Patents by Inventor Edwin K. Cundy

Edwin K. Cundy 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).

  • Patent number: 3979282
    Abstract: A process for treating fine minerals, for example clays, to separate therefrom mineral impurities. The fine mineral is conditioned in the form of an aqueous slurry containing a deflocculant, for example sodium silicate, and a collector is added to the aqueous slurry of the mineral which is then subjected to a froth flotation process in a flotation cell having a central, internal, submerged impellor which comprises a base plate, to which there are attached a plurality of blades in radial arrangement, and a stationary cover plate which is separated from the tips of the blades by a small clearance, the impellor being rotated at a peripheral speed of at least 2000 feet/minute.
    Type: Grant
    Filed: January 16, 1975
    Date of Patent: September 7, 1976
    Assignee: English Clays Lovering Pochin & Company Limited
    Inventor: Edwin K. Cundy