Patents by Inventor Robert R. Frable

Robert R. Frable 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).

  • Brine treatment using ethylene carboxylic acid polymers
    Patent number: 4747957
    Abstract: Hardness values (Ca.sup.++ and Mg.sup.++) and other polyvalent metal cations are removed from alkali metal brines (esp. NaCl) by using a high surface area ethylene/carboxylic acid polymer (esp. porous ethylene/acrylic acid copolymers).
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: May 31, 1988
    Assignee: The Dow Chemical Company
    Inventors: Walter L. Vaughn, Harry S. Burney, Robert D. Spradling, Robert R. Frable