assignee: Nissan Motor Company, Limited
    Inventors: Akio Iizuka, Michiichi Taguchi, Muneyuki Kubo