Patents by Inventor Toshihiko Nakagawa

Toshihiko Nakagawa 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: 11185341
    Abstract: A catheter according to an embodiment of the present disclosure includes a mesh member, a first hollow shaft, a front end tip, a guiding film, and a core wire. The mesh member has a tubular shape and is radially expandable and contractable. The guiding film is formed with a stretchable material and is disposed on the mesh member, the guiding film having a front end located between a base end of the front end tip and a front end of the first hollow shaft. A thickness of a base end of the guiding film is larger than a thickness of the front end of the guiding film.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: November 30, 2021
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Kizuku Kuniyasu, Tomoya Sawata, Fumiyoshi Oshima, Yuta Nakagawa, Toshihiko Tsukamoto
  • Patent number: 11147573
    Abstract: A catheter according to an embodiment of the present disclosure includes a mesh member, a first hollow shaft, a front end tip, a guiding film, a second hollow shaft, and a core wire. The mesh member has a tubular shape and is radially expandable and contractable. The guiding film is disposed on the mesh member and has a front end located between a base end of the front end tip and a front end of the first hollow shaft. A thickness of the front end of the guiding film is larger than a thickness of a portion where a thickness of the guiding film is the smallest.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: October 19, 2021
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Yuta Nakagawa, Tomoya Sawata, Kizuku Kuniyasu, Fumiyoshi Oshima, Toshihiko Tsukamoto
  • Patent number: 10865269
    Abstract: A polyisocyanate composition contains a modified product of xylylene diisocyanate and a modified product of pentamethylene diisocyanate, and/or a modified product of the xylylene diisocyanate and the pentamethylene diisocyanate. The ratio of the pentamethylene diisocyanate with respect to the total amount of the xylylene diisocyanate and the pentamethylene diisocyanate is 30 mol % or more and 80 mol % or less.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 15, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Toshihiko Nakagawa, Aya Nakagawa, Shinji Kiyono, Hirokazu Morita, Satoshi Yamasaki
  • Patent number: 10822531
    Abstract: A two-component curable solventless-type laminate adhesive contains a polyisocyanate component and a polyol component. The polyisocyanate component contains a derivative of a pentamethylene diisocyanate, the derivative of the pentamethylene diisocyanate contains an isocyanurate group and an allophanate group, and the content ratio of the isocyanurate group with respect to 100 moles of the total amount of the isocyanurate group and the allophanate group is 60 moles or more and 99 moles or less.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: November 3, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Junichi Nakagawa, Akihiro Imai, Kazuhiro Ando, Toshihiko Nakagawa, Hirokazu Morita, Satoshi Yamasaki
  • Patent number: 10689477
    Abstract: A polyisocyanate composition contains a modified product of xylylene diisocyanate and a modified product of pentamethylene diisocyanate, and/or a modified product of the xylylene diisocyanate and the pentamethylene diisocyanate. The ratio of the pentamethylene diisocyanate with respect to the total amount of the xylylene diisocyanate and the pentamethylene diisocyanate is 5 mol % or more and 40 mol % or less.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: June 23, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Toshihiko Nakagawa, Aya Nakagawa, Shinji Kiyono, Hirokazu Morita, Satoshi Yamasaki
  • Patent number: 10689481
    Abstract: A polyisocyanate composition contains a modified product of xylylene diisocyanate and a modified product of pentamethylene diisocyanate, and/or a modified product of the xylylene diisocyanate and the pentamethylene diisocyanate. The ratio of the pentamethylene diisocyanate with respect to the total amount of the xylylene diisocyanate and the pentamethylene diisocyanate is 60 mol % or more and 95 mol % or less.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: June 23, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Toshihiko Nakagawa, Aya Nakagawa, Shinji Kiyono, Hirokazu Morita, Satoshi Yamasaki
  • Publication number: 20200048467
    Abstract: The polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group with alcohol, wherein the alcohol contains at least one oxyethylene-containing alcohol containing an oxyethylene group, and at least one oxyethylene-noncontaining alcohol containing no oxyethylene group, the at least one oxyethylene-noncontaining alcohol has a solubility parameter of 11.20 (cal/cm3)1/2 or less.
