Patents by Inventor Michael J. Lunkas

Michael J. Lunkas 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).

  • Catalytic converter substrate and assembly
    Patent number: 5051294
    Abstract: A substrate for a catalytic converter is formed of steel sheets embossed with corrugations in a chevron pattern such that the metal buckles at vertices of adjoining corrugations to form projections extending out of the plane of the sheet. The sheets are stacked with the projections registered to form weld points and capacitive discharge welding secures the sheets together. The substrate is formed in two halves which are clamped together and then secured by end rings.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: September 24, 1991
    Assignee: General Motors Corporation
    Inventors: Michael J. Lunkas, Matthew W. Spilker