Patents by Inventor Michael F. Weishaar

Michael F. Weishaar 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).

  • Water purification process
    Patent number: 4145281
    Abstract: Process for the removal of chromium and zinc corrosion inhibitor compounds from cooling tower blowdown streams, comprising contacting the water of said streams first with a weakly basic anion exchange resin and then with a weakly acidic cation exchange resin.
    Type: Grant
    Filed: December 20, 1976
    Date of Patent: March 20, 1979
    Assignee: Monsanto Company
    Inventors: Michael F. Weishaar, F. Leon Ballard