Patents by Inventor Takeo Yamamoto

Takeo Yamamoto 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: 11407925
    Abstract: An adhesive sheet of an embodiment of the present disclosure is an adhesive sheet including: a rigid resin film having a thickness of 80 micrometers to 500 micrometers, and a first pressure sensitive adhesive layer being disposed on or above a surface of the rigid resin film, wherein the first pressure sensitive adhesive layer includes elastic resin microspheres having a volume average particle diameter of 110 micrometers or greater and a tacky binder, and the first pressure sensitive adhesive layer has an uneven surface due to the presence of the microspheres.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: August 9, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Hidetoshi Abe, Kengo Imamura, Katsuya Ono, Yoshihiko Takeda, Takeo Yamamoto
  • Patent number: 11402197
    Abstract: A structure for measuring a distance on the basis of the principle of triangulation is simplified. A distance measuring module includes a diffractive optical element, an imaging element, and a distance measuring unit. The diffractive optical element emits a predetermined number of line light beams. The imaging element images the line light beams with which the subject is irradiated. The measuring unit measures a distance from the subject by using triangulation on the basis of the imaged line light beams. Thus, by imaging the line light beams emitted via the diffractive optical element, the distance from the subject is measured with a simple structure.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 2, 2022
    Assignees: Sony Corporation, Sony Semiconductor Solutions Corporation
    Inventors: Kouji Mabuchi, Takeo Arai, Nobuhiro Kihara, Kazunori Yamamoto, Go Asayama
  • Patent number: 11243065
    Abstract: Provided is a rotation angle detection device configured to detect a rotation angle of a magnetic field generation source, based on a magnetic field in at least two directions detected by a magnetic field detection device. The rotation angle detection device includes a correction value calculation unit configured to calculate a correction value of the rotation angle; an angle output unit configured to output an angle output signal indicative of the rotation angle of the magnetic field generation source, based on a magnetic field detection signal to be output from the magnetic field detection device and the correction value; and a filter unit capable of selecting a first filter characteristic, which is to be used for outputting the angle output signal, and a second filter characteristic, which is to be used for calculating the correction value and is different from the first filter characteristic.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: February 8, 2022
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Takeo Yamamoto, Satoshi Fukase
  • Patent number: 11243095
    Abstract: To reduce the error in a rotational angle detected by a rotational angle detection apparatus, provided is a rotational angle detection apparatus that detects a rotational angle of a magnetic field generation source, including a magnetic field detection apparatus that detects magnetic field components in at least two directions, and outputs resulting detection data; a correction value calculating section that calculates correction values for correcting an angle error of the rotational angle, based on a steady-state error that does not depend on rotation of the magnetic field generation source; and an angle computing section that calculates the rotational angle of the magnetic field generation source based on the detection data and the correction values, and outputs an angle signal indicating the rotational angle.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: February 8, 2022
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Takeo Yamamoto, Ryuta Tanaka, Satoshi Fukase, Kenta Sogo
  • Patent number: 11193794
    Abstract: A rotation angle sensor includes first and second magnetic detection elements disposed at positions where a first disposition angle relative to a magnet center is greater than 0 degrees and less than 90 degrees and configured to acquire magnetic field in a first direction varying by a rotation of a magnet; third and fourth magnetic detection elements configured to acquire the magnetic field in a second direction; a calculation signal generator configured to output a first magnetic field calculation signal, based on outputs of the first and second magnetic detection elements, and configured to output a second magnetic field calculation signal, based on outputs of the third and fourth magnetic detection elements; and an angle signal generator configured to generate and output an angle signal indicative of a rotation angle of the magnet, based on the first and second magnetic field calculation signal.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: December 7, 2021
    Assignee: Asahi Kasei Microdevices Corporation
    Inventors: Kenta Sogo, Takeo Yamamoto
  • Publication number: 20210009863
    Abstract: An adhesive sheet of an embodiment of the present disclosure is an adhesive sheet including: a rigid resin film having a thickness of 80 micrometers to 500 micrometers, and a first pressure sensitive adhesive layer being disposed on or above a surface of the rigid resin film, wherein the first pressure sensitive adhesive layer includes elastic resin microspheres having a volume average particle diameter of 110 micrometers or greater and a tacky binder, and the first pressure sensitive adhesive layer has an uneven surface due to the presence of the microspheres.
