Patents by Inventor David S. Heller

David S. Heller 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).

  • Froth coating of paper products and process for forming same
    Patent number: 4279964
    Abstract: A froth coated paper substrate in which the froth coating may be densified by compression when applied as a frothed resinous emulsion to improve opacity and ink-holdout of the substrate, or applied as a frothed surface size when the coating is a frothed admixture of a resin emulsion and a starch solution, or a frothed starch solution.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: July 21, 1981
    Assignee: Reichhold Chemicals, Incorporated
    Inventor: David S. Heller
  • Fishing reel
    Patent number: D638092
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 17, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: David S. Heller, Robert P. Hauck