Patents by Inventor Takaki Hamamoto

Takaki Hamamoto 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).

  • Publication number: 20200105723
    Abstract: A module includes: a resin insulating layer; a first electronic component mounted on a lower surface of the resin insulating layer and including first and second terminals on an upper surface of the first electronic component; a resin bonding layer bonding the lower surface of the resin insulating layer to the upper surface of the first electronic component; first and second wiring lines located on inner surfaces of at least one first through hole and at least one second through hole penetrating through the resin insulating layer and the resin bonding layer, respectively, located on an upper surface of the resin insulating layer, and connecting to the first and second terminals, respectively, wherein an opening penetrating through the resin insulating layer and the resin bonding layer is provided between the first and second terminals and between the first and second wiring lines, and no other metal layers are provided.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Inventors: Yasuhito HAGIWARA, Shigeru YOKOYAMA, Michiharu KAWANO, Takaki HAMAMOTO
  • Patent number: 10520376
    Abstract: In one aspect, a load cell includes an elastic body, first optical unit, second optical unit, detector, and computation unit. The first optical unit has a light source, a first diffraction grating on which light from the light source is incident, and a light-receiving unit. The first optical unit is fixed to a first end portion of the elastic body and arranged within a hollow portion of the elastic body. The second optical unit has a second diffraction grating on which diffracted light from the first diffraction grating is incident to generate interference light. The second optical unit is fixed to a second end portion of the elastic body and arranged within the hollow portion. The detector detects the interference light. The computation unit computes a relative displacement amount of the second diffraction grating relative to the first diffraction grating on the basis of a signal obtained by the detector.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: December 31, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Fuyuki Miyazawa, Katsuhiro Oyama, Isao Matsuda, Yasuhito Hagiwara, Takaki Hamamoto
  • Patent number: 10012519
    Abstract: A displacement measurement device includes: a light source; a first diffraction grating and a second diffraction grating arranged along a path of light from the light source and movable relative to one another, the first and second diffraction gratings generating diffracted light; an optical sensor that detects interference light produced by interference between ?nth order diffracted light generated as a result of the second diffraction grating diffracting +nth order diffracted light from the first diffraction grating and +nth order diffracted light generated as a result of the second diffraction grating diffracting ?nth order diffracted light from the first diffraction grating, where n is a natural number greater than or equal to 1; and a calculation unit calculating, according to a signal from the optical sensor, a relative displacement between the first and second diffraction gratings in a direction orthogonal to an optical axis of the first and second diffraction gratings.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: July 3, 2018
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Fuyuki Miyazawa, Yasuhito Hagiwara, Takaki Hamamoto, Katsuhiro Oyama
  • Publication number: 20180106690
    Abstract: In one aspect, a load cell includes an elastic body, first optical unit, second optical unit, detector, and computation unit. The first optical unit has a light source, a first diffraction grating on which light from the light source is incident, and a light-receiving unit. The first optical unit is fixed to a first end portion of the elastic body and arranged within a hollow portion of the elastic body. The second optical unit has a second diffraction grating on which diffracted light from the first diffraction grating is incident to generate interference light. The second optical unit is fixed to a second end portion of the elastic body and arranged within the hollow portion. The detector detects the interference light. The computation unit computes a relative displacement amount of the second diffraction grating relative to the first diffraction grating on the basis of a signal obtained by the detector.
    Type: Application
    Filed: October 18, 2017
    Publication date: April 19, 2018
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Fuyuki MIYAZAWA, Katsuhiro OYAMA, Isao MATSUDA, Yasuhito HAGIWARA, Takaki HAMAMOTO
  • Publication number: 20180066966
    Abstract: A displacement measuring device according to the present invention includes a diffraction grating that receives light from a light source, the first diffraction grating including a plurality of grating pattern regions respectively having prescribed diffraction grating patterns, grating pitches of the plurality of grating pattern regions being equal to one another, the plurality of grating pattern regions being arranged in a direction that is orthogonal to a direction in which the prescribed diffraction grating patterns extend; a second diffraction grating that produces interference light upon receiving diffracted light rays emitted from the first diffraction grating; and a light detector that receives the interference light emitted from the second diffraction grating, the light detector including a plurality of photodetectors, the plurality of photodetectors being arranged along a first direction that is orthogonal to a direction in which interference fringes created by the interference light extend.
    Type: Application
    Filed: August 31, 2017
    Publication date: March 8, 2018
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Katsuhiro Oyama, Fuyuki Miyazawa, Yasuhito Hagiwara, Takaki Hamamoto, Isao Matsuda
  • Patent number: 9719809
    Abstract: An optical unit includes: a first diffraction grating where light from a light source enters; a second diffraction grating that generates interference light as a result of diffracted light rays emitted from the first diffraction grating entering the second diffraction grating; and an optical member including a pair of reflective surfaces that are parallel and opposite to each other, the optical member being configured such that the pair of reflective surfaces respectively reflect ±mth-order diffracted light rays that are diffracted light rays of a specific order among a plurality of orders of the diffracted light rays emitted from the first diffraction grating so as to guide the ±mth-order diffracted light rays to the second diffraction grating, where m is a natural number.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 1, 2017
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Katsuhiro Oyama, Fuyuki Miyazawa, Yasuhito Hagiwara, Takaki Hamamoto, Isao Matsuda
  • Publication number: 20160216101
    Abstract: An optical unit includes: a first diffraction grating where light from a light source enters; a second diffraction grating that generates interference light as a result of diffracted light rays emitted from the first diffraction grating entering the second diffraction grating; and an optical member including a pair of reflective surfaces that are parallel and opposite to each other, the optical member being configured such that the pair of reflective surfaces respectively reflect ±mth-order diffracted light rays that are diffracted light rays of a specific order among a plurality of orders of the diffracted light rays emitted from the first diffraction grating so as to guide the ±mth-order diffracted light rays to the second diffraction grating, where m is a natural number.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Katsuhiro OYAMA, Fuyuki MIYAZAWA, Yasuhito HAGIWARA, Takaki HAMAMOTO, Isao MATSUDA
  • Publication number: 20160116305
    Abstract: A displacement measurement device includes: a light source; a first diffraction grating and a second diffraction grating arranged along a path of light from the light source and movable relative to one another, the first and second diffraction gratings generating diffracted light; an optical sensor that detects interference light produced by interference between ?nth order diffracted light generated as a result of the second diffraction grating diffracting +nth order diffracted light from the first diffraction grating and +nth order diffracted light generated as a result of the second diffraction grating diffracting ?nth order diffracted light from the first diffraction grating, where n is a natural number greater than or equal to 1; and a calculation unit calculating, according to a signal from the optical sensor, a relative displacement between the first and second diffraction gratings in a direction orthogonal to an optical axis of the first and second diffraction gratings.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Fuyuki MIYAZAWA, Yasuhito HAGIWARA, Takaki HAMAMOTO, Katsuhiro OYAMA
  • Patent number: 8715805
    Abstract: An object of the present invention is to provide a recordable recording medium that suppresses increase in terminal noise and does not generate a BCA signal read error. The present invention provides a recordable optical recording medium comprising a substrate as well as at least a reflection layer, recording layer and light transmission layer provided on the substrate, wherein the recording layer of said optical recording medium contains (a) an azo metal complex dye and (b) another dye whose DSC decomposition heat value is 50 cal/g to 200 cal/g and ?max in TFP solution is 250 to 400 nm.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: May 6, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Isao Matsuda, Takaki Hamamoto, Takuo Kodaira