Patents by Inventor Daisuke Yokoyama

Daisuke Yokoyama 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: 10541630
    Abstract: A manufacturing method of a vibrator includes processing a tip of a contact part arranged on an elastic body of the vibrator by lapping or grinding processing so that part of the tip has a plane shape in part of a spherical shape.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yokoyama
  • Patent number: 10522574
    Abstract: A method for manufacturing a display device is provided. The method includes a step of forming a first layer over a first substrate, a terminal electrode over the first layer, a display element over the first layer, and a peeling layer overlapping with the terminal electrode, a step of forming a second layer over a second substrate, a step of attaching the first substrate to the second substrate with a bonding layer therebetween, a step of separating the first substrate from the first layer, a step of attaching a third substrate to the first layer, a step of separating the second substrate from the second layer together with part of the bonding layer, and a step of attaching a fourth substrate to the second layer. At least one of the first layer and the second layer includes an organic film.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: December 31, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Akihiro Chida, Tatsuya Sakuishi, Daiki Nakamura, Tomoya Aoyama, Kohei Yokoyama, Daisuke Kubota
  • Patent number: 10501865
    Abstract: A first object of the present invention is to provide a method for efficiently growing a nitride single crystal even under low pressure conditions. The present invention relates to a method for producing a nitride single crystal, comprising growing a nitride crystal on the surface of a seed crystal having a hexagonal crystal structure by setting a pressure in a reaction vessel having the seed crystal, a nitrogen-containing solvent, a mineralizer containing a fluorine atom, and a raw material placed therein to 5 to 200 MPa and performing control so that the nitrogen-containing solvent is in at least either a supercritical state or a subcritical state.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: December 10, 2019
    Assignees: Mitsubishi Chemical Corporation, Tohoku University, The Japan Steel Works, Ltd.
    Inventors: Tohru Ishiguro, Quanxi Bao, Chiaki Yokoyama, Daisuke Tomida, Shigefusa Chichibu, Rinzo Kayano, Mutsuo Ueda, Makoto Saito, Yuji Kagamitani
  • Patent number: 10495883
    Abstract: An image display device with which it is possible to visually recognize an image while securing the see-through property regardless of eye movements and changes in interpupillary distance, with which it is possible to display a large-size image with high quality, and which is small, has excellent wearability, and has an excellent external appearance.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: December 3, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Osamu Yokoyama, Masatoshi Yonekubo, Takashi Takeda, Daisuke Ishida, Mitsutaka Ide, Hidemitsu Sorimachi
  • Publication number: 20190348448
    Abstract: A display device in which a peripheral circuit portion has high operation stability is provided. The display device includes a first substrate and a second substrate. A first insulating layer is provided over a first surface of the first substrate. A second insulating layer is provided over a first surface of the second substrate. The first surface of the first substrate and the first surface of the second substrate face each other. An adhesive layer is provided between the first insulating layer and the second insulating layer. A protective film in contact with the first substrate, the first insulating layer, the adhesive layer, the second insulating layer, and the second substrate is formed in the vicinity of a peripheral portion of the first substrate and the second substrate.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Inventors: Shunpei YAMAZAKI, Yoshiharu HIRAKATA, Takashi HAMADA, Kohei YOKOYAMA, Yasuhiro JINBO, Tetsuji ISHITANI, Daisuke KUBOTA
  • Publication number: 20190312202
    Abstract: To provide a composition having a very low refractive index, an organic photoelectronic element using the composition, and simple methods for producing such a composition and an organic photoelectronic element. A composition comprising a fluorinated polymer, an organic semiconductor material and a dopant.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Applicants: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY, AGC Inc.
    Inventors: Daisuke YOKOYAMA, Takefumi ABE, Yasuhiro KUWANA
  • Publication number: 20190305226
    Abstract: To provide a layer such as a charge transport layer having a refractive index significantly lowered without impairing electrical conductivity and surface roughness, and a method for producing it. A deposited film composition obtained by co-depositing a fluorinated polymer having a saturated vapor pressure at 300° C. of at least 0.001 Pa and an organic semiconductor material.
    Type: Application
    Filed: June 4, 2019
    Publication date: October 3, 2019
    Applicants: National University Corporation Yamagata University, AGC Inc.
