Patents by Inventor Walter Greenhouse

Walter Greenhouse 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).

  • Process for forming a continuous web from polyurethane foam pieces
    Patent number: 6623676
    Abstract: A continuous process for reusing scrap polyurethane involves the following stages: Chips of thermoset polyurethane foam are supported as a bed; the bed of chips while moving is heated; the bed of chips while moving is subjected to pressure or compression; and a web is formed. The resulting material is useful in many industrial applications, including padding, gaskets, and insulation.
    Type: Grant
    Filed: July 14, 1999
    Date of Patent: September 23, 2003
    Assignee: Wm. T. Burnett & Co.
    Inventors: Gregory B. Davis, Walter Greenhouse, George Tolen