Patents by Inventor Toru Arai

Toru Arai 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: 11978357
    Abstract: Disclosed is an ulcer model used to practice a procedure including hemorrhage arrest, the ulcer model including a model main body which includes upper and lower surfaces facing each other and a tubular simulated blood vessel path provided between the upper surface and the lower surface and having an inlet opening and an outlet opening. The upper surface includes a ring-shaped raised surface that rises in a thickness direction of the model main body and a simulated ulcer surface that is a recessed bottom surface surrounded by the raised surface. The simulated blood vessel path extends from a part other than the upper surface of the surfaces of the model main body to the simulated ulcer surface or an area in the vicinity of the inside thereof.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: May 7, 2024
    Assignees: Denka Company Limited, Tohoku University
    Inventors: Akira Miyama, Toru Arai, Takashi Sasaki, Takeshi Kanno, Yularo Arata, Atsushi Masamune
  • Publication number: 20230365797
    Abstract: A composition comprises: a resin component including an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying all the following conditions (1) to (4): (1) a number average molecular weight of the copolymer is 500 or more and 100000 or less; (2) the aromatic vinyl compound monomer is an aromatic vinyl compound having 8 or more and 20 or less carbon atoms, and a content of a unit of the aromatic vinyl compound monomer is 0 mass % or more and 70 mass % or less; (3) the aromatic polyene is one or more selected from polyenes having 5 or more and 20 or less carbon atoms and having a plurality of vinyl groups and/or vinylene groups in the molecule, and a content of the vinyl groups and/or the vinylene groups derived from the unit of the aromatic polyene is 1.
    Type: Application
    Filed: September 9, 2021
    Publication date: November 16, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Toru ARAI, Azusa YAGI, Suguru ONUKI, Shota YAMAMOTO
  • Publication number: 20230287222
    Abstract: A varnish having low viscosity and a cured product thereof having a high degree of cross-linking, exhibiting excellent low dielectric properties and mechanical properties at high temperature, and a low coefficient of linear thermal expansion are provided. A varnish comprising an olefin-aromatic vinyl compound-aromatic polyene copolymerized oligomer satisfying specific conditions, one or more selected from the following (a) to (c), and (d) a solvent: (a) a curing agent; (b) one or a plurality of resins selected from a hydrocarbon-based elastomer, a polyphenylene ether-based resin, an olefin-aromatic vinyl compound-aromatic polyene copolymer, and an aromatic polyene-based resin; and (c) a polar monomer; and a cured product of the varnish.
    Type: Application
    Filed: July 13, 2021
    Publication date: September 14, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventor: Toru ARAI
  • Publication number: 20230193090
    Abstract: A composition for temporary bonding, includes: (A) a (meth)acrylate having the following (A-1) and (A-2): (A-1) a monofunctional (meth)acrylate whose side chain is an alkyl group having 18 or more carbon atoms and homopolymer has a Tg of ?100° C. to 60° C., and (A-2) a polyfunctional (meth)acrylate; (B) a polyisobutene homopolymer and/or a polyisobutene copolymer; and (C) a photo radical polymerization initiator.
    Type: Application
    Filed: May 17, 2021
    Publication date: June 22, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Tometomo UCHIDA, Toru ARAI, Takashi DOMOTO, Takako TANIGAWA, Jun WATANABE, Megumi SUDO, Jun YOSHIDA
  • Publication number: 20230147757
    Abstract: A spherical silica powder which, when heated from 25° C. up to 1000° C. at a rate of 30° C./min, desorbs water molecules in an amount of 0.01 mmol/g or less at 500° C. to 1000° C., and which has a specific surface area of 1 to 30 m2/g.
