Patents by Inventor Ryou Sakurai

Ryou Sakurai 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: 11298976
    Abstract: In a bearing device for a vehicle wheel (1), a large-diameter section (2i) is formed on an outer side of a fitting cylinder section (2h), and a small-diameter section (2j) is formed on an inner side of the fitting cylinder section (2h). A cap member (8) is formed by bending a metal steel plate, and has a cover plate section (81) which closes the inner open end of an outer member (2) and a fitting section (82) which is fitted over the small-diameter section (2j). A tapered portion (83) based on the spring back angle ? of the fitting section (82) is provided at the outer peripheral edge of the outer end section of the fitting section (82).
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: April 12, 2022
    Assignee: NTN CORPORATION
    Inventors: Ryou Sakurai, Adumi Nobukawa
  • Publication number: 20210293278
    Abstract: In a bearing device for a vehicle wheel (1), a large-diameter section (2i) is formed on an outer side of a fitting cylinder section (2h), and a small-diameter section (2j) is formed on an inner side of the fitting cylinder section (2h). A cap member (8) is formed by bending a metal steel plate, and has a cover plate section (81) which closes the inner open end of an outer member (2) and a fitting section (82) which is fitted over the small-diameter section (2j). A tapered portion (83) based on the spring back angle ? of the fitting section (82) is provided at the outer peripheral edge of the outer end section of the fitting section (82).
    Type: Application
    Filed: August 6, 2019
    Publication date: September 23, 2021
    Inventors: Ryou SAKURAI, Adumi NOBUKAWA
  • Patent number: 9771102
    Abstract: In this steer-by-wire steering reaction force control device, a steering controller is provided with: a turning reaction force estimation unit configured to calculate an estimated value of a turning reaction force or a parameter representing vehicle behavior from a vehicle motion model; and a comparison unit configured to compare the estimated value calculated by the turning reaction force estimation unit with a value detected by a turning reaction force sensor, and configured to select either one of the estimated value and the detected value in accordance with a predetermined condition. Further, a steering reaction force generation unit is provided that is configured to use the estimated value or the detected value selected by the comparison unit for generation of a steering reaction force.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: September 26, 2017
    Assignee: NTN CORPORATION
    Inventor: Ryou Sakurai
  • Publication number: 20150232122
    Abstract: In this steer-by-wire steering reaction force control device, a steering controller is provided with: a turning reaction force estimation unit configured to calculate an estimated value of a turning reaction force or a parameter representing vehicle behavior from a vehicle motion model; and a comparison unit configured to compare the estimated value calculated by the turning reaction force estimation unit with a value detected by a turning reaction force sensor, and configured to select either one of the estimated value and the detected value in accordance with a predetermined condition. Further, a steering reaction force generation unit is provided that is configured to use the estimated value or the detected value selected by the comparison unit for generation of a steering reaction force.
    Type: Application
    Filed: August 26, 2013
    Publication date: August 20, 2015
    Applicant: NTN CORPORATION
    Inventor: Ryou Sakurai
  • Patent number: 7646358
    Abstract: In an image display device which has an image display panel, in which two or more groups of particles or liquid powders having different colors and different charge characteristics are sealed between opposed two substrates, at least one of two substrates being transparent, and, in which the particles or the liquid powders, to which an electrostatic field produced by a pair of electrodes provided on one substrate or both substrates respectively is applied, are made to move so as to display an image, a chip for transmitting a drive signal to the image display panel is arranged in the substrate (first aspect of the invention), or, the two substrates are constructed by a transparent substrate and the pair of electrodes are constructed by a transparent electrode (second aspect of the invention).
