Patents by Inventor Toshikazu Takata

Toshikazu Takata 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).

  • Patent number: 11578143
    Abstract: A crosslinked rubber composition contains ethylene-propylene-diene copolymer rubber crosslinked with a rotaxane compound having a cyclic molecule and an axial molecule penetrating through the cyclic molecule. In the crosslinked rubber composition, the ethylene-propylene-diene copolymer rubber contains vinylnorbornene, dicyclopentadiene, or tetrahydroindene as a diene component, and the rotaxane compound has a nitrile oxide group on the cyclic molecule and one end of the axial molecule, and the cyclic molecule is crown ether.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: February 14, 2023
    Assignees: TOYODA GOSEI CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Naoyuki Akahori, Akishige Seo, Naoki Iwase, Toshikazu Takata, Toyokazu Tsutsuba
  • Patent number: 11555089
    Abstract: An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: January 17, 2023
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Toshiyuki Tarao, Mami Tanaka, Toshikazu Takata, Jun Sawada
  • Patent number: 11401369
    Abstract: An object of the present invention is to provide a novel rotaxane and a production method of the same. The present invention provides a rotaxane polyurea having a cyclic molecule and a polyurea chain piercing through the cyclic molecule.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: August 2, 2022
    Assignees: SUMITOMO RUBBER INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Toshiyuki Tarao, Mami Tanaka, Toshikazu Takata, Yosuke Akae
  • Publication number: 20220081493
    Abstract: A crosslinked rubber composition contains ethylene-propylene-diene copolymer rubber crosslinked with a rotaxane compound having a cyclic molecule and an axial molecule penetrating through the cyclic molecule. In the crosslinked rubber composition, the ethylene-propylene-diene copolymer rubber contains vinylnorbornene, dicyclopentadiene, or tetrahydroindene as a diene component, and the rotaxane compound has a nitrile oxide group on the cyclic molecule and one end of the axial molecule, and the cyclic molecule is crown ether.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 17, 2022
    Inventors: Naoyuki AKAHORI, Akishige SEO, Naoki IWASE, Toshikazu TAKATA, Toyokazu TSUTSUBA
  • Patent number: 11254638
    Abstract: A compound of the formula (III): wherein R21 is a hydrogen atom or an alkyl group; R22 is a hydrogen atom or an alkyl group; and R23 is a divalent organic group.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: February 22, 2022
    Assignees: DAIKIN INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Tadashi Kanbara, Tsuyoshi Noguchi, Toshikazu Takata, Hiromitsu Sogawa, Shunsuke Monjiyama, Toyokazu Tsutsuba
  • Publication number: 20210238205
    Abstract: A rotaxane compound comprising one or more cyclic molecules and an axial molecule penetrating through inner holes of the cyclic molecules and having cap structures disposed lest the cyclic molecules should be detached, where one of the cyclic molecule and the axial molecule has one of a functional group being capable of reacting with silica and a functional group being capable of reacting with a carbon-carbon unsaturated bond, and the other of the cyclic molecule and the axial molecule has the other of the functional group being capable of reacting with silica and the functional group being capable of reacting with a carbon-carbon unsaturated bond.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 5, 2021
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Shoko NAKAHATA, Toshikazu TAKATA, Toyokazu TSUTSUBA
  • Publication number: 20210198415
    Abstract: An object of the present invention is to provide a novel rotaxane and a production method of the same. The present invention provides a rotaxane polyurea having a cyclic molecule and a polyurea chain piercing through the cyclic molecule.
