Patents by Inventor Rong J. Yang

Rong J. Yang 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).

  • Perpetual cubic calendar
    Patent number: 4472892
    Abstract: A kind of device on the surface of which numbers, illustrations, or colors are arranged to show the year, month, day, or week is disclosed. Also, puzzles can be provided according to the invention for intellectual play purposes. A plurality of wooden pegs having either a cubic, rectangular, or cylindrical shape are provided wherein on each peg, indicia, such as, numbers, colors, illustrations are placed so as to show the year, month, day, week, or graphical illustrations and/or beautiful designs depending upon the arrangement of the pegs.
    Type: Grant
    Filed: November 9, 1982
    Date of Patent: September 25, 1984
    Inventor: Rong J. Yang