Patents by Inventor Phanoy Waldron

Phanoy Waldron 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).

  • Magnetic jigsaw puzzle
    Patent number: 4258920
    Abstract: A magnetic jigsaw puzzle wherein either the playing board or the play pieces are magnetized and the other is metallic. The method of making magnetized pieces or board comprises mixing iron filings, shredded paper and water with a rust inhibitor in the form of a zinc salt to form a slurry, rolling the slurry, drying the wet mass; printing on the dried sheet; die cutting and packaging.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: March 31, 1981
    Inventors: Don C. Waldron, Phanoy Waldron