    Type: Application
    Filed: December 23, 2020
    Publication date: July 1, 2021
    Applicants: Sumitomo Rubber Industries, Ltd., Tokyo Institute of Technology
    Inventors: Toshiyuki TARAO, Mami TANAKA, Toshikazu TAKATA, Yosuke AKAE
  • Patent number: 10982049
    Abstract: The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: reacting a sulfoxide represented by the following formula (1) with a particular aromatic compound to obtain a poly(arylenesulfonium salt) having a particular constitutional unit; and dealkylating or dearylating the poly(arylenesulfonium salt) to obtain a polyarylene sulfide resin having a particular constitutional unit, wherein R1 represents an alkyl group having 1 to 10 carbon atoms, etc.; Ar1 and Ar2 each independently represent an arylene group optionally having a substituent; and Z represents a direct bond, etc.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: April 20, 2021
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Hajime Watanabe, Takashi Furusawa, Satoshi Ogawa, Toshikazu Takata
  • Publication number: 20210078944
    Abstract: The present invention provides a compound represented by formula (I) wherein symbols in the formula are as defined in the specification.
    Type: Application
    Filed: November 25, 2020
    Publication date: March 18, 2021
    Applicants: Tokyo Institute Of Technology, Daikin Industries, Ltd.
    Inventors: Toshikazu Takata, Hiromitsu Sogawa, Tadashi Kanbara, Tsuyoshi Noguchi
  • Patent number: 10947346
    Abstract: Disclosed is a production method comprising a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: March 16, 2021
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Shun Araki, Hajime Watanabe, Satoshi Ogawa, Toshikazu Takata
  • Publication number: 20200283429
    Abstract: A nitrile oxide compound which is a compound represented by General Formula [I], in which a melting point is 25° C. to 300° C., and an equivalent of nitrile oxide is 1.0 to 4.5 mmol/g. In the general formula, s: an integer of 1 to 4; R1 and R2: a hydrocarbon group having 4 to 10 carbon atoms or a halogenated hydrocarbon group having 4 to 10 carbon atoms; X: a divalent hydrocarbon group, —O—, —S—, or —N(R3)—; R3: a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms; and A: an s-valent organic group.
    Type: Application
    Filed: May 26, 2020
    Publication date: September 10, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Koji ITAGAKI, Hisashi OHTAKI, Toshikazu TAKATA, Hiromitsu SOGAWA
  • Publication number: 20200157284
    Abstract: Disclosed is a production method comprising a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Inventors: Shun Araki, Hajime Watanabe, Satoshi Ogawa, Toshikazu Takata
  • Publication number: 20200140377
    Abstract: A compound of the formula (III): wherein R21 is a hydrogen atom or an alkyl group; R22 is a hydrogen atom or an alkyl group; and R23 is a divalent organic group.
    Type: Application
    Filed: January 2, 2020
    Publication date: May 7, 2020
    Applicants: DAIKIN INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Tadashi KANBARA, Tsuyoshi Noguchi, Toshikazu Takata, Hiromitsu Sogawa, Shunsuke Monjiyama, Toyokazu Tsutsuba
  • Patent number: 10633333
    Abstract: The present invention provides a compound of the formula (I): wherein, A is R6(R7)s, N, O, S, or —NR5—; R6 is an s-valent organic group; R7 is each independently, —O—, —S—, —NR5— or —O—P(?O)OR4?—; R2 and R3 are each independently a hydrogen atom or a hydrocarbon group; R4? is each independently, a hydrocarbon group; R5 is each independently, a hydrogen atom or a hydrocarbon group; and s is an integer of 1-10.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: April 28, 2020
    Assignees: DAIKIN INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Tadashi Kanbara, Tsuyoshi Noguchi, Toshikazu Takata, Hiromitsu Sogawa, Toyokazu Tsutsuba
  • Patent number: 10577464
    Abstract: The present invention relates to a polyarylene sulfide resin, a method for producing the same, a poly(arylene sulfonium salt), and a method for producing the same. The production method comprises a step of obtaining a poly(arylene sulfonium salt) comprising a terminal group including at least one functional group selected from the group consisting of a carboxy group, a hydroxy group and an amino group, and a step of dealkylating or dearylating the poly(arylene sulfonium salt) to obtain a polyarylene sulfide resin, and a polyarylene sulfide resin comprising a terminal group including a functional group obtainable by the production method.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: March 3, 2020
