Patents by Inventor Tokuo Katou

Tokuo Katou 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 titanium trichloride compositions
    Patent number: 4151111
    Abstract: A process for preparing a titanium trichloride composition comprises the steps of:(1) reducing titanium tetrachloride with oaganoaluminum compounds to produce a titanium trichloride composition having a .beta.-crystal structure;(2) heat treating the resulting titanium trichloride having a .beta.-crystal structure and subsequently pulverizing the heat-treated titanium trichloride in the presence or absence of titanium tetrachloride to produce a titanium trichloride composition containing substantially no titanium trichloride having a .beta.-crystal structure;(3) treating the pulverized titanium trichloride composition with a complexing agent; and(4) treating the resulting titanium trichloride composition with a compound selected from the group consisting of metal halide compounds having Lewis acidity and interhalogen compounds.
    Type: Grant
    Filed: April 15, 1977
    Date of Patent: April 24, 1979
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Masuzo Yokoyama, Akira Yamada, Siyouzo Okosi, Tokuo Katou, Shinichi Yoshida