    Type: Application
    Filed: June 20, 2017
    Publication date: February 13, 2020
    Inventors: Tatsuya YAMASHITA, Toshihiko NAKAGAWA, Shinji KIYONO, Kazuki SAKATA, Hirokazu MORITA, Shigeru MIO, Satoshi YAMASAKI
  • Publication number: 20190338121
    Abstract: In the polyurethane resin of a reaction product of a polyisocyanate component and a polyol component, the polyisocyanate component contains an aliphatic polyisocyanate derivative, the aliphatic polyisocyanate derivative has an isocyanurate group and an allophanate group, and an allophanate group content relative to 100 mol of the isocyanurate group of 10 mol or more and 90 mol or less, the polyol component contains polyoxyalkylene triol and/or polyestertriol with a hydroxyl number of 100 mgKOH/g or more and 600 mgKOH/g or less, and polyoxyalkylene diol and/or polyesterdiol with a hydroxyl number of 100 mgKOH/g or more and 300 mgKOH/g or less.
    Type: Application
    Filed: July 26, 2017
    Publication date: November 7, 2019
    Inventors: Toshihiko NAKAGAWA, Tatsuya YAMASHITA, Hirokazu MORITA, Satoshi YAMASAKI
  • Publication number: 20190292306
    Abstract: [Problem] To provide polyurethane foam excellent in air permeability and laundry durability, an apparel material, a brassiere pad, a brassiere cup, and a method for producing polyurethane foam. [Solution] In polyurethane foam of a reaction/foaming product of a polyisocyanate component containing an aliphatic polyisocyanate derivative and a polyol component, the derivative has an isocyanate group concentration of 25 mass % or less, the derivative contains an isocyanurate derivative of aliphatic polyisocyanate and an allophanate derivative of aliphatic polyisocyanate, the allophanate derivative is a reaction product of aliphatic polyisocyanate and monohydric alcohol, the allophanate group content relative to a total amount of the polyisocyanate component is 10 mol % to 80 mol %, and the uretdione group content relative to a total amount of the polyisocyanate component is less than 10 mol %.
    Type: Application
    Filed: November 13, 2017
    Publication date: September 26, 2019
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hirokazu MORITA, Hiroshi KANAYAMA, Minoru WATANABE, Toshihiko NAKAGAWA, Satoshi YAMASAKI
  • Patent number: 10392528
    Abstract: A polyisocyanate composition includes at least a pentamethylenediisocyanate derivative. The polyisocyanate composition contains 5 mass % or more and 95 mass % or less of a uretdione derivative composed of an isocyanate bimolecular-product of pentamethylenediisocyanate.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: August 27, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Toshihiko Nakagawa, Aya Nakagawa, Shinji Kiyono, Takashi Kanno, Hirokazu Morita, Satoshi Yamasaki
  • Patent number: 10227468
    Abstract: Disclosed is a polyurethane resin which is obtained by a reaction between a polyisocyanate component, which contains 1,4-bis(isocyanatomethyl)cyclohexane including not less than 80% by mole of trans isomers, and an active hydrogen compound component.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: March 12, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Goro Kuwamura, Toshihiko Nakagawa, Daisuke Hasegawa, Satoshi Yamasaki
  • Publication number: 20190010372
    Abstract: A two-component curable solventless-type laminate adhesive contains a polyisocyanate component and a polyol component. The polyisocyanate component contains a derivative of a pentamethylene diisocyanate, the derivative of the pentamethylene diisocyanate contains an isocyanurate group and an allophanate group, and the content ratio of the isocyanurate group with respect to 100 moles of the total amount of the isocyanurate group and the allophanate group is 60 moles or more and 99 moles or less.
    Type: Application
    Filed: February 16, 2017
    Publication date: January 10, 2019
    Inventors: Junichi NAKAGAWA, Akihiro IMAI, Kazuhiro ANDO, Toshihiko NAKAGAWA, Hirokazu MORITA, Satoshi YAMASAKI
  • Patent number: 10081703
    Abstract: Disclosed is a polymerizable composition for an optical material containing polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2); and polythiol (b) having a di- or higher functional thiol group, in which the modified aliphatic polyisocyanate (a2) is contained in the polyisocyanate (a) in the amount of less than or equal to 60 weight %.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: September 25, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Hidetaka Tsukada, Shinsuke Ito, Naoyuki Kakinuma, Kenichi Goto, Toshihiko Nakagawa, Satoshi Yamasaki
  • Publication number: 20180208720
    Abstract: In a polyurethane gel 1 including a gel layer 2 and a coat layer 3 covering the gel layer 2, the gel layer 2 is produced by allowing at least aliphatic polyisocyanate having an average functionality of more than 2.0 to react with polyol having an average functionality of 3.0 or less, and the coat layer 3 is produced by allowing at least aliphatic diisocyanate and/or alicyclic diisocyanate to react with bifunctional active hydrogen compound.
