Patents by Inventor Peter A.C.A. Howe

Peter A.C.A. Howe 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).

  • Recovering precious metals and small precious stones from clay suspensions
    Patent number: 5893463
    Abstract: A process for recovering precious metal particles or small precious stones from aqueous clay suspensions containing said precious metal particles or precious stones in suspension with clay particles includes adding a sufficient amount of deflocculating agent to cause deflocculation of the clay particles, and allowing the deflocculated suspension to settle. The settled material containing the precious metal particles or small precious stones is then removed.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: April 13, 1999
    Assignee: Ateba Mines Inc.
    Inventors: David Krofchak, Peter A.C.A. Howe, David M. Howe