Patents by Inventor Gary D. Fritze

Gary D. Fritze 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).

  • Heat- and flame-resistant sheet material
    Patent number: 4372997
    Abstract: Fire- and heat-resistant sheet material comprises fibrous webs adhered together with asphalt which is filled with inorganic particles, intumescable granules, and a catalyst which catalyzes charring of the asphalt.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: February 8, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary D. Fritze, Joseph Graham