    Type: Application
    Filed: July 8, 2016
    Publication date: July 26, 2018
    Inventors: Daisuke HASEGAWA, Masakazu KAGEOKA, Toshihiko NAKAGAWA, Goro KUWAMURA, Hirokazu MORITA, Satoshi YAMASAKI
  • Patent number: 10011677
    Abstract: A polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group and alcohols, wherein in an infrared absorption spectrum, the intensity ratio (IRCI/IRUI+U) of absorbance IRCI at or near 2120 cm?1 due to stretching vibration of the carbodiimide group relative to absorbance IRUI+U at or near 1720 cm?1 due to stretching vibration of the uretonimine group and urethane group is 1.5 or more and 4.5 or less.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: July 3, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Tatsuya Yamashita, Toshihiko Nakagawa, Shinji Kiyono, Aya Nakagawa, Hirokazu Morita, Shigeru Mio, Satoshi Yamasaki, Kazuki Sakata
  • Publication number: 20180179317
    Abstract: A polyisocyanate composition contains a modified product of xylylene diisocyanate and a modified product of pentamethylene diisocyanate, and/or a modified product of the xylylene diisocyanate and the pentamethylene diisocyanate. The ratio of the pentamethylene diisocyanate with respect to the total amount of the xylylene diisocyanate and the pentamethylene diisocyanate is 5 mol % or more and 40 mol % or less.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 28, 2018
    Inventors: Toshihiko NAKAGAWA, Aya NAKAGAWA, Shinji KIYONO, Hirokazu MORITA, Satoshi YAMASAKI
  • Publication number: 20180171065
    Abstract: A polyisocyanate composition contains a modified product of xylylene diisocyanate and a modified product of pentamethylene diisocyanate, and/or a modified product of the xylylene diisocyanate and the pentamethylene diisocyanate. The ratio of the pentamethylene diisocyanate with respect to the total amount of the xylylene diisocyanate and the pentamethylene diisocyanate is 30 mol % or more and 80 mol % or less.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 21, 2018
    Inventors: Toshihiko NAKAGAWA, Aya NAKAGAWA, Shinji KIYONO, Hirokazu MORITA, Satoshi YAMASAKI
  • Publication number: 20180162986
    Abstract: A polyisocyanate composition contains a modified product of xylylene diisocyanate and a modified product of pentamethylene diisocyanate, and/or a modified product of the xylylene diisocyanate and the pentamethylene diisocyanate. The ratio of the pentamethylene diisocyanate with respect to the total amount of the xylylene diisocyanate and the pentamethylene diisocyanate is 60 mol % or more and 95 mol % or less.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 14, 2018
    Inventors: Toshihiko NAKAGAWA, Aya NAKAGAWA, Shinji KIYONO, Hirokazu MORITA, Satoshi YAMASAKI
  • Publication number: 20180148533
    Abstract: A polycarbodiimide composition is a reaction product of polyisocyanate having a primary isocyanate group and alcohols, wherein in an infrared absorption spectrum, the intensity ratio (IRCI/IRUI+U) of absorbance IRCI at or near 2120 cm?1 due to stretching vibration of the carbodiimide group relative to absorbance IRUI+U at or near 1720 cm?1 due to stretching vibration of the uretonimine group and urethane group is 1.5 or more and 4.5 or less.
    Type: Application
    Filed: January 5, 2017
    Publication date: May 31, 2018
    Inventors: Tatsuya YAMASHITA, Toshihiko NAKAGAWA, Shinji KIYONO, Aya NAKAGAWA, Hirokazu MORITA, Shigeru MIO, Satoshi YAMASAKI, Kazuki SAKATA
  • Publication number: 20180142123
    Abstract: A polyisocyanate composition includes at least a pentamethylenediisocyanate derivative. The polyisocyanate composition contains 5 mass % or more and 95 mass % or less of a uretdione derivative composed of an isocyanate bimolecular-product of pentamethylenediisocyanate.
    Type: Application
    Filed: May 9, 2016
    Publication date: May 24, 2018
    Inventors: Toshihiko NAKAGAWA, Aya NAKAGAWA, Shinji KIYONO, Takashi KANNO, Hirokazu MORITA, Satoshi YAMASAKI