Patents by Inventor John S. Rendell

John S. Rendell 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).

  • Extraction
    Patent number: 4284606
    Abstract: A process as described for extracting at least two desired constituents from a mineral using a liquid reagent which produces the constituents, or compounds thereof, in separable form and independently extracting those constituents, or compounds thereof. The process if especially valuable for the extraction of phosphoric acid and metal values, such as uranium from phosphate rock.
    Type: Grant
    Filed: November 27, 1978
    Date of Patent: August 18, 1981
    Assignee: RTL Contactor Holding S.A.
    Inventors: John S. Rendell, Maurice J. Cahalan