Patents by Inventor Satoru Chosa

Satoru Chosa 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
    Patent number: 6984600
    Abstract: An olefin polymerization catalyst comprising: (A1) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, (c1) an electron compound, and (d1) a polysiloxane, (B) an organoaluminum compound of the formula R1pAlQ3-p, and (C) an aminosilane compound of the formula (R2R3N)Si(OR4)3 has a high activity to hydrogen as compared with conventional catalysts and maintains the capability of producing polymers with a high stereoregularity at a high yield.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: January 10, 2006
    Assignees: Toho Catalyst Co., LTD, Ube Industries, LTD
    Inventors: Satoru Chosa, Kunihiko Tashino, Motozo Yoshikiyo, Hiroshi Sato
  • Olefin polymerization catalyst
    Publication number: 20050032991
    Abstract: An olefin polymerization catalyst comprising: (A1) a solid catalyst component prepared by contacting (a1) a dialkoxymagnesium, (b1) a tetravalent titanium halide, (c1) an electron compound, and (d1) a polysiloxane, (B) an organoaluminum compound of the formula R1pAlQ3-p, and (C) an aminosilane compound of the formula (R2R3N)Si (OR4)3 has a high activity to hydrogen as compared with conventional catalysts and maintains the capability of producing polymers with a high stereoregularity at a high yield.
    Type: Application
    Filed: July 21, 2004
    Publication date: February 10, 2005
    Applicants: TOHO CATALYST CO, LTD., UBE INDUSTRIES, LTD.
    Inventors: Satoru Chosa, Kunihiko Tashino, Motozo Yoshikiyo, Hiroshi Sato