    Type: Application
    Filed: April 22, 2021
    Publication date: May 11, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Takuto OKABE, Motoharu FUKAZAWA, Toru ARAI
  • Publication number: 20230023889
    Abstract: A curable composition includes an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying conditions (1) to (4) and an additive resin, which is at least one of a hydrocarbon-based elastomer, polyphenylene ether, olefin-aromatic vinyl compound-aromatic polyene copolymerized oligomer, and aromatic polyene-based resin. (1) The number average molecular weight of the copolymer is 5000 to 100000. (2) The aromatic vinyl compound monomer has 8 to 20 carbon atoms, and the content of the unit of the monomer is 0 to 70 mass %. (3) The aromatic polyene is selected from polyenes having 5 to 20 carbon atoms and a plurality of vinyl and/or vinylene groups in the molecule, and the content of the groups is 1.5 to 20 pieces per number average molecular weight. (4) The olefin is selected from olefins having 2 to 20 carbon atoms, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.
    Type: Application
    Filed: December 1, 2020
    Publication date: January 26, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Toru ARAI, Shota YAMAMOTO, Hiroaki NISHIMURA, Azusa YAGI
  • Publication number: 20230023832
    Abstract: A laminate has an olefin-aromatic vinyl compound-aromatic polyene copolymer and a metal foil. The number average molecular copolymer weight is between 5000 and 100000; the aromatic vinyl compound monomer is aromatic vinyl compound having between 8 and 20 carbon atoms, and the aromatic vinyl compound monomer unit content is between 10 and 60 mass %; the aromatic polyene is selected having between 5 and 20 carbon atoms and vinyl and/or vinylene groups in the molecule, the content derived from the aromatic polyene unit is between 1.5 and 20 pieces per number average molecular weight; and the olefin is selected having between 2 and 20 carbon atoms, being ethylene alone, or having a mass ratio of ?-olefin monomer components other than ethylene to an ethylene monomer component contained in the olefin, of 1/7 or less, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.
    Type: Application
    Filed: December 1, 2020
    Publication date: January 26, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Toru ARAI, Shota YAMAMOTO, Hiroaki NISHIMURA, Azusa YAGI
  • Patent number: 11472955
    Abstract: [Problem] To provide a softer resin material that can be highly filled with an oil and that has almost no seepage (bleed-out) of oil. Additionally, to provide a biological model that is easy to handle and that has a softness and mechanical properties closer to those of organs and a texture close to that of organs. [Solution] A resin composition containing 100 parts by mass of component (A), a hydrogenated block copolymer having an MFR (measured at a temperature of 230° C. and with a load of 2.16 kg) of 1 g/10 min or less; more than 1000 parts by mass and at most 2000 parts by mass of component (B), an oil; and at least 10 parts by mass and at most 120 parts by mass of component (C), a polyolefin resin having a specific surface area of 0.01 to 30 m2/g.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: October 18, 2022
    Assignee: Denka Company Limited
    Inventors: Takashi Sasaki, Akira Miyama, Toru Arai
  • Publication number: 20220074081
    Abstract: A method for a carbon nanofiber composite, which can obtain a carbon nanofiber composite with high productivity and high activity, and which does not require removal of fluidizing materials or dispersing materials, provides a carbon nanofiber composite having improved dispersibility. The method for producing the carbon nanofiber composite includes bringing at least one catalyst and at least one particulate carbon material into contact with at least one gas containing at least one gaseous carbon-containing compound while mechanically stirring the catalyst and the particulate carbon material in a reactor. The carbon nanofiber composite includes carbon nanofibers and at least one particulate carbon material, wherein the particulate carbon material has 70% by volume or more of particles with a particle diameter of 1 ?m or less, and/or a median diameter D50 by volume of 1 ?m or less.