    Type: Application
    Filed: April 4, 2018
    Publication date: January 14, 2021
    Inventors: Hidetoshi Abe, Kengo Imamura, Katsuya Ono, Yoshihiko Takeda, Takeo Yamamoto
  • Publication number: 20200400463
    Abstract: A rotation angle sensor includes first and second magnetic detection elements disposed at positions where a first disposition angle relative to a magnet center is greater than 0 degrees and less than 90 degrees and configured to acquire magnetic field in a first direction varying by a rotation of a magnet; third and fourth magnetic detection elements configured to acquire the magnetic field in a second direction; a calculation signal generator configured to output a first magnetic field calculation signal, based on outputs of the first and second magnetic detection elements, and configured to output a second magnetic field calculation signal, based on outputs of the third and fourth magnetic detection elements; and an angle signal generator configured to generate and output an angle signal indicative of a rotation angle of the magnet, based on the first and second magnetic field calculation signal.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 24, 2020
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventors: Kenta SOGO, Takeo YAMAMOTO
  • Publication number: 20200116470
    Abstract: Provided is a rotation angle detection device configured to detect a rotation angle of a magnetic field generation source, based on a magnetic field in at least two directions detected by a magnetic field detection device. The rotation angle detection device includes a correction value calculation unit configured to calculate a correction value of the rotation angle; an angle output unit configured to output an angle output signal indicative of the rotation angle of the magnetic field generation source, based on a magnetic field detection signal to be output from the magnetic field detection device and the correction value; and a filter unit capable of selecting a first filter characteristic, which is to be used for outputting the angle output signal, and a second filter characteristic, which is to be used for calculating the correction value and is different from the first filter characteristic.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 16, 2020
    Inventors: Takeo YAMAMOTO, Satoshi FUKASE
  • Publication number: 20190316939
    Abstract: To reduce the error in a rotational angle detected by a rotational angle detection apparatus, provided is a rotational angle detection apparatus that detects a rotational angle of a magnetic field generation source, including a magnetic field detection apparatus that detects magnetic field components in at least two directions, and outputs resulting detection data; a correction value calculating section that calculates correction values for correcting an angle error of the rotational angle, based on a steady-state error that does not depend on rotation of the magnetic field generation source; and an angle computing section that calculates the rotational angle of the magnetic field generation source based on the detection data and the correction values, and outputs an angle signal indicating the rotational angle.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 17, 2019
    Inventors: Takeo YAMAMOTO, Ryuta TANAKA, Satoshi FUKASE, Kenta SOGO
  • Patent number: 10139530
    Abstract: To provide a decorative sheet which has anti-skid properties, is resistant to abrasion, exhibits high abrasion resistance even when bonded to a floor or road surface over which pedestrians or vehicles traverse, does not cause pedestrians or vehicles to skid, and does not suffer from damage or peeling. [Resolution Means] A decorative sheet having a first bead coat layer comprising a resin and particles having a median diameter of from 20 ?m to 60 ?m, a second bead coat layer which is coated on the first bead coat layer and which includes a resin and particles having a median diameter of from 20 ?m to 60 ?m, a design layer and an adhesive layer.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: November 27, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Takeo Yamamoto, Hidetoshi Abe
  • Patent number: 9997432
