Patents by Inventor Hidesaburo Oi

Hidesaburo Oi 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 polymerization of olefins and catalyst composition therefor
    Patent number: 4135045
    Abstract: An improved process for the polymerization of olefins in the presence of catalyst consisting essentially of:(A) a titanium trichloride composition obtained by micro-pulverizing a titanium trichloride component prepared by reduction of titanium tetrachloride with a member selected from the group consisting of hydrogen, silicon, metallic titanium and metallic aluminum, in the presence of a complex of aluminum chloride or aluminum bromide with an electron-donor selected from the group consisting of oxygen-containing organic compounds, nitrogen-containing organic compounds and phosphorus-containing organic compounds, the amount of the complex being 0.005 to 0.5 mole per mole of the titanium trichloride component, and extracting the micro-pulverized titanium trichloride component with a solvent selected from the group consisting of saturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated aromatic hydrocarbons; and(B) an organoaluminum compound,And the catalyst therefor.
    Type: Grant
    Filed: September 1, 1976
    Date of Patent: January 16, 1979
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Norio Matsuzawa, Hidesaburo Oi, Hiroshi Nishimura, Shigeru Wada, Juntaro Sasaki
  • Process for polymerization of olefins and catalyst composition therefor
    Patent number: 4048415
    Abstract: An improved process for the polymerization of olefins in the presence of catalyst consisting essentially of:A. a titanium trichloride composition obtained by micro-pulverizing a titanium trichloride component prepared by reduction of titanium tetrachloride with a member selected from the group consisting of hydrogen, silicon, metallic titanium and metallic aluminum, in the presence of a complex of aluminum chloride or aluminum bromide with an electron-donor selected from the group consisting of oxygen-containing organic compounds, nitrogen-containing organic compounds and phosphorus-containing organic compounds, the amount of the complex being 0.005 to 0.5 mole per mole of the titanium trichloride component, and extracting the micro-pulverized titanium trichloride component with a solvent selected from the group consisting of saturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated aromatic hydrocarbons; andB. an organoaluminum compound, and the catalyst therefor.
    Type: Grant
    Filed: September 30, 1971
    Date of Patent: September 13, 1977
    Assignee: Mitsui Petrochemical Industries Ltd.
    Inventors: Norio Matsuzawa, Hidesaburo Oi, Hiroshi Nishimura, Shigeru Wada, Juntaro Sasaki