    Inventors: Daisuke YOKOYAMA, Takefumi ABE, Yasuhiro KUWANA
  • Publication number: 20190288205
    Abstract: To provide a charge transport layer excellent in the external quantum efficiency, and an organic photoelectronic element comprising the charge transport layer. A charge transport layer comprising a film containing a fluorinated polymer and a semiconductor material, wherein the film has a material composition such that ?Eth is within a range of from 0.010 to 0.080 MV/cm. An organic photoelectronic element comprising the charge transport layer.
    Type: Application
    Filed: June 4, 2019
    Publication date: September 19, 2019
    Applicants: AGC Inc., National University Corporation Yamagata University
    Inventors: Takefumi ABE, Yasuhiro Kuwana, Shigeki Hattori, Kaori Tsuruoka, Daisuke Yokoyama
  • Patent number: 10406141
    Abstract: The present invention provides a compound capable of being used as an active ingredient of an anti-cancer agent. To provide an anti-cancer agent with few side effects, an object of the present invention is to provide a compound capable of selectively inhibiting the target, i.e., DOCK1, or a salt thereof. The pyridinone compound of the present invention is represented by Formula (1): wherein R1 and R2 are the same or different, and each represents C1-6 alkyl; and R3 is a group represented by, for example, Formula (3) below: wherein R5 in the group represented by Formula (3) is hydrogen.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: September 10, 2019
    Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Yoshinori Fukui, Takehito Uruno, Motomu Kanai, Shigeki Matsunaga, Takahiro Shirai, Shigeyuki Yokoyama, Teruki Honma, Mutsuko Niino, Daisuke Takaya
  • Publication number: 20190267195
    Abstract: A solid electrolytic capacitor element that includes a porous body, a dielectric layer on a surface of the porous body, and a solid electrolyte layer on a surface of the dielectric layer. The porous body is made from a sintered body of a Ti-alloy-containing grain having a Ti—Zr—X multicomponent alloy on a surface thereof, where X is at least one valve metal element selected from Si, Hf, Y, Al, Mo, W, Ta, Nb, and V, and a composition of the Ti—Zr—X multicomponent alloy is Ti: 50 atm % to 80 atm %, Zr: 8 atm % to 32 atm %, and X: 1 atm % to 20 atm %.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Inventors: Daisuke Obara, Takeo Arakawa, Takeshi Furukawa, Yuji Yokoyama, Yoshihiro Fujita, Masahiro Matsuo, Hideo Ito
  • Patent number: 10381566
    Abstract: The present invention relates to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. An object of the present invention is to provide an organic semiconductor thin film having a dramatically reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and the electret material has a refractive index of 1.5 or lower.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 13, 2019
    Assignee: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Daisuke Yokoyama, Yasutaka Suzuki, Wataru Aita
  • Patent number: 10367014
    Abstract: A display device in which a peripheral circuit portion has high operation stability is provided. The display device includes a first substrate and a second substrate. A first insulating layer is provided over a first surface of the first substrate. A second insulating layer is provided over a first surface of the second substrate. The first surface of the first substrate and the first surface of the second substrate face each other. An adhesive layer is provided between the first insulating layer and the second insulating layer. A protective film in contact with the first substrate, the first insulating layer, the adhesive layer, the second insulating layer, and the second substrate is formed in the vicinity of a peripheral portion of the first substrate and the second substrate.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: July 30, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yoshiharu Hirakata, Takashi Hamada, Kohei Yokoyama, Yasuhiro Jinbo, Tetsuji Ishitani, Daisuke Kubota
  • Patent number: 10328652
    Abstract: The strip-winding method, includes: a first step of supplying a strip to a wound body including an inclined part; and a second step of moving a winding roller along an outer circumferential surface of the wound body within one plane, the winding roller being capable of pressing the strip on the wound body, and of winding the strip on the outer circumferential surface of the wound body. In the second step, the roller inclination angle of the rotational axis line of the winding roller with respect to the one plane is changed, and the roller inclination angle at the time the strip is wound around the inclined part is set to be greater than the roller inclination angle at the time the strip is wound around a maximum diameter position of the wound body.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: June 25, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yuusuke Araki, Masamu Ishizuki, Daisuke Yokoyama
  • Publication number: 20190175435
    Abstract: A muscular strength assisting apparatus includes a drive means held by a first attachment tool attached to a torso, and a transmission means for transmitting a force output by the drive means to a second attachment tool attached to an upper arm. The transmission means includes an output shaft member coupled to the second attachment tool, and a switching means capable of switching between transmission and interruption of a force from the drive means to the output shaft member. The switching means is disposed on a rear, upper or laterally outer side of the output shaft member.