    Abstract: A semiconductor device includes: a heat spreader; a semiconductor element on the heat spreader; and a connection member arranged between the heat spreader and the semiconductor element. The heat spreader is arranged in an order of the first heat spreader, the second heat spreader and the first heat spreader in one direction of a plane of the heat spreader. Each of the first and second heat spreaders includes multiple anisotropic heat conductive planes having a high heat conductivity. The anisotropic heat conductive plane of the first heat spreader is in parallel to both a stacking direction and a first direction perpendicular to the stacking direction. The anisotropic heat conductive plane of the second heat spreader is in parallel to both the stacking direction and a second direction perpendicular to the stacking direction. A projection region of the semiconductor element overlaps with the second heat spreader.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: June 12, 2018
    Assignee: DENSO CORPORATION
    Inventors: Takeo Yamamoto, Kazuhiko Sugiura
  • Publication number: 20170213778
    Abstract: A semiconductor device includes: a heat spreader; a semiconductor element on the heat spreader; and a connection member arranged between the heat spreader and the semiconductor element. The heat spreader is arranged in an order of the first heat spreader, the second heat spreader and the first heat spreader in one direction of a plane of the heat spreader. Each of the first and second heat spreaders includes multiple anisotropic heat conductive planes having a high heat conductivity. The anisotropic heat conductive plane of the first heat spreader is in parallel to both a stacking direction and a first direction perpendicular to the stacking direction. The anisotropic heat conductive plane of the second heat spreader is in parallel to both the stacking direction and a second direction perpendicular to the stacking direction. A projection region of the semiconductor element overlaps with the second heat spreader.
    Type: Application
    Filed: October 16, 2015
    Publication date: July 27, 2017
    Inventors: Takeo YAMAMOTO, Kazuhiko SUGIURA
  • Patent number: 9395422
    Abstract: The present invention relates to a magnetism detection device. First and second switch units switch a direction of a current flown from a bias generating unit across two opposite terminals of four terminals of a hall sensor, and switch a direction of a voltage to be available in remaining two opposite terminals in the direction orthogonal to the direction of the current, respectively, so that in a first period, a polarity of a hall electromotive force is a first polarity and a polarity of the hall offset voltage alternates four times, and in a second period, the polarity of the hall electromotive force is a second polarity opposite to the first polarity and the polarity of the hall offset voltage alternates four times.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: July 19, 2016
    Assignee: Asahi Kasei Microdevices Corporation
    Inventor: Takeo Yamamoto
  • Publication number: 20150147526
    Abstract: To provide a decorative sheet which has anti-skid properties, is resistant to abrasion, exhibits high abrasion resistance even when bonded to a floor or road surface over which pedestrians or vehicles traverse, does not cause pedestrians or vehicles to skid, and does not suffer from damage or peeling. [Resolution Means] A decorative sheet having a first bead coat layer comprising a resin and particles having a median diameter of from 20 ?m to 60 ?m, a second bead coat layer which is coated on the first bead coat layer and which includes a resin and particles having a median diameter of from 20 ?m to 60 ?m, a design layer and an adhesive layer.
    Type: Application
    Filed: October 11, 2012
    Publication date: May 28, 2015
    Inventors: Takeo Yamamoto, Hidetoshi Abe
  • Publication number: 20140210462
    Abstract: The present invention relates to a magnetism detection device. First and second switch units switch a direction of a current flown from a bias generating unit across two opposite terminals of four terminals of a hall sensor, and switch a direction of a voltage to be available in remaining two opposite terminals in the direction orthogonal to the direction of the current, respectively, so that in a first period, a polarity of a hall electromotive force is a first polarity and a polarity of the hall offset voltage alternates four times, and in a second period, the polarity of the hall electromotive force is a second polarity opposite to the first polarity and the polarity of the hall offset voltage alternates four times.
