Patents by Inventor Edward W. J. Thornton

Edward W. J. Thornton 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).

  • Process for the concentration of mineral by flotation process
    Patent number: 4213942
    Abstract: A flotation process for concentrating tungsten or tin ores is achieved by grinding the ores with a grinding medium other than steel, first conditioning a deslimed sulfide free pulp with an acid, further treating the pulp with an emulsified collector and recovering the tungsten or tin in the float. The flotation concentrate can be further enriched by leaching with an inorganic acid.
    Type: Grant
    Filed: January 23, 1978
    Date of Patent: July 22, 1980
    Assignee: Groupe Minier Sullivan Ltee/Sullivan Mining Group Ltd.
    Inventor: Edward W. J. Thornton