Patents by Inventor Leo Ottrok

Leo Ottrok 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).

  • Method for recovering gold, platinum or silver from an ore containing gold dust, platinum dust or silver dust
    Patent number: 4671868
    Abstract: A method of recovering gold from an ore containing micron gold or gold dust is disclosed. The gold is recovered by providing a silver coated surface, coating the silver coated surface with mercury, washing a mixture of ore and water over the mercury such that an amalgam of gold and mercury is created on the silver coated surface, removing the amalgam from the silver coated surface, and heating the amalgam. The same method may be used to recover platinum from an ore containing micron platinum or platinum dust and also to recover silver from an ore containing micron silver or silver dust.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: June 9, 1987
    Inventor: Leo Ottrok