Patents by Inventor Koichiro Hisano

Koichiro Hisano 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).

  • Solid catalyst component for olefin polymerization, catalyst for olefin polymerization, and method for producing olefin polymer
    Patent number: 9206265
    Abstract: An olefin polymer that is obtained using an olefin polymerization catalyst that includes a solid catalyst component for olefin polymerization that includes titanium, magnesium, a halogen, and an ester compound (A) represented by the following formula (1): R1R2C?C(COOR3)(COOR4), an organoaluminum compound, and an optional external electron donor compound, exhibits primary properties (e.g., molecular weight distribution and stereoregularity) similar to those of an olefin polymer obtained using a solid catalyst component that includes a phthalic ester as an electron donor.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 8, 2015
    Assignee: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Shingo Yamada, Noriaki Nakamura, Koichiro Hisano, Motoki Hosaka, Toshihiko Sugano
  • SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, CATALYST FOR OLEFIN POLYMERIZATION, AND METHOD FOR PRODUCING OLEFIN POLYMER
    Publication number: 20140221583
    Abstract: An olefin polymer that is obtained using an olefin polymerization catalyst that includes a solid catalyst component for olefin polymerization that includes titanium, magnesium, a halogen, and an ester compound (A) represented by the following formula (1): R1R2C?C(COOR3)(COOR4), an organoaluminum compound, and an optional external electron donor compound, exhibits primary properties (e.g., molecular weight distribution and stereoregularity) similar to those of an olefin polymer obtained using a solid catalyst component that includes a phthalic ester as an electron donor.
    Type: Application
    Filed: April 13, 2012
    Publication date: August 7, 2014
    Applicant: TOHO TITANIUM CO., LTD.
    Inventors: Toshiya Uozumi, Shingo Yamada, Noriaki Nakamura, Koichiro Hisano, Motoki Hosaka, Toshihiko Sugano