Patents by Inventor Ryosuke Ohno

Ryosuke Ohno 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).

  • Olefin polymerization catalyst and method for the polymerization of olefin using said olefin polymerization catalyst
    Patent number: 5840645
    Abstract: In accordance with the present invention, there are provided an olefin polymerization catalyst comprising an organoaluminum oxy-compound (A), a transition metal compound (B) and a hydrogenated organoaluminum compound (C); a solid olefin polymerization catalyst comprising the above-mentioned components (A), (B), (C) and a carrier (D); a prepolymerized catalyst formed by prepolymerization of olefin on a catalyst component comprising the above-mentioned components (A), (B), (C) and (D); an olefin polymerization catalyst comprising the above-mentioned solid olefin polymerization catalyst or the above-mentioned prepolymerized catalyst and an organoaluminum compound; and a method for the polymerization of olefin which comprises polymerizing olefin in the presence of the above-mentioned catalysts.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: November 24, 1998
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Ryosuke Ohno, Toshiyuki Tsutsui