Patents by Inventor Kinji Asaka

Kinji Asaka 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: 11121646
    Abstract: An object of this invention is to create an actuator in which the amount of deformation is maintained and no displacement in the reverse direction occurs, even when a constant voltage is continuously applied for a long period of time. As a means for achieving the above object, the invention provides a conductive thin film comprising a polymer gel containing at least one organic molecule selected from the group consisting of electron-donating organic molecules and electron-withdrawing organic molecules, a nano-carbon material, an ionic liquid, and a polymer.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 14, 2021
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka, Kenichi Mitsumori, Nobuaki Haga
  • Patent number: 11084725
    Abstract: An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: August 10, 2021
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Ken Mukai, Kinji Asaka, Takeshi Saito, Motoo Yumura
  • Publication number: 20210071320
    Abstract: The purpose of the present disclosure is to provide a CNT fiber that is constituted of aligned carbon nanotubes (CNTs), is thin, has little irregularity in thickness, has excellent winding properties when undergoing coiling processing, and has superior conductivity. Provided is a CNT fiber constituted of carbon nanotubes (CNTs) having a thickness of 0.01 ?m-3 mm, having a coefficient of variation for irregularity in thickness of 0.2 or less, having a distribution rate a for deviation from roundness of 40% or greater, and a distribution rate b of 70% or greater. Also provided is a method for manufacturing the CNT fiber.
    Type: Application
    Filed: October 11, 2018
    Publication date: March 11, 2021
    Applicants: National Institute of Advanced Industrial Science and Technology, Asahi Kasei Kabushiki Kaisha
    Inventors: Ken Mukai, Shuhei Ikenaga, Kinji Asaka, Toru Morita, Yujin Motoyama, Yuta Saito
  • Patent number: 10801477
    Abstract: A conductive thin film is composed of a polymer gel including carbon nanotubes, an ionic liquid, and a polymer. At least one selected from the group consisting of fat and oil and a water repellent is included in the polymer gel or in a surface of the polymer gel.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 13, 2020
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka
  • Patent number: 10788307
    Abstract: The invention provides a sensor capable of detecting deformation. The deformation sensor has a structure in which an ion-conductive polymer layer is sandwiched between soft electrodes, wherein non-uniform ion distribution is generated in the ion-conductive polymer layer by deformation, thereby generating a potential difference between the electrodes.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: September 29, 2020
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, MITSUI CHEMICALS TOHCELLO, INC.
    Inventors: Kinji Asaka, Tetsuya Horiuchi, Zicai Zhu, Mitsuo Takase
  • Publication number: 20190356242
    Abstract: An object of this invention is to create an actuator in which the amount of deformation is maintained and no displacement in the reverse direction occurs, even when a constant voltage is continuously applied for a long period of time. As a means for achieving the above object, the invention provides a conductive thin film comprising a polymer gel containing at least one organic molecule selected from the group consisting of electron-donating organic molecules and electron-withdrawing organic molecules, a nano-carbon material, an ionic liquid, and a polymer.
    Type: Application
    Filed: June 13, 2019
    Publication date: November 21, 2019
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka, Kenichi Mitsumori, Nobuaki Haga
  • Patent number: 10367429
    Abstract: An object of this invention is to create an actuator in which the amount of deformation is maintained and no displacement in the reverse direction occurs, even when a constant voltage is continuously applied for a long period of time. As a means for achieving the above object, the invention provides a conductive thin film comprising a polymer gel containing at least one organic molecule selected from the group consisting of electron-donating organic molecules and electron-withdrawing organic molecules, a nano-carbon material, an ionic liquid, and a polymer.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: July 30, 2019
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka, Kenichi Mitsumori, Nobuaki Haga
  • Publication number: 20190210878
    Abstract: An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Ken MUKAI, Kinji ASAKA, Takeshi SAITO, Motoo YUMURA
  • Patent number: 10273157
    Abstract: An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: April 30, 2019
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Ken Mukai, Kinji Asaka, Takeshi Saito, Motoo Yumura
  • Patent number: 10199561
    Abstract: An electroconductive film for an actuator is formed from a gel composition including carbon nanofibers, an ionic liquid, and a polymer. The carbon nanofibers are produced with an aromatic mesophase pitch by melt spinning.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: February 5, 2019
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, ALPS ELECTRIC CO., LTD.
    Inventors: Kinji Asaka, Takushi Sugino, Soshi Shiraishi, Isao Takahashi, Tomomasa Takatsuka, Shinya Komura
  • Publication number: 20190010329
    Abstract: An object of the present invention is to provide an actuator that has improved performance. As a means for achieving this object, provided is a conductive thin film comprising a polymer gel containing a polyaniline (PANI), carbon nanohorns (CNH), carbon nanotubes (CNT), an ionic liquid, and a polymer, wherein the mass of the polyaniline is 10 to 50%, the mass of the carbon nanohorns is 10 to 50%, and the mass of the carbon nanotubes is 1 to 50% when the total mass of the polyaniline, the carbon nanohorns, and the carbon nanotubes is taken as 100%.
