Patents by Inventor Richard O. Huch

Richard O. Huch 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 achieving enhanced copper-containing mineral concentrate grade by oxidation and flotation
    Patent number: 5295585
    Abstract: The present invention involves a method for separating a first copper-containing mineral from a second copper-containing mineral using froth flotation where one of the minerals has a more readily oxidizable surface than the other. Prior to flotation, a slurry containing the copper-containing minerals is oxidized and conditioned to achieve an effective pH. Thereafter, the slurry is subjected to a froth flotation process by which a first copper-containing mineral, such as chalcocite, and a second copper-containing mineral, such as enargite, are recovered.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: March 22, 1994
    Assignee: Cyprus Mineral Company
    Inventor: Richard O. Huch
  • Method for achieving enhanced copper flotation concentrate grade by oxidation and flotation
    Patent number: 5110455
    Abstract: The present invention involves a method for separating copper sulfide from rimmed iron sulfide by flotation. Prior to flotation, a slurry containing the sulfides is oxidized and conditioned to achieve a pH greater than pH 9. Thereafter, the slurry is subjected to a froth floatation process by which a copper sulfide, such as chalcopyrite, concentrate is recovered.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: May 5, 1992
    Assignee: Cyprus Minerals Company
    Inventor: Richard O. Huch