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: January 12, 2010
    Assignee: Bridgestone Corporation
    Inventors: Reiji Hattori, Itsuo Tanuma, Yoshitomo Masuda, Norio Nihei, Ryou Sakurai, Hajime Tamura, Hirotaka Yamazaki
  • Patent number: 7535539
    Abstract: An image display device which comprises an image display panel, in which particles or liquid powders as image display media are sealed in cells formed in an isolated manner from one another by partition walls between two opposed substrates, at least one of two substrates being transparent, and, in which the particles or the liquid powders, to which an electrostatic field is applied, are made to move so as to display an image, is characterized in that: (1) the partition walls are manufactured by a photolithography method, and a shape of the partition wall is a taper shape such that a width of an end portion at a side of a rear substrate is larger than that at a side of a front substrate; (3-1) a plurality of cells are arranged in such a manner that they do not correspond one for one to the positions of pixels for displaying the image; (3-2) a ratio of cell area/pixel area is formed to be smaller than 4; and (2) the image display panel is manufactured by: forming a first layer made of photosensitive color compo
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: May 19, 2009
    Assignee: Bridgestone Corporation
    Inventors: Ryou Sakurai, Hidetoshi Hiraoka, Taichi Kobayashi, Takanori Shoji, Hajime Tamura, Shinichi Kita
  • Patent number: 7495819
    Abstract: In the case of filling and setting the liquid powders or the particles in a plurality of cells formed by the partition walls on the substrate, the method includes the steps of: setting a nozzle at an upper portion of a container; setting the substrate, on which the partition walls are arranged, at a lower portion of the container; scattering the liquid powders or the particles dispersed in a gas from the nozzle arranged at the upper portion in the container; and filling the liquid powders or the particles in the cells on the substrate arranged at the lower portion in the container.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: February 24, 2009
    Assignee: Bridgestone Corporation
    Inventors: Ryou Sakurai, Kazuyoshi Akuzawa, Hirotaka Yamazaki, Hiroyuki Anzai, Hajime Kitano, Kazuya Murata, Gaku Yakushiji, Norihiko Kaga, Taichi Kobayashi, Toshiaki Arai, Yoshitomo Masuda
  • Publication number: 20070097336
    Abstract: An image display device which comprises an image display panel, in which particles or liquid powders as image display media are sealed in cells formed in an isolated manner from one another by partition walls between two opposed substrates, at least one of two substrates being transparent, and, in which the particles or the liquid powders, to which an electrostatic field is applied, are made to move so as to display an image, is characterized in that: (1) the partition walls are manufactured by a photolithography method, and a shape of the partition wall is a taper shape such that a width of an end portion at a side of a rear substrate is larger than that at a side of a front substrate; (3-1) a plurality of cells are arranged in such a manner that they do not correspond one for one to the positions of pixels for displaying the image; (3-2) a ratio of cell area/pixel area is formed to be smaller than 4; and (2) the image display panel is manufactured by: forming a first layer made of photosensitive color compo
    Type: Application
    Filed: August 4, 2004
    Publication date: May 3, 2007
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Ryou Sakurai, Hidetoshi Hiraoka, Taichi Kobayashi, Takanori Shoji, Hajime Tamura, Shinichi Kita
  • Publication number: 20060231401
    Abstract: In the case of filling and setting the liquid powders or the particles in a plurality of cells formed by the partition walls on the substrate, the method includes the steps of: setting a nozzle at an upper portion of a container; setting the substrate, on which the partition walls are arranged, at a lower portion of the container; scattering the liquid powders or the particles dispersed in a gas from the nozzle arranged at the upper portion in the container; and filling the liquid powders or the particles in the cells on the substrate arranged at the lower portion in the container.
    Type: Application
    Filed: December 17, 2003
    Publication date: October 19, 2006
    Inventors: Ryou Sakurai, Kazuyoshi Akuzawa, Hirotaka Yamazaki, Hiroyuki Anzai, Hajime Kitano, Kazuya Murata, Gaku Yakushiji, Norihiko Kaga, Taichi Kobayashi, Toshiaki Arai, Yoshitomo Masuda
  • Publication number: 20060209008
    Abstract: An image display device according to first to third aspects of the invention has an image display panel, in which two or more groups of particles having different colors and different charge characteristics are sealed between two substrates, at least one of two substrates being transparent, and, in which the particles, to which an electrostatic field produced by a pair of electrodes provided on respective substrates is applied, are made to fly and move so as to display an image. In the first aspect of the invention, micro-concave portions and/or micro-convex portions are provided to a part of or an overall of a surface of the electrode (first embodiment) or micro-cutout holes are provided to a part of or an overall of a surface of the electrode (second embodiment).
