Patents by Inventor Slater W. Hawes

Slater W. Hawes 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).

  • Monolithic catalytic converter
    Patent number: 5106588
    Abstract: A catalytic converter for use in an automobile exhaust gas system suitable for use with an alcohol-containing fuel is provided. Preferably, the catalytic converter contains a palladium-impregnated ceramic honeycomb monolith disposed upstream of a platinum/rhodium-impregnated ceramic honeycomb monolith relative to the exhaust gas flow, such that the exhaust gas contacts the palladium-impregnated monolith before contacting the platinum/rhodium-impregnated monolith.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: April 21, 1992
    Assignee: General Motors Corporation
    Inventors: Gregory S. Sims, Slater W. Hawes
  • Aging treatment for exhaust gas oxygen sensor
    Patent number: 4253934
    Abstract: In a preferred embodiment of the invention, a method of making a solid electrolyte electrochemical-type exhaust gas oxygen sensor. A platinum exhaust electrode is sputtered onto a zirconia body and the body then heated in nitrogen at 700.degree.-900.degree. C. for at least 30 minutes to reduce rich-to-lean switching time response.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: March 3, 1981
    Assignee: General Motors Corporation
    Inventors: Morris Berg, Slater W. Hawes, Frederick L. Kennard, III, Paul C. Kikuchi