Patents by Inventor John T. Slade

John T. Slade 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).

  • Patent number: 4156528
    Abstract: Apparatus for indicating color by the sense of touch, which said apparatus is in the form of a game comprising a playing board with playing holes in it and at least two sets of playing pieces, the playing pieces in each said set each having a different shape, and each different shape representing a different color whereby blind, color blind and partially sighted persons can play said game with sighted persons and because said blind, color blind and partially sighted persons can determine color by feeling the shape of the playing pieces they can refer to the color of the playing pieces and are thus not placed at a psychological disadvantage to said sighted persons who play said game by referring to the color of said playing pieces.
    Type: Grant
    Filed: March 2, 1977
    Date of Patent: May 29, 1979
    Inventor: John T. Slade