Patents by Inventor Tomoyuki YAHAGI

Tomoyuki YAHAGI 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: 10816709
    Abstract: A light reflection film includes at least one light reflection layer RPRL in which a cholesteric liquid crystal phase of a right-handed helical structure having right circularly polarized light reflection ability is fixed; and at least one light reflection layer LPRL in which a cholesteric liquid crystal phase of a left-handed helical structure having left circularly polarized light reflection ability is fixed. A total of three or more layers of the light reflection layer(s) RPRL and the light reflection layer(s) LPRL are laminated. The light reflection layer(s) RPRL and the light reflection layer(s) LPRL laminated each have a selective reflection center wavelength shifted by an interval of 10 nm or more and 160 nm or less between two light reflection layers adjacent to each other.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: October 27, 2020
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Tomoyuki Hayasaki, Hitoshi Asami, Yoshiyuki Yahagi, Kouichi Tanaka
  • Patent number: 10525666
    Abstract: An optical laminate structure includes a light control laminate having at least one light reflection layer, a first quarter wave plate laminated on one of surfaces of the light reflection layer, and a second quarter wave plate laminated on another surface of the light reflection layer. The light reflection layer includes a right-handed circularly polarized light reflection layer or a left-handed circularly polarized light reflection layer, and an angle formed by a polarization axis of the S-polarized light or P-polarized light incident from a position inclined from an axis perpendicular to a surface of the light control laminate by 45° or more and 65° or less and a slow axis of the first quarter wave plate on a side to which the S-polarized light or P-polarized light is incident is 5° or more and less than 45°.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: January 7, 2020
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Tomoyuki Hayasaki, Hitoshi Asami, Yoshiyuki Yahagi, Chihiro Takahashi, Kouichi Tanaka
  • Publication number: 20190324180
    Abstract: A light reflection film includes at least one light reflection layer RPRL in which a cholesteric liquid crystal phase of a right-handed helical structure having right circularly polarized light reflection ability is fixed; and at least one light reflection layer LPRL in which a cholesteric liquid crystal phase of a left-handed helical structure having left circularly polarized light reflection ability is fixed. A total of three or more layers of the light reflection layer(s) RPRL and the light reflection layer(s) LPRL are laminated. The light reflection layer(s) RPRL and the light reflection layer(s) LPRL laminated each have a selective reflection center wavelength shifted by an interval of 10 nm or more and 160 nm or less between two light reflection layers adjacent to each other.
    Type: Application
    Filed: July 1, 2019
    Publication date: October 24, 2019
    Inventors: Tomoyuki Hayasaki, Hitoshi Asami, Yoshiyuki Yahagi, Kouichi Tanaka
  • Publication number: 20150097025
    Abstract: An electrode forming device has a flux application unit that applies flux on a substrate; a plurality of ball filling units that are arranged in series at a downstream side of the flux application unit and fill conductive balls on the substrate applied with the flux to form electrodes; and a first conveying device, a second conveying device, a first bypass conveyor and a second bypass conveyor that convey the substrate to one of the ball filling units and conveys the substrate in such a way as to bypass the other ball filling unit.
    Type: Application
    Filed: October 2, 2014
    Publication date: April 9, 2015
    Inventors: Hirokuni KURIHARA, Shoichi GUNJI, Takao KAWANO, Tomoyuki YAHAGI, Naoaki HASHIMOTO
  • Patent number: 8739700
    Abstract: In a printing system in which a roll film is rolled out to be printed by a printer and the film is rolled up after printing and drying, there is a possibility that wrinkles of the film are generated when printing, and printed materials are scratched because the printed film is positioned near the printer. Both end side of a suction stage in the film delivery direction are formed in a circular arc shape, and auxiliary stages are provided near the end portions to suck and hold a film, the auxiliary stages are allowed to be moved lower than a surface of the suction stage in the state to closely attach the film to the suction stage while applying tension to the film, and the film is sucked and held on the suction stage in the state to be printed after position adjustment to a surface of a mask.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: June 3, 2014
    Assignee: Hitachi Ltd
    Inventors: Akio Igarashi, Makoto Homma, Naoaki Hashimoto, Tomoyuki Yahagi
  • Publication number: 20110192295
    Abstract: In a printing system in which a roll film is rolled out to be printed by a printer and the film is rolled up after printing and drying, there is a possibility that wrinkles of the film are generated when printing, and printed materials are scratched because the printed film is positioned near the printer. Both end sides of a suction stage in the film delivery direction are formed in a circular arc shape, and auxiliary stages are provided near the end portions to suck and hold a film, the auxiliary stages are allowed to be moved lower than a surface of the suction stage in the state to closely attach the film to the suction stage while applying tension to the film, and the film is sucked and held on the suction stage in the state to be printed after position adjustment to a surface of a mask.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 11, 2011
    Inventors: Akio IGARASHI, Makoto HOMMA, Naoaki HASHIMOTO, Tomoyuki YAHAGI
  • Patent number: D686276
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: July 16, 2013
    Assignee: Hitachi Plant Technologies, Ltd.
    Inventors: Hirokuni Kurihara, Takao Kawano, Tomoyuki Yahagi, Makoto Homma