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).

  • Process for recovering mineral particles, metal particles or small precious stones from an aqueous slim associated with an ore body or mineral deposit or processing thereof
    Patent number: 6026965
    Abstract: A process for recovering mineral particles, metal particles or small precious stones from an aqueous slime associated with an ore body or mineral deposit or processing thereof, said aqueous slime containing mineral particles, metal particles or small precious stones in suspension with slime particles. The process includes adding a sufficient amount of deflocculating agent to the aqueous slime to cause deflocculation of the slime particles and produce a deflocculated suspension containing the mineral particles, metal particles or small precious stones. The deflocculated suspension is allowed to settle, and the settled material containing the mineral particles, metal particles or small precious stones is recovered.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: February 22, 2000
    Assignee: Ateba Mines Inc.
    Inventors: Roberto Berardi, David Krofchak, Peter A. C. A. Howe, David M. Howe
  • 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