Patents by Inventor Teruhiro Setoguchi

Teruhiro Setoguchi 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).

  • Method for the polymerization or copolymerization of .alpha.-olefin
    Patent number: 4079175
    Abstract: A method for the polymerization or copolymerization of .alpha.-olefin wherein .alpha.-olefin is polymerized or copolymerized in the presence of a catalyst essentially comprising a reformed titanium trichloride and an organoaluminum compound. The reformed titanium trichloride is prepared by simultaneously pulverizing an organoaluminum compound and a crystalline titanium trichloride compound, the latter comprising titanium trichloride and aluminum trichloride, treating the pulverized mixture with a solvent selected from aromatic hydrocarbons, aromatic hydrocarbon halides and organic ethers, separating the treated material from the solvent, and heating the separated material.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: March 14, 1978
    Assignee: Toyo Stauffer Chemical Co., Ltd.
    Inventors: Shoichi Tokunaga, Atsumi Kato, Teruhiro Setoguchi, Shoji Mizuno