Patents by Inventor Shuichi SUNAGA

Shuichi SUNAGA 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).

  • Copolymer of 1, 3, 7-octatriene and butadiene, hydride thereof, and method for producing said copolymer
    Patent number: 11332567
    Abstract: The present invention provides a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from butadiene and a hydride thereof. Furthermore, the present invention provides a method of producing a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from butadiene.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: May 17, 2022
    Assignee: KURARAY CO., LTD.
    Inventors: Shuichi Sunaga, Tomoaki Tsuji, Takashi Hori, Yasutaka Inubushi
  • 1,3, 7-octatriene polymer, hydride thereof, and method for producing said polymer
    Patent number: 11198744
    Abstract: The present invention provides a 1,3,7-octatriene polymer having a narrow molecular weight distribution and a hydride thereof. Specifically, the 1,3,7-octatriene polymer is a polymer containing a structural unit derived from 1,3,7-octatriene, wherein the polymer has not only a molecular weight distribution (Mw/Mn) of 2.05 or less but also a weight average molecular weight (Mw) of 1,000 to 1,000,000.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: December 14, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Shuichi Sunaga, Tomoaki Tsuji, Takashi Hori, Yasutaka Inubushi
  • Copolymer of 1,3,7-octatriene and isoprene, hydride thereof, and method for producing said copolymer
    Patent number: 11091578
    Abstract: The present invention provides a copolymer of 1,3,7-octatriene and isoprene having a narrow molecular weight distribution (Mw/Mn) and a hydride thereof. Furthermore, in a production method of a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from isoprene, high raw material conversions are achieved for a short polymerization time. Specifically, the copolymer is a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from isoprene and is a copolymer having a molecular weight distribution (Mw/Mn) of less than 1.44, or the like.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: August 17, 2021
    Assignee: KURARAY CO., LTD.
    Inventors: Shuichi Sunaga, Tomoaki Tsuji, Takashi Hori, Yasutaka Inubushi
  • COPOLYMER OF 1, 3, 7-OCTATRIENE AND STYRENE, HYDRIDE THEREOF, AND METHOD FOR PRODUCING SAID COPOLYMER
    Publication number: 20200095359
    Abstract: The present invention provides a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from styrene and a hydride thereof. Furthermore, the present invention provides a method of producing a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from styrene.
    Type: Application
    Filed: December 28, 2017
    Publication date: March 26, 2020
    Applicant: KURARAY CO., LTD.
    Inventors: Shuichi SUNAGA, Tomoaki TSUJI, Takashi HORI, Yasutaka INUBUSHI
  • COPOLYMER OF 1, 3, 7-OCTATRIENE AND BUTADIENE, HYDRIDE THEREOF, AND METHOD FOR PRODUCING SAID COPOLYMER
    Publication number: 20190359754
    Abstract: The present invention provides a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from butadiene and a hydride thereof. Furthermore, the present invention provides a method of producing a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from butadiene.
    Type: Application
    Filed: December 28, 2017
    Publication date: November 28, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Shuichi SUNAGA, Tomoaki TSUJI, Takashi HORI, Yasutaka INUBUSHI
  • 1, 3, 7-OCTATRIENE POLYMER, HYDRIDE THEREOF, AND METHOD FOR PRODUCING SAID POLYMER
    Publication number: 20190330393
    Abstract: The present invention provides a 1,3,7-octatriene polymer having a narrow molecular weight distribution and a hydride thereof. Specifically, the 1,3,7-octatriene polymer is a polymer containing a structural unit derived from 1,3,7-octatriene, wherein the polymer has not only a molecular weight distribution (Mw/Mn) of 2.05 or less but also a weight average molecular weight (Mw) of 1,000 to 1,000,000.
    Type: Application
    Filed: December 28, 2017
    Publication date: October 31, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Shuichi SUNAGA, Tomoaki TSUJI, Takashi HORI, Yasutaka INUBUSHI
  • COPOLYMER OF 1,3,7-OCTATRIENE AND ISOPRENE, HYDRIDE THEREOF, AND METHOD FOR PRODUCING SAID COPOLYMER
    Publication number: 20190315899
    Abstract: The present invention provides a copolymer of 1,3,7-octatriene and isoprene having a narrow molecular weight distribution (Mw/Mn) and a hydride thereof. Furthermore, in a production method of a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from isoprene, high raw material conversions are achieved for a short polymerization time. Specifically, the copolymer is a copolymer containing a structural unit derived from 1,3,7-octatriene and a structural unit derived from isoprene and is a copolymer having a molecular weight distribution (Mw/Mn) of less than 1.44, or the like.
    Type: Application
    Filed: December 28, 2017
    Publication date: October 17, 2019
    Applicant: KURARAY CO., LTD.
    Inventors: Shuichi SUNAGA, Tomoaki TSUJI, Takashi HORI, Yasutaka INUBUSHI