    Type: Application
    Filed: April 17, 2003
    Publication date: September 21, 2006
    Applicant: Bridgestone Corporation
    Inventors: Norio Nihei, Hajime Kitano, Koji Takagi, Gaku Yakushiji, Kazuya Murata, Ryou Sakurai, Yoshinori Iwabuchi, Hirotaka Yamazaki, Yoshitomo Masuda, Reiji Hattori
  • Publication number: 20060087479
    Abstract: In a first aspect of the invention, an image display device, in which one or more groups of particles or liquid powders are sealed between opposed two substrates, at least one of two substrates being transparent, and, in which the particles or the liquid powders, to which an electrostatic field produced by two groups of electrodes having different potentials is applied, are made to move so as to display an image, has a construction such that a member for transmitting a signal, which is applied to circuits for an image display, is provided to the substrate by means of an anisotropic conductive film and members such as the electrode are provided to a substrate opposed to a transparent substrate.
    Type: Application
    Filed: June 20, 2003
    Publication date: April 27, 2006
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Ryou Sakurai, Hajime Kitano, Norio Nihei, Kazuya Murata, Gaku Yakushiji, Norihiko Kaga, Toshiaki Arai, Yoshitomo Masuda, Hirotaka Yamazaki, Hidefumi Kotsubo, Masato Yoshikawa, Shingo Oono, Yoshinori Iwabuchi
  • Publication number: 20060087489
    Abstract: An image display device constructed by: an image display means for displaying an image by moving chargeable particles arranged between electrodes by means of a voltage applied to the electrodes; and a light emission means for emitting a light to an image display surface of the image display means (first aspect of the invention).
    Type: Application
    Filed: July 16, 2003
    Publication date: April 27, 2006
    Inventors: Ryou Sakurai, Maki Masutani, Hare Tazawa, Hajime Kitano, Norio Nihei, Hirotaka Yamazaki, Yoshitomo Masuda, Itsuo Tanuma
  • Publication number: 20050285500
    Abstract: In an image display device which has an image display panel, in which two or more groups of particles or liquid powders having different colors and different charge characteristics are sealed between opposed two substrates, at least one of two substrates being transparent, and, in which the particles or the liquid powders, to which an electrostatic field produced by a pair of electrodes provided on one substrate or both substrates respectively is applied, are made to move so as to display an image, a chip for transmitting a drive signal to the image display panel is arranged in the substrate (first aspect of the invention), or, the two substrates are constructed by a transparent substrate and the pair of electrodes are constructed by a transparent electrode (second aspect of the invention).
    Type: Application
    Filed: July 8, 2003
    Publication date: December 29, 2005
    Inventors: Reiji Hattori, Itsuo Tanuma, Yoshitomo Masuda, Norio Nihei, Ryou Sakurai, Hajime Tamura, Hirotaka Yamazaki
  • Patent number: 5932339
    Abstract: The present invention relates to an anisotropically electricity-conductive film obtainable by dispersing in an adhesive agent electrically conductive particles, the adhesive agent being a curable adhesive agent comprising as a major component at least one polymer selected from the group consisting of an ethylene-vinyl acetate copolymer; a copolymer of ethylene, vinyl acetate and an acrylate and/or methacrylate monomer; a copolymer of ethylene, vinyl acetate and maleic acid and/or maleic anhydride; a copolymer of ethylene, an acrylate and/or methacrylate monomer and maleic acid and/or maleic anhydride; and an ionomer resin wherein molecules of an ethylene-methacrylic acid copolymer are linked with each other through a metal ion.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: August 3, 1999
    Assignee: Bridgestone Corporation
    Inventors: Ryou Sakurai, Tasuku Saito, Hidefumi Kotsubo