Patents by Inventor Patrick H. Payton

Patrick H. Payton 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).

  • Extracting columbium-tantalum values from pyrochlore ores
    Patent number: 4182744
    Abstract: A method of extracting high purity columbium oxide, also known as niobium oxide, from barium-rich pyrochlore ores by treating the ore with a calcium salt such as calcium chloride, fusing the ore with caustic soda and a fluorine containing compound, and subsequently acid leaching the fused mass; and from calcium-rich pyrochlore ores by fusing the ore with caustic soda and a fluorine containing compound, and subsequently acid leaching the fused mass. The amount of fluorine containing compound used should contain anywhere from above 2% to about 10% fluorine content by weight relative to the ore.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: January 8, 1980
    Assignee: Teledyne Industries, Inc.
    Inventors: Ralph H. Nielsen, Patrick H. Payton