    Type: Application
    Filed: August 18, 2016
    Publication date: January 10, 2019
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka
  • Publication number: 20190003818
    Abstract: The present invention relates to a deformation sensor comprising a structure in which an ion-conductive polymer layer is sandwiched between soft electrodes, wherein non-uniform ion distribution is generated in the ion-conductive polymer layer by deformation, thereby generating a potential difference between the electrodes.
    Type: Application
    Filed: December 22, 2016
    Publication date: January 3, 2019
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, MITSUI CHEMICALS TOHCELLO, INC.
    Inventors: Kinji ASAKA, Tetsuya HORIUCHI, Zicai ZHU, Mitsuo TAKASE
  • Patent number: 9966525
    Abstract: An electroconductive film for an actuator is formed from a gel composition including carbon nanofibers, an ionic liquid, and a polymer. The carbon nanofibers are produced with an aromatic mesophase pitch by melt spinning.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: May 8, 2018
    Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, ALPS ELECTRIC CO., LTD.
    Inventors: Kinji Asaka, Takushi Sugino, Soshi Shiraishi, Isao Takahashi, Tomomasa Takatsuka, Shinya Komura
  • Patent number: 9873609
    Abstract: A polymer actuator element includes an electrolyte layer and electrode layers, in which the electrode layer includes an activated carbon nanofiber and a carbon nanohorn.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: January 23, 2018
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tomomasa Takatsuka, Isao Takahashi, Teppei Sugawara, Kenichi Mitsumori, Kinji Asaka, Takushi Sugino
  • Patent number: 9424960
    Abstract: A method for producing an aggregated thread structure includes (a) a process of dispersing carbon nanotube to a first solvent, which is water or a mixed solvent containing organic solvent and water, with a surfactant, to create a dispersion and (b) a process of injecting the dispersion, in which carbon nanotube is dispersed, to a condensing liquid, which is a second solvent that differs from the first solvent, to thereby aggregate and spin carbon nanotube. The aggregated thread structure containing carbon nanotube has: a bulk density of 0.5 g/cm3 or more; a weight reduction rate up to 450° C. of 50% or less; a G/D ratio for resonance Raman scattering measurement of 10 or more; and an electric conductivity of 50 S/cm or more.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: August 23, 2016
    Assignees: FURUKAWA ELECTRIC CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Hiroaki Rikihisa, Masato Tachibana, Michihiro Shimada, Kinji Asaka, Ken Mukai, Takushi Sugino
  • Publication number: 20160240770
    Abstract: An electroconductive film for an actuator is formed from a gel composition including carbon nanofibers, an ionic liquid, and a polymer. The carbon nanofibers are produced with an aromatic mesophase pitch by melt spinning.
    Type: Application
    Filed: March 22, 2016
    Publication date: August 18, 2016
    Applicants: National Institute of Advanced Industrial Science and Technology, NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, ALPS ELECTRIC CO., LTD.
    Inventors: Kinji Asaka, Takushi Sugino, Soshi Shiraishi, Isao Takahashi, Tomomasa Takatsuka, Shinya Komura
  • Publication number: 20160083257
    Abstract: An object of the present invention is to provide a CNT yarn having excellent conductivity and strength, and a method for producing the same. The present invention provides a drawn yarn comprising carbon nanotubes and having a drawing rate of 10 to 50%.
    Type: Application
    Filed: May 15, 2014
    Publication date: March 24, 2016
    Inventors: Ken Mukai, Kinji Asaka, Takeshi Saito, Motoo Yumura
  • Publication number: 20150298963
    Abstract: A polymer actuator element includes an electrolyte layer and electrode layers, in which the electrode layer includes an activated carbon nanofiber and a carbon nanohorn.
    Type: Application
    Filed: June 26, 2015
    Publication date: October 22, 2015
    Inventors: Tomomasa TAKATSUKA, Isao TAKAHASHI, Teppei SUGAWARA, Kenichi MITSUMORI, Kinji ASAKA, Takushi SUGINO
  • Publication number: 20150118500
    Abstract: A conductive thin film is composed of a polymer gel including carbon nanotubes, an ionic liquid, and a polymer. At least one selected from the group consisting of fat and oil and a water repellent is included in the polymer gel or in a surface of the polymer gel.
    Type: Application
    Filed: December 23, 2014
    Publication date: April 30, 2015
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka
  • Publication number: 20150061457
    Abstract: An object of this invention is to create an actuator in which the amount of deformation is maintained and no displacement in the reverse direction occurs, even when a constant voltage is continuously applied for a long period of time. As a means for achieving the above object, the invention provides a conductive thin film comprising a polymer gel containing at least one organic molecule selected from the group consisting of electron-donating organic molecules and electron-withdrawing organic molecules, a nano-carbon material, an ionic liquid, and a polymer.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 5, 2015
    Applicants: NATIONAL INSTITUTE OF ADVANCE INDUSTRIAL SCIENCE AND TECHNOLOGY, ALPS ELECTRIC CO., LTD.
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka, Kenichi Mitsumori, Nobuaki Haga