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Shun Araki, Hajime Watanabe, Satoshi Ogawa, Toshikazu Takata
  • Patent number: 10562846
    Abstract: The present invention provides a compound of the formula (I): wherein, R1 is a hydrogen atom or a hydrocarbon group; R2 is —R4—R5; R3 is —R4—R5 or —R4—R6; R4 is a divalent organic group; R5 is OH, SH, COOH or NHR9; R9 is a hydrogen atom or an alkyl group having 1-6 carbon atoms; and R6 is a hydrogen atom or an alkyl group having 1-6 carbon atoms.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: February 18, 2020
    Assignees: DAIKIN INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Tadashi Kanbara, Tsuyoshi Noguchi, Toshikazu Takata, Hiromitsu Sogawa, Shunsuke Monjiyama, Toyokazu Tsutsuba
  • Publication number: 20190367659
    Abstract: An object of the present invention is to provide a novel rotaxane and a polyurethane using the same. The present invention provides a rotaxane having a crown ether and a chain molecule piercing through the cyclic structure of the crown ether, wherein a hydroxyl group exists at one terminal of the chain molecule, and a hydroxyl group bonds to the cyclic structure of the crown ether. The present invention further provides a polyurethane using the rotaxane as a polyol component.
    Type: Application
    Filed: May 7, 2019
    Publication date: December 5, 2019
    Applicants: SUMITOMO RUBBER INDUSTRIES, LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Toshiyuki Tarao, Mami Tanaka, Toshikazu Takata, Jun Sawada
  • Publication number: 20190300652
    Abstract: The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: reacting a sulfoxide represented by the following formula (1) with a particular aromatic compound to obtain a poly(arylenesulfonium salt) having a particular constitutional unit; and dealkylating or dearylating the poly(arylenesulfonium salt) to obtain a polyarylene sulfide resin having a particular constitutional unit, wherein R1 represents an alkyl group having 1 to 10 carbon atoms, etc.; Ar1 and Ar2 each independently represent an arylene group optionally having a substituent; and Z represents a direct bond, etc.
    Type: Application
    Filed: June 19, 2019
    Publication date: October 3, 2019
    Inventors: Hajime Watanabe, Takashi Furusawa, Satoshi Ogawa, Toshikazu Takata
  • Patent number: 10385168
    Abstract: The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: reacting a sulfoxide represented by the following formula (1) with a particular aromatic compound to obtain a poly(arylenesulfonium salt) having a particular constitutional unit; and dealkylating or dearylating the poly(arylenesulfonium salt) to obtain a polyarylene sulfide resin having a particular constitutional unit, wherein R1 represents an alkyl group having 1 to 10 carbon atoms, etc.; Ar1 and Ar2 each independently represent an arylene group optionally having a substituent; and Z represents a direct bond, etc.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 20, 2019
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Hajime Watanabe, Takashi Furusawa, Satoshi Ogawa, Toshikazu Takata
  • Patent number: 10072124
    Abstract: The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: a step of reacting a poly(arylenesulfonium salt) having a constitutional unit represented by the following formula (1) with an aliphatic amide compound to obtain a polyarylene sulfide resin having a constitutional unit represented by the following formula (2): wherein R1 represents a direct bond, -Ar2-, -Ar2-S— or -Ar2-O—; Ar1 and Ar2 each represent an arylene group optionally having a functional group as a substituent; R2 represents an alkyl group having 1 to 10 carbon atoms or an aromatic group optionally having an alkyl group having 1 to 10 carbon atoms as a substituent; and X? represents an anion, wherein R1 and Ar1 are the same as described above.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: September 11, 2018
    Assignees: DIC Corporation, National University Corporation, Iwate University
    Inventors: Hajime Watanabe, Takashi Furusawa, Satoshi Ogawa, Toshikazu Takata