Patents by Inventor William J. Piton

William J. Piton 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).

  • Portable sluice pan
    Patent number: 3941690
    Abstract: A portable sluice pan is described for panning for gold and other valuable heavy minerals from placer deposits. The pan includes an elongated trough having a feed hopper at one end and a removable flexible riffle mat in the bottom of the trough to cause the placer pulp to flow in a turbulent manner over the riffles to stratify the heavier and lighter materials. The sluice pan is constructed of light weight material such as aluminum and may be hand held during operation.
    Type: Grant
    Filed: November 29, 1974
    Date of Patent: March 2, 1976
    Assignee: William J. Piton
    Inventors: Michael D. Powers, William J. Piton