Patents by Inventor Eiji Nakaishi

Eiji Nakaishi 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).

  • Thermoplastic elastomer composition and process for producing the same
    Patent number: 7041739
    Abstract: A thermoplastic elastomer composition characterized in that the composition comprises a resin component and at least two kinds of rubber components, wherein at least one kind of the rubber components makes a continuous phase and/or a network-like phase, and the remaining at least one kind of the rubber components makes an isolated phase; and a process for producing the same.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: May 9, 2006
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroshi Toyoda, Nobuo Oi, Eiji Nakaishi
  • Thermoplastic elastomer composition and process for producing the same
    Publication number: 20050020774
    Abstract: A thermoplastic elastomer composition characterized in that the composition comprises a resin component and at least two kinds of rubber components, wherein at least one kind of the rubber components makes a continuous phase and/or a network-like phase, and the remaining at least one kind of the rubber components makes an isolated phase; and a process for producing the same.
    Type: Application
    Filed: March 20, 2002
    Publication date: January 27, 2005
    Inventors: Hiroshi Toyoda, Nobuo Oi, Eiji Nakaishi
  • Solid catalyst component and catalyst for olefin polymerization, and method for producing olefin polymer
    Publication number: 20010021687
    Abstract: A solid catalyst component for olefin polymerization obtained by contacting a titanium compound having a titanium-halogen bond and an ester compound simultaneously, or a mixture of a titanium compound (A) having a titanium-halogen bond and an ester compound (B), with a solid catalyst component precursor (C) containing a magnesium atom, a titanium atom and a hydrocarbyloxy group.
    Type: Application
    Filed: May 10, 2001
    Publication date: September 13, 2001
    Inventors: Shin-Ichi Kumamoto, Eiji Nakaishi, Makato Satoh
  • Method for preparing catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer with the catalyst
    Patent number: 5854164
    Abstract: A solid catalyst component (A) for olefin polymerization comprising Mg, Ti, a halogen and a cyclic organic nitrogen compound (C), a solid catalyst comprising the solid catalyst component and an organoaluminum compound, and a process for producing an olefin polymer with the catalyst.According to the present invention, there can be provided an olefin polymerization catalyst having a high catalyst activity per titanium enough to make the removal of catalyst residues unnecessary and a process for producing an olefin polymer having a low content of low molecular weight component with the catalyst.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: December 29, 1998
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyuki Shiraishi, Eiji Nakaishi, Takahiro Hino, Akio Imai