Patents by Inventor Charles T. Shoemaker

Charles T. Shoemaker 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).

  • Non-skid place mat and the like
    Patent number: 4137356
    Abstract: A place mat, coaster or the like possessing exceptional anti-skid characteristics comprises a planar base member, such as paper or plastic sheet, provided on the top and bottom surfaces thereof with a plurality of arrayed, discrete, spaced-apart projections of a high friction material. Such place mats, coasters and the like are produced by imprinting the aforementioned high friction material in the desired pattern or array on the top and bottom surfaces of the base member.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: January 30, 1979
    Assignee: The Hoffmaster Company, Inc.
    Inventors: Charles T. Shoemaker, Joseph P. Engler