Patents by Inventor Tatsuo Tsukamoto

Tatsuo Tsukamoto 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).

  • Method for the manufacture of ferric sulfate solution and a water treatment agent using the same
    Patent number: 6375919
    Abstract: A method for the manufacture of a ferric sulfate solution is provided, characterized in that, iron ore containing 30% by weight or more FeOOH as a trivalent iron (Fe3+) is calcined at 200-600° C., and then dissolved in sulfuric acid. A water treatment agent consisting of a basic ferric sulfate solution manufactured by the above mentioned manufacturing method is used as a coagulating agent for water treatment.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 23, 2002
    Assignee: Taki Chemical Co., Ltd.
    Inventors: Toshihiko Kakio, Tatsuo Tsukamoto