Patents by Inventor Grover L. Johnson

Grover L. Johnson 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).

  • Water borne polymer foamable composition
    Patent number: 4692473
    Abstract: A foam polyvinyl product prepared from a composition comprising a vinyl polymer and an alkali carbonate foaming agent.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: September 8, 1987
    Assignee: Orin Chemical Company
    Inventors: Thomas C. Wright, Grover L. Johnson
  • Coated particles and process of preparing same
    Patent number: 4218507
    Abstract: Novel powders, and resinous compositions bearing said powders, characterized by excellent chemical stability, electrical conductivity, and energy-absorbing characteristics. These three characteristics can be utilized, alone or combination, in forming many novel articles including microwave shielding apparatus, magnetic recording media, explosives, and the like articles. The more advantageous powders are characterized by a very thin coating of an electrically conductive metal carbide, metal silicide, or metal boride upon the surface thereof, and a metal core.
    Type: Grant
    Filed: September 8, 1978
    Date of Patent: August 19, 1980
    Assignee: Graham Magnetics, Inc.
    Inventors: Robert J. Deffeyes, Grover L. Johnson
  • Powder products
    Patent number: 4137361
    Abstract: Novel powders, and resinous compositions bearing said powders, characterized by excellent chemical stability, electrical conductivity, and energy-absorbing characteristics. These three characteristics can be utilized, alone or combination, in forming many novel articles including microwave shielding apparatus, magnetic recording media, explosives, and the like articles. The more advantageous powders are characterized by a very thin coating of an electrically conductive metal carbide, metal silicide, or metal boride upon the surface thereof, and a metal core.
    Type: Grant
    Filed: March 30, 1977
    Date of Patent: January 30, 1979
    Assignee: Graham Magnetics Incorporated
    Inventors: Robert J. Deffeyes, Grover L. Johnson