Patents by Inventor Archie L. Poarch

Archie L. Poarch 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 extraction of copper products from copper bearing material
    Patent number: 4065300
    Abstract: Cuprous oxide and finely divided metallic copper are recovered from copper bearing material by an improved chemical process involving the dissolving of the copper bearing material in a solution of ammonium nitrate having an excess of NO.sub.3.sup..dbd. ions to form a cupric ammonium complex which then collects additional copper ions to form a cuprous ammonium nitrate. The cuprous ammonium nitrate is then broken down chemically to cuprous oxide and finely divided metallic copper.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: December 27, 1977
    Inventor: Archie L. Poarch