    Type: Application
    Filed: November 18, 2021
    Publication date: March 10, 2022
    Inventors: Toru Arai, Hitoshi Kaneko
  • Patent number: 11208741
    Abstract: An object of the present invention is to provide a method for a carbon nanofiber composite, which can obtain a carbon nanofiber composite with high productivity and high activity, and which does not require removal of fluidizing materials or dispersing materials. The present invention also provides a carbon nanofiber composite having improved dispersibility. The method for producing the carbon nanofiber composite includes bringing at least one catalyst and at least one particulate carbon material into contact with at least one gas containing at least one gaseous carbon-containing compound while mechanically stirring the catalyst and the particulate carbon material in a reactor. The carbon nanofiber composite includes carbon nanofibers and at least one particulate carbon material, wherein the particulate carbon material has 70% by volume or more of particles with a particle diameter of 1 ?m or less, and/or a median diameter D50 by volume of 1 ?m or less.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: December 28, 2021
    Assignee: DENKA COMPANY LIMITED
    Inventors: Toru Arai, Hitoshi Kaneko
  • Patent number: 10836897
    Abstract: [Problem] To provide a thermoplastic resin composition for use in an organ model, wherein said composition has a softness closer to that of an organ, a high mechanical strength, and a texture close to an organ, exhibits excellent durability, and can be handled easily. [Solution] A resin composition for an organ model, said composition containing, as component (A), 100 parts by mass of a hydrogenated block copolymer having an MFR (measured at a temperature of 230° C. and a load of 2.16 kg) of 1 g/10 min. or less, and an oil as component (B). Moreover, the composition may also contain a cross copolymer as component (C), a polypropylene resin as component (D), and a filler as component (E).
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: November 17, 2020
    Assignee: DENKA COMPANY LIMITED
    Inventors: Akira Miyama, Yoshihiko Tsujimura, Toru Arai
  • Patent number: 10714746
    Abstract: A conductive composition for electrode is provided that is excellent in conductivity and dispersibility. Further, an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics are provided that use this conductive composition. A conductive composition for electrode, including: carbon nanofiber with a median diameter D50 value by volume from 0.1 to 8 pm; an active material; and a binder enables production of an electrode for lithium ion secondary battery with lower plate resistance and a lithium ion secondary battery excellent in rate characteristics.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: July 14, 2020
    Assignee: Denka Company Limited
    Inventors: Yoko Horikoshi, Toru Arai, Hitoshi Kaneko, Tatsuya Nagai, Ayumu Tsukamoto
  • Publication number: 20200160751
    Abstract: Disclosed is an ulcer model used to practice a procedure including hemorrhage arrest, the ulcer model including a model main body which includes upper and lower surfaces facing each other and a tubular simulated blood vessel path provided between the upper surface and the lower surface and having an inlet opening and an outlet opening. The upper surface includes a ring-shaped raised surface that rises in a thickness direction of the model main body and a simulated ulcer surface that is a recessed bottom surface surrounded by the raised surface. The simulated blood vessel path extends from a part other than the upper surface of the surfaces of the model main body to the simulated ulcer surface or an area in the vicinity of the inside thereof.
    Type: Application
    Filed: June 28, 2018
    Publication date: May 21, 2020
    Inventors: Akira MIYAMA, Toru ARAI, Takashi SASAKI
  • Patent number: 10629326
    Abstract: By using CNF excellent in dispersibility, conductivity, and crystallinity, a conductive polymer material having high conductivity even with a low CNF content and a shaped article thereof and a conductive polymer material with a less CNF content for same conductivity and a shaped article thereof are provided. A conductive polymer material with high conductivity is produced by using carbon nanofiber with a median diameter D50 value from 0.1 to 8 ?m, powder resistivity of 0.03 ?cm or less measured under a load of 9.8 MPa, and D/G from 0.5 to 1.3.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 21, 2020
    Assignee: Denka Company Limited
    Inventors: Hitoshi Kaneko, Toru Arai, Yoko Horikoshi, Ayumu Tsukamoto, Akira Miyama
  • Publication number: 20190330402
    Abstract: The purpose of the present invention is to provide: a cross-copolymer in which a residual catalyst component remains in a reduced amount and which has improved transparency, applicability to medical materials and yellowish discoloration resistance; and a method for producing the cross-copolymer.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 31, 2019
    Applicant: Denka Company Limited
    Inventors: Toru Arai, Ayumu Tsukamoto, Eri Sasaki
  • Patent number: 10458868
    Abstract: A bicycle crank arm assembly basically includes a bicycle crank arm and first to third detecting circuits. The first detecting circuit is configured to detect a force acting in a first direction. The second detecting circuit is configured to detect a force acting in a second direction. The third detecting circuit is configured to detect a moment. The first detecting circuit includes a first strain sensor that is mounted to an attachment surface. The second detecting circuit includes a second strain sensor that is mounted to the attachment surface. The third detecting circuit includes a third strain sensor that is mounted to the attachment surface.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: October 29, 2019
    Assignees: Shimano Inc., MinebeaMitsumi Inc.
