Patents by Inventor Sadaichi Shigeta

Sadaichi Shigeta 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 desulfurizing an exhaust gas
    Patent number: 4420465
    Abstract: A process for desulfurizing an exhaust gas which comprises desulfurizing an exhaust gas containing SO.sub.2 by bringing it into contact with a slurry containing calcium compounds and aluminum compounds, characterized in that the concentration of the dissolved aluminum ion in said slurry is detected and a manganese compound is supplied into said slurry in such a manner that the ratio of the concentration of manganese (including both solid and liquid) to said concentration of the dissolved aluminum ion may be maintained in a molar ratio of less than 1 in said slurry.
    Type: Grant
    Filed: June 22, 1982
    Date of Patent: December 13, 1983
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Naoharu Shinoda, Atsushi Tatani, Naohiko Ukawa, Michio Oshima, Susumu Okino, Sadaichi Shigeta