Patents by Inventor Toshizi Nishimura

Toshizi Nishimura 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).

  • Non-conjugated cyclic diene, non-conjugated cyclic diene composition and method of producing polymer based on non-conjugated cyclic diene
    Patent number: 7141631
    Abstract: It is an object of the present invention to provide a non-conjugated cyclic diene and a non-conjugated cyclic diene composition which enable the production of a polymer based on non-conjugated cyclic diene which makes it possible to produce a (co)polymer at a high degree of polymerization activity, and a method of producing a polymer based on non-conjugated cyclic diene which makes it possible to produce a (co)polymer at a high degree of polymerization activity. A non-conjugated cyclic diene is used which meets at least one of the following requirements: (1) it contains a compound having a seven-membered cyclic triene hydrocarbon structure in a specific amount or less and (2) it contains a conjugated polyene compound having an eight-membered bicyclic hydrocarbon structure in a specific amount.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: November 28, 2006
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Toshio Murakami, Hidetatsu Murakami, Yasuhiro Takano, Kenji Doi, Akira Kumagae, Yasuhiro Hasada, Toshizi Nishimura
  • Non-conjugated cyclic diene, non-conjugated cyclic diene composition and method of producing polymer based on non-conjugated cyclic diene
    Publication number: 20050131182
    Abstract: It is an object of the present invention to provide a non-conjugated cyclic diene and a non-conjugated cyclic diene composition which enable the production of a polymer based on non-conjugated cyclic diene which makes it possible to produce a (co)polymer at a high degree of polymerization activity, and a method of producing a polymer based on non-conjugated cyclic diene which makes it possible to produce a (co)polymer at a high degree of polymerization activity. A non-conjugated cyclic diene is used which meets at least one of the following requirements: (1) it contains a compound having a seven-membered cyclic triene hydrocarbon structure in a specific amount or less and (2) it contains a conjugated polyene compound having an eight-membered bicyclic hydrocarbon structure in a specific amount.
    Type: Application
    Filed: November 4, 2004
    Publication date: June 16, 2005
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Toshio Murakami, Hidetatsu Murakami, Yasuhiro Takano, Kenji Doi, Akira Kumagae, Yasuhiro Hasada, Toshizi Nishimura