Patents by Inventor John G. Hanson

John G. Hanson 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).

  • Asbestos-free vinyl floor tile composition and method for its manufacture
    Patent number: 4260534
    Abstract: An asbestos free composition suitable for the manufacture of vinyl floor tile comprises a substantially uniform mixture of a minor portion of vinyl polymer resin and a major portion of mineral filler consisting essentially of calcium carbonate and Kaolin clay. Formulations using such a mineral filler have been found processible into floor tile using the same basic production equipment and process line used in the manufacture of vinyl asbestos tile.
    Type: Grant
    Filed: February 8, 1979
    Date of Patent: April 7, 1981
    Assignee: American Biltrite, Inc.
    Inventors: John G. Hanson, Merrill M. Smith