    Type: Application
    Filed: April 8, 2013
    Publication date: July 31, 2014
    Applicant: ASAHI KASEI MICRODEVICES CORPORATION
    Inventor: Takeo Yamamoto
  • Patent number: 8690193
    Abstract: Rear wheel tires of a vehicle body are spaced apart from each other in the vehicle width direction. A foreign object removing device is provided between an outer tire and an inner tire of the rear wheels on one side of the vehicle for removing foreign objects between the tires. The foreign object removing device includes a bar-shaped member inserted in a suspended state between the tires, and a shoe provided in a lower end side of the bar-shaped member to collide with foreign objects such as earth and sand, and stones getting in between the tires for flicking out the foreign objects from between the tires. The shoe is replaceably attached to the lower end side of the bar-shaped member by using a bolt. In a case where the shoe wears down, only the shoe is replaced.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: April 8, 2014
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Takeo Yamamoto, Yasuki Kita, Takayuki Sato, Kazunori Ishihara, Atsushi Kitaguchi, Takehito Ikema, Michio Fushiki, Tomohiko Yasuda, Shinji Akino, Yoshifumi Nabeshima
  • Patent number: 8440524
    Abstract: A method for manufacturing a semiconductor device including a semiconductor substrate composed of silicon carbide, an upper surface electrode which contacts an upper surface of the substrate, and a lower surface electrode which contacts a lower surface of the substrate, the method including steps of: (a) forming an upper surface structure on the upper surface side of the substrate, and (b) forming a lower surface structure on the lower surface side of the substrate. The step (a) comprises steps of: (a1) depositing an upper surface electrode material layer on the upper surface of the substrate, the upper surface electrode material layer being a raw material layer of the upper surface electrode, and (a2) annealing the upper surface electrode material layer.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: May 14, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Hirokazu Fujiwara, Masaki Konishi, Jun Kawai, Takeo Yamamoto, Takeshi Endo, Takashi Katsuno, Yukihiko Watanabe, Narumasa Soejima
  • Patent number: 8436365
    Abstract: A SiC semiconductor device having a Schottky barrier diode includes: a substrate made of SiC and having a first conductive type, wherein the substrate includes a main surface and a rear surface; a drift layer made of SiC and having the first conductive type, wherein the drift layer is disposed on the main surface of the substrate and has an impurity concentration lower than the substrate; a Schottky electrode disposed on the drift layer and has a Schottky contact with a surface of the drift layer; and an ohmic electrode disposed on the rear surface of the substrate. The Schottky electrode directly contacts the drift layer in such a manner that a lattice of the Schottky electrode is matched with a lattice of the drift layer.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: May 7, 2013
    Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeo Yamamoto, Takeshi Endo, Jun Morimoto, Hirokazu Fujiwara, Yukihiko Watanabe, Takashi Katsuno, Tsuyoshi Ishikawa
  • Patent number: 8324704
    Abstract: A silicon carbide semiconductor device with a Schottky barrier diode includes a first conductivity type silicon carbide substrate, a first conductivity type silicon carbide drift layer on a first surface of the substrate, a Schottky electrode forming a Schottky contact with the drift layer, and an ohmic electrode on a second surface of the substrate. The Schottky electrode includes an oxide layer in direct contact with the drift layer. The oxide layer is made of an oxide of molybdenum, titanium, nickel, or an alloy of at least two of these elements.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: December 4, 2012
    Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeo Yamamoto, Takeshi Endo, Eiichi Okuno, Hirokazu Fujiwara, Masaki Konishi, Takashi Katsuno, Yukihiko Watanabe
  • Publication number: 20120205961
    Abstract: Rear wheel tires of a vehicle body are spaced apart from each other in the vehicle width direction. A foreign object removing device is provided between an outer tire and an inner tire of the rear wheels on one side of the vehicle for removing foreign objects between the tires. The foreign object removing device includes a bar-shaped member inserted in a suspended state between the tires, and a shoe provided in a lower end side of the bar-shaped member to collide with foreign objects such as earth and sand, and stones getting in between the tires for flicking out the foreign objects from between the tires. The shoe is replaceably attached to the lower end side of the bar-shaped member by using a bolt. In a case where the shoe wears down, only the shoe is replaced.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 16, 2012
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Takeo YAMAMOTO, Yasuki KITA, Takayuki SATO, Kazunori ISHIHARA, Atsushi KITAGUCHI, Takehito IKEMA, Michio FUSHIKI, Tomohiko YASUDA, Shinji AKINO, Yoshifumi NABESHIMA