Patents by Inventor Katsuhiro Sakata

Katsuhiro Sakata 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).

  • Process for preparing aluminum sulfate
    Patent number: 5356602
    Abstract: Aluminum sulfate that is less colored is prepared by adjusting the concentration of hydrogen peroxide in sulfuric acid to 0.1% by weight or less, and contacting the sulfuric acid with an alumina-containing compound.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: October 18, 1994
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Mitsuo Tanjo, Toshio Ashitani, Tetsuo Fujita, Katsuhiro Sakata, Mikitoshi Nakada