Patents by Inventor Walter L. Burdorf

Walter L. Burdorf 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).

  • Anti-static mats and carpets
    Patent number: 4269881
    Abstract: A novel carpet material or mat which is characterized by an extraordinary ability to quickly and comfortably discharge any build-up of a static electricity charge on a person who has built up such a charge, say, by walking across conventional carpeting. The novel material is constructed with a backing which has a low dissipation factor and relatively low volume and surface conductivity, with a conductive thread in the pile and with an electroconductive tufting substrate sheet.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: May 26, 1981
    Assignee: Ludlow Corporation
    Inventors: Donald C. Johnson, Walter L. Burdorf