Patents by Inventor John Hume

John Hume 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).

  • Smoke and toxic gas suppressant system
    Patent number: 4444914
    Abstract: A composition comprising a combustible material, especially a polyurethane, and a smoke and toxic gas (STG) suppressant system, comprising (A) an STG-suppressant with (B) a combustion rate- and/or flame temperature-reducing component, or (C) a char-stabilizer, components (B) and (C) preferably both being present.
    Type: Grant
    Filed: September 9, 1982
    Date of Patent: April 24, 1984
    Inventors: Derek A. Smith, Stephen J. Grayson, John Hume