Patents by Inventor Thomas R. A. Davey

Thomas R. A. Davey 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 of extracting tungsten values from tungsten containing ores
    Patent number: 4910000
    Abstract: A method of extracting tungsten values from tungsten containing ores comprising step (i) forming a mixture of a tungsten containing ore and a first mineral acid adapted to consume acid consuming substances in the ore and step (ii) thereafter adding organic anions to produce a solution containing dissolved tungsten values.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: March 20, 1990
    Assignee: The University of Melbourne
    Inventor: Thomas R. A. Davey
  • Process for refining metals by drossing procedures
    Patent number: 4356033
    Abstract: A process for refining metals, such as lead and tin, by removal of impurities as a dross or crust, in which a cooling medium is applied to the surface of a melt of the metal and, simultaneously with cooling, stirring the melt.
    Type: Grant
    Filed: June 10, 1980
    Date of Patent: October 26, 1982
    Inventor: Thomas R. A. Davey