    Type: Application
    Filed: June 23, 2017
    Publication date: June 13, 2019
    Applicant: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY
    Inventors: Daisuke SASAKI, Isao KIKUTANI, Kazuya YOKOYAMA
  • Publication number: 20180366650
    Abstract: The present invention relates to an organic charge transport layer having a low refractive index, and to an organic EL device, an organic semiconductor device, and an organic photoelectric device which are provided with the organic charge transport layer. An object of the present invention is to provide an organic semiconductor thin film having a dramatically reduced refractive index without impairing conductivity, by mixing a predetermined amount of an electret material into an organic semiconductor material. The organic charge transport layer according to the present invention is characterized by containing an organic semiconductor material and an electret material. It is preferable that the organic semiconductor material is a hole transport material and the electret material has a refractive index of 1.5 or lower.
    Type: Application
    Filed: June 17, 2016
    Publication date: December 20, 2018
    Applicant: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Daisuke YOKOYAMA, Yasutaka SUZUKI, Wataru AITA
  • Patent number: 10120158
    Abstract: A vibration-type actuator can be miniaturized and can stabilize a pressure state between a driven body and a vibration body. A pressurizing unit applies a pressure force between projections on the vibration body and the driven body. A piezoelectric device connected to the vibration body on a surface opposite to the projections moves the driven body by vibration occurring in the vibration body when a drive voltage is applied. The pressurizing unit includes an energizing member, its support member, and a transfer member. A length of a contact area between the projections and the driven body is shorter than a length of an area in which the transfer member transfers the pressure force from the energizing member to the vibration body and a length of a contact area between the energizing member and the support member, in a direction perpendicular to the moving direction and to a pressurizing direction by the pressurizing unit.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: November 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Oda, Masanori Takahashi, Makoto Shihoh, Daisuke Yokoyama
  • Publication number: 20170374721
    Abstract: An organic light emitting diode comprises a hole transport layer, an emissive layer, and an electron transport layer. The hole transport layer and optionally the electron transport layer is made of a material having a refractive index having a specific anisotropy.
    Type: Application
    Filed: December 2, 2015
    Publication date: December 28, 2017
    Inventors: Kristiaan NEYTS, Michiel CALLENS, Daisuke YOKOYAMA
  • Patent number: 9528026
    Abstract: An object is to provide a resin composition that has excellent dielectric properties, that yields a highly heat-resistant cured product, that provides a low viscosity when made into a varnish, and that has a high Tg and a high flame retardancy without containing halogen. The resin composition contains a polyarylene ether copolymer (A) that has an intrinsic viscosity, measured in methylene chloride at 25° C., of 0.03 to 0.12 dL/g and that has an average of 1.5 to 3 phenolic hydroxyl groups in molecular terminal position per molecule, a triphenylmethane-type epoxy resin (B) that has a softening point of 50 to 70° C., and a cure accelerator (C), wherein the content of the polyarylene ether copolymer (A) is 60 to 85 mass parts where the total of the polyarylene ether copolymer (A) and the epoxy resin (B) is 100 mass parts.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: December 27, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takashi Sagara, Hidetaka Kakiuchi, Keiko Kashihara, Yuki Kitai, Hirosuke Saito, Daisuke Yokoyama, Hiroaki Fujiwara
  • Patent number: 9530953
    Abstract: A vibration-type actuator includes a supporting mechanism functioning such that a reaction force from a base against a pressing force from a driven member to an elastic member is dispersed to a vibrating portion and a supported portion of the elastic member. The supported portion is supported by the base with a vibration-isolating member interposed therebetween.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: December 27, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yokoyama
  • Publication number: 20160368232
    Abstract: The strip-winding method, includes: a first step of supplying a strip to a wound body including an inclined part; and a second step of moving a winding roller along an outer circumferential surface of the wound body within one plane, the winding roller being capable of pressing the strip on the wound body, and of winding the strip on the outer circumferential surface of the wound body. In the second step, the roller inclination angle of the rotational axis line of the winding roller with respect to the one plane is changed, and the roller inclination angle at the time the strip is wound around the inclined part is set to be greater than the roller inclination angle at the time the strip is wound around a maximum diameter position of the wound body.
    Type: Application
    Filed: November 4, 2014
    Publication date: December 22, 2016
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yuusuke ARAKI, Masamu ISHIZUKI, Daisuke YOKOYAMA