Patents by Inventor Lionel A. Goold

Lionel A. Goold 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).

  • Ore dressing process
    Patent number: 4274951
    Abstract: A process of dressing mineral ores in order to improve the quality of the float in the flotation of certain minerals, particularly apatite ores. The process involves adding to a mineral ore pulp a gangue depressant material comprising certain guar gum ethers whereby an improved separation of calcite and other gangue minerals from the mineral values, particularly phosphate values, is obtained.
    Type: Grant
    Filed: December 14, 1978
    Date of Patent: June 23, 1981
    Assignee: Trochem (PTY) Limited
    Inventor: Lionel A. Goold