Patents by Inventor Tomomasa Takatsuka

Tomomasa Takatsuka 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: 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
  • 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
  • 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
  • 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
  • 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: 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
  • Patent number: 8951641
    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: July 5, 2012
    Date of Patent: February 10, 2015
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka
  • Publication number: 20130008160
    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: July 5, 2012
    Publication date: January 10, 2013
    Applicants: ALPS ELECTRIC CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takushi Sugino, Kinji Asaka, Isao Takahashi, Tomomasa Takatsuka
  • Publication number: 20130009514
    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: July 9, 2012
    Publication date: January 10, 2013
    Applicants: National Institute of Advanced Industrial Science and Technology, ALPS ELECTRIC CO., LTD., NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY
    Inventors: Kinji Asaka, Takushi Sugino, Soshi Shiraishi, Isao Takahashi, Tomomasa Takatsuka, Shinya Komura
  • Patent number: 6429919
    Abstract: A brighter and whiter reflector provides high reflection efficiency over a wide range of angles. An indenting tool is pressed against the surface of a matrix base material; the pressing operation is repeated while changing the position of the indenting tool on the surface of the base material for the matrix to successively form many pits, the inner surfaces of which are shaped like partial spheres, on the mold surface of the matrix base material so as to provide it as the matrix for forming the reflector. Then, a transfer mold having a mold surface which has a reversed pattern of the pits and projections of the mold surface of the matrix is made, and the mold surface of the transfer mold is transferred to the surface of the base material for the reflector to provide a reflector (1). Pits (4) of the reflector (1) are formed so that the depths the pits (4) range from 0.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: August 6, 2002
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tomomasa Takatsuka, Koichi Moue, Masao Ohkita, Tatsuya Moriike, Tetsushi Tanada, Akito Miura, Mitsuru Kano
  • Patent number: 6421106
    Abstract: A brighter and whiter reflector provides high reflection efficiency over a wide range of angles. An indenting tool is pressed against the surface of a matrix base material; the pressing operation is repeated while changing the position of the indenting tool on the surface of the base material for the matrix to successively form many pits, the inner surfaces of which are shaped like partial spheres, on the mold surface of the matrix base material so as to provide it as the matrix for forming the reflector. Then, a transfer mold having a mold surface which has a reversed pattern of the pits and projections of the mold surface of the matrix is made, and the mold surface of the transfer mold is transferred to the surface of the base material for the reflector to provide a reflector (1). Pits (4) of the reflector (1) are formed so that the depths the pits (4) range from 0.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: July 16, 2002
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tomomasa Takatsuka, Koichi Moue, Masao Ohkita, Tatsuya Moriike, Tetsushi Tanada, Akito Miura, Mitsuru Kano
  • Patent number: 6219120
    Abstract: A reflective type liquid crystal display of this invention comprises a reflector member having corrugated surface stored therein; an overcoat layer formed on the corrugated surface of the reflector member for making the corrugated surface flat; and a color filter layer formed on the overcoat layer, and wherein a thickness of the overcoat layer is more than twice of a depth of the concave part in the corrugated surface of the reflector member.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: April 17, 2001
    Assignee: Alps Electric Co., Ltd.
    Inventors: Yorihiko Sasaki, Mitsuru Kano, Kenji Omote, Yoshihiko Ishitaka, Mitsuo Ohizumi, Tomomasa Takatsuka
  • Patent number: 6193898
    Abstract: A plurality of reflectors respectively having the same rough reflecting surfaces are formed substantially simultaneously on a transparent substrate of a large area. A photosensitive resin film is formed on a surface of a transparent substrate. An embossing die having a rough working surface is pressed against a photosensitive resin part of the photosensitive resin film and the photosensitive resin part is irradiated with ultraviolet rays from below the transparent substrate to form a prehardened photosensitive resin part. Those steps are repeated to form a plurality of prehardened, embossed photosensitive resin parts on the transparent substrate, and then parts not prehardened of the photosensitive resin film are removed by etching. The prehardened, embossed photosensitive resin parts are heated for hardening, and a metal reflecting film is formed on the hardened embossed photosensitive resin parts to complete a plurality of reflectors.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: February 27, 2001
    Assignee: Alps Electric Co., Ltd.
    Inventors: Mitsuru Kano, Tomomasa Takatsuka, Kenji Omote
  • Patent number: 6141073
    Abstract: A reflective type liquid crystal display of this invention comprises a reflector member having corrugated surface stored therein; an overcoat layer formed on the corrugated surface of the reflector member for making the corrugated surface flat; and a color filter layer formed on the overcoat layer, and wherein a thickness of the overcoat layer is more than twice of a depth of the concave part in the corrugated surface of the reflector member.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: October 31, 2000
    Assignee: Alps Electric Co., Ltd.
    Inventors: Yorihiko Sasaki, Mitsuru Kano, Kenji Omote, Yoshihiko Ishitaka, Mitsuo Ohizumi, Tomomasa Takatsuka
  • Patent number: 6130736
    Abstract: A reflective type liquid crystal display of this invention comprises a reflector member having corrugated surface stored therein; an overcoat layer formed on the corrugated surface of the reflector member for making the corrugated surface flat; and a color filter layer formed on the overcoat layer, and wherein a thickness of the overcoat layer is more than twice of a depth of the concave part in the corrugated surface of the reflector member.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: October 10, 2000
    Assignee: Alps Electric Co., Ltd.
    Inventors: Yorihiko Sasaki, Mitsuru Kano, Kenji Omote, Yoshihiko Ishitaka, Mitsuo Ohizumi, Tomomasa Takatsuka