Patents by Inventor Douglas E. Hansen

Douglas E. Hansen 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).

  • Insulation composition
    Patent number: 4379857
    Abstract: An insulating composition comprising in combination a liquid binder, a heat expanded polystyrene material in bead or granular form and a reinforcing pigment, said liquid binder comprising a 95.5 to 50:50 mixture, by weight of an acrylic or vinyl polymer emulsion and an alkali metal silicate, said expanded polystyrene being present in an amount ranging from 5 to 25 percent by weight of said composition.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: April 12, 1983
    Assignee: Cook Paint and Varnish Company
    Inventors: Douglas E. Hansen, Steven D. Johnson, Richard L. Motko