Patents by Inventor Seisyu Hayashi

Seisyu Hayashi 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).

  • Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester
    Patent number: 7144614
    Abstract: This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound and a phosphorus compound having a specific structure. Further, this invention relates to polyester produced by using this polyester polymerization catalyst and a process for producing polyester. Further, this invention relates to fibers, films and hollow molded articles comprising the polyester.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: December 5, 2006
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Takahiro Nakajima, Ken-ichi Tsukamoto, Shoichi Gyobu, Nobuo Moriyama, Mitsuyoshi Kuwata, Yoshinao Matsui, Seisyu Hayashi, Katsuya Ito, Masaou Matsuda
  • Polyester polymerization catalyst, polyester produced by using the same, and process for producing polyester
    Publication number: 20030083191
    Abstract: This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound and a phosphorus compound having a specific structure. Further, this invention relates to polyester produced by using this polyester polymerization catalyst and a process for producing polyester. Further, this invention relates to fibers, films and hollow molded articles mprising the polyester.
    Type: Application
    Filed: July 2, 2002
    Publication date: May 1, 2003
    Inventors: Takahiro Nakajima, Ken-Ichi Tsukamoto, Shoichi Gyobu, Nobuo Moriyama, Mitsuyoshi Kuwata, Yoshinao Matsui, Seisyu Hayashi, Katsuya Ito, Masaou Matsuda