    Inventors: Toshio Tetsuka, Fumiaki Yoshida, Shintaro Mori, Toru Arai, Kui Li, Tomoaki Watanuki
  • Publication number: 20180347073
    Abstract: An object of the present invention is to provide a method for a carbon nanofiber composite, which can obtain a carbon nanofiber composite with high productivity and high activity, and which does not require removal of fluidizing materials or dispersing materials. The present invention also provides a carbon nanofiber composite having improved dispersibility. The method for producing the carbon nanofiber composite includes bringing at least one catalyst and at least one particulate carbon material into contact with at least one gas containing at least one gaseous carbon-containing compound while mechanically stirring the catalyst and the particulate carbon material in a reactor. The carbon nanofiber composite includes carbon nanofibers and at least one particulate carbon material, wherein the particulate carbon material has 70% by volume or more of particles with a particle diameter of 1 ?m or less, and/or a median diameter D50 by volume of 1 ?m or less.
    Type: Application
    Filed: July 15, 2016
    Publication date: December 6, 2018
    Inventors: Toru Arai, Hitoshi Kaneko
  • Patent number: 10125207
    Abstract: The present invention addresses the problem of providing a cross-copolymer having excellent flexibility, heat resistance, cold resistance and mechanical properties. The present invention also addresses the problem of providing a resin composition which is prepared using the cross-copolymer, has excellent compatibility with polyolefin resins and aromatic resins, and has excellent flexibility, heat resistance and cold resistance.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: November 13, 2018
    Assignee: Denka Company Limited
    Inventors: Toru Arai, Tometomo Uchida, Ayumu Tsukamoto
  • Patent number: 10087557
    Abstract: Provided is a method for producing carbon nanofibers having excellent conductivity, crystallinity and dispersibility. A method for producing carbon nanofibers, which uses an activated species mainly composed of cobalt as a catalyst, while using carbon monoxide as a carbon source. The catalyst is obtained by having a carrier, which is composed of an oxide having a specific surface area of 0.01-5 m2/g and containing magnesium, support 3-90% by mass of the activated species. By controlling the reaction temperature, the carbon monoxide partial pressure and the gas flow rate of the carbon monoxide, CNF having more excellent conductivity, crystallinity and dispersibility can be produced, thereby obtaining carbon nanofibers having excellent conductivity, crystallinity and dispersibility.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 2, 2018
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hitoshi Kaneko, Toru Arai, Yoko Horikoshi, Ayumu Tsukamoto
  • Publication number: 20180273669
    Abstract: An object of the present invention is to provide a cross-copolymer having excellent softness and heat resistance which is useful as a thermoplastic elastomer, and provide a method for producing thereof. The present invention provides a method for producing a cross-copolymer comprising a coordination polymerization step and an anionic polymerization step, the cross-copolymer has a specific structure. The present invention also provides a cross-copolymer having excellent moldability, softness and heat resistance, which can be produced under the producing conditions satisfying that the molecular weight distribution of the copolymer obtained in the coordination polymerization step is in a specific range.
    Type: Application
    Filed: September 12, 2016
    Publication date: September 27, 2018
    Applicant: Denka Company Limited
    Inventor: Toru Arai