Patents by Inventor Melvin F. Katzer

Melvin F. Katzer 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 grinding process
    Patent number: 4162045
    Abstract: A process for grinding coal or ores containing metal values comprising carrying out said grinding in a liquid medium and with a grinding aid system comprising an anionic polyelectrolyte derived from polyacrylic acid and certain inorganic metal salts, said system being dispersible in the liquid medium and being present in an amount effective to provide increased grinding efficiency.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: July 24, 1979
    Assignee: The Dow Chemical Company
    Inventors: Melvin F. Katzer, Richard R. Klimpel, Willy Manfroy