Patents by Inventor Jay J. Litrap

Jay J. Litrap 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).

  • Gold pan and classifier
    Patent number: 4289241
    Abstract: A gold panning and classifying method and system includes a generally rectangularly shaped gold pan having diverging side panels and a plurality of valleys and ridges in the front panel. A plurality of nesting classifying screens are included to effect a first separation of material into portions composed of equivalent size particles. The unique shape of the pan greatly enhances the gravity separation techniques for separating fine sands from gold and gold dust.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: September 15, 1981
    Inventor: Jay J. Litrap