Patents by Inventor Hirohiko MURASE

Hirohiko MURASE 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).

  • Publication number: 20230059817
    Abstract: A cyclic olefin copolymer includes one or more olefin-derived constituent units (A) represented by General Formula (I), one or more cyclic olefin-derived constituent units (C) represented by General Formula (II), one or more cyclic non-conjugated diene-derived constituent units (B) represented by General Formula (III), and one or more cyclic olefin-derived constituent units (D) represented by General Formula (V), in which, when a total number of moles of the constituent units in the cyclic olefin copolymer is 100 mol %, a content of the constituent unit (C) is 5 mol % or more and 40 mol % or less.
    Type: Application
    Filed: January 20, 2021
    Publication date: February 23, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kazuoki NAKAI, Hirohiko MURASE, Fumito TAKEUCHI
  • Publication number: 20220275135
    Abstract: A cyclic olefin-based copolymer resin composition includes a cyclic olefin-based copolymer (M); and a maleimide compound (L), in which the cyclic olefin-based copolymer (M) includes a cyclic olefin-based copolymer (m) including a repeating unit represented by a specific general formula, the maleimide compound (L) has a solubility parameter (SP value) obtained by Fedors method of 19J1/2/cm3/2 or more and 26J1/2/cm3/2 or less and includes a maleimide compound (1), which is a bismaleimide compound having at least two maleimide groups in a molecule, and when a total of the cyclic olefin-based copolymer (M) and the maleimide compound (L) is 100 parts by mass, a content of the maleimide compound (L) is 1 part by mass or more and 50 parts by mass or less.
    Type: Application
    Filed: November 22, 2019
    Publication date: September 1, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirohiko MURASE, Koutarou ASAHINA, Fumito TAKEUCHI
  • Patent number: 10662321
    Abstract: The cyclic olefin copolymer composition of the present invention includes a cyclic olefin copolymer (m) including a specific amount of a specific repeating unit and a cyclic olefin copolymer (n) different from the cyclic olefin copolymer (m). The cyclic olefin copolymer (n) includes at least one type selected from a copolymer (n1) of ethylene or ?-olefin and cyclic olefin (where the copolymer (n1) does not include a repeating unit derived from specific cyclic non-conjugated dienes) and a cyclic olefin ring-opening polymer (n2), and when a total amount of the cyclic olefin copolymer (m) and the cyclic olefin copolymer (n) is 100% by mass, a content of the cyclic olefin copolymer (m) is 5% by mass or more to 95% by mass or less, and a content of the cyclic olefin copolymer (n) is 5% by mass or more to 95% by mass or less.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: May 26, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Junji Saito, Shigeo Kiba, Hirohiko Murase, Haruka Saito, Tomoaki Matsugi
  • Publication number: 20190062541
    Abstract: The cyclic olefin copolymer composition of the present invention includes a cyclic olefin copolymer (m) including a specific amount of a specific repeating unit and a cyclic olefin copolymer (n) different from the cyclic olefin copolymer (m). The cyclic olefin copolymer (n) includes at least one type selected from a copolymer (n1) of ethylene or ?-olefin and cyclic olefin (where the copolymer (n1) does not include a repeating unit derived from specific cyclic non-conjugated dienes) and a cyclic olefin ring-opening polymer (n2), and when a total amount of the cyclic olefin copolymer (m) and the cyclic olefin copolymer (n) is 100% by mass, a content of the cyclic olefin copolymer (m) is 5% by mass or more to 95% by mass or less, and a content of the cyclic olefin copolymer (n) is 5% by mass or more to 95% by mass or less.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 28, 2019
    Inventors: Junji SAITO, Shigeo KIBA, Hirohiko MURASE, Haruka SAITO, Tomoaki MATSUGI