Patents by Inventor Takahisa Hirasawa

Takahisa Hirasawa 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: 20200161919
    Abstract: A coil substrate includes a flexible substrate, and a coil including a wiring and formed on the flexible substrate. The flexible substrate has a cut penetrating through the flexible substrate such that the cut is formed to extend along a portion of the coil.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 21, 2020
    Applicant: IBIDEN CO., LTD.
    Inventors: Haruhiko MORITA, Hitoshi Miwa, Shinobu Kato, Toshihiko Yokomaku, Hisashi Kato, Takahisa Hirasawa, Tetsuya Muraki, Takayuki Furuno
  • Publication number: 20200075223
    Abstract: A planar transformer includes a flexible insulating substrate having a first surface and a second surface on the opposite side with respect to the first surface, and multiple coils formed side by side on the first surface and the second surface of the flexible insulating substrate such that each of the coils includes a spiral-shaped wiring. The flexible insulating substrate has bending portions formed such that the flexible insulating substrate is folded at the bending portions and stack the coils one another.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Applicant: IBIDEN CO., LTD.
    Inventors: Haruhiko MORITA, Hitoshi MIWA, Shinobu KATO, Toshihiko YOKOMAKU, Hisashi KATO, Takahisa HIRASAWA, Tetsuya MURAKI, Takayuki FURUNO
  • Publication number: 20200076263
    Abstract: A motor coil substrate includes a flexible substrate, and multiple coils formed on the flexible substrate such that each of the coils has a spiral shape. The flexible substrate has multiple folding lines formed and the multiple coils positioned such that the flexible substrate is folded at the folding lines and wound around a magnet and that an m-th coil and an (m+1)-th coil of the coils partially overlap one another when folded at the folding lines.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 5, 2020
    Applicant: IBIDEN CO., LTD.
    Inventors: Haruhiko MORITA, Hitoshi MIWA, Shinobu KATO, Toshihiko YOKOMAKU, Hisashi KATO, Takahisa HIRASAWA, Tetsuya MURAKI, Takayuki FURUNO
  • Publication number: 20200075224
    Abstract: A planar transfoinier includes a flexible insulating substrate having a pair of short sides, a pair of long sides, a first surface, and a second surface on an opposite side with respect to the first surface, multiple coils formed side by side on the first surface and second surface of the flexible insulating substrate such that each of the coils has a spiral-shaped wiring, and multiple terminals formed on the flexible insulating substrate and connected to the coils respectively such that the terminals are positioned in a center portion of the flexible insulating substrate formed close to a center of the long sides of the flexible insulating substrate. The flexible insulating substrate has multiple bending portions formed such that the flexible insulating substrate is folded at the bending portions and stacks the coils one another.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Applicant: IBIDEN CO., LTD.
    Inventors: Haruhiko MORITA, Hitoshi MIWA, Shinobu KATO, Toshihiko YOKOMAKU, Hisashi KATO, Takahisa HIRASAWA, Tetsuya MURAKI, Takayuki FURUNO
  • Patent number: 10319892
    Abstract: A light-emitting element mounting substrate includes a substrate including insulating resin, a first conductor layer formed on a first surface of the substrate and having an element mounting portion, a second conductor layer formed on a second surface of the substrate on the opposite side of the first surface, metal blocks formed such that the metal blocks are penetrating through the first conductor layer, the substrate and the second conductor layer and positioned in the element mounting portion of the first conductor layer, and through-hole conductors formed adjacent to the metal blocks respectively such that the through-hole conductors electrically connect the first conductor layer and the second conductor layer and that a diameter of each metal block is larger than a diameter of each through-hole conductor.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: June 11, 2019
    Assignee: IBIDEN CO., LTD.
    Inventors: Takahisa Hirasawa, Kiyotaka Tsukada
  • Patent number: 10297937
    Abstract: A composite flexible printed wiring board includes a first flexible printed wiring board having an insulating layer, conductor layers and a first metal block fitted in a hole penetrating through the conductor layers and insulating layer, and a second flexible printed wiring board having an insulating layer, conductor layers and a second metal block fitted in a hole penetrating through the conductor layers and insulating layer. The first flexible printed wiring board and the second flexible printed wiring board have a welded portion formed by welding the first metal block and the second metal block and joining the first metal block and the second metal block such that the welded portion is joining the first flexible printed wiring board and the second flexible printed wiring board.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: May 21, 2019
    Assignee: IBIDEN CO., LTD.
    Inventors: Takahisa Hirasawa, Takayuki Furuno
  • Publication number: 20190036289
    Abstract: A flexible printed wiring board includes a flexible insulating layer, a conductor layer formed on a surface of the flexible insulating layer, and a metal body having a columnar shape and fitted in a hole penetrating through the flexible insulating layer and the conductor layer such that the metal body is formed of a welding base material and has an end portion formed to be joined to an electrode of a battery by welding. The welding base material of the metal body of the flexible printed wiring board includes the same material as the electrode of the battery.
    Type: Application
    Filed: July 31, 2018
    Publication date: January 31, 2019
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Takayuki Furuno
  • Publication number: 20190036247
    Abstract: A composite flexible printed wiring board includes a first flexible printed wiring board having an insulating layer, conductor layers and a first metal block fitted in a hole penetrating through the conductor layers and insulating layer, and a second flexible printed wiring board having an insulating layer, conductor layers and a second metal block fitted in a hole penetrating through the conductor layers and insulating layer. The first flexible printed wiring board and the second flexible printed wiring board have a welded portion formed by welding the first metal block and the second metal block and joining the first metal block and the second metal block such that the welded portion is joining the first flexible printed wiring board and the second flexible printed wiring board.
    Type: Application
    Filed: July 31, 2018
    Publication date: January 31, 2019
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa Hirasawa, Takayuki Furuno
  • Publication number: 20180233644
    Abstract: A light-emitting element mounting substrate includes a substrate including insulating resin, a first conductor layer formed on a first surface of the substrate and having an element mounting portion, a second conductor layer formed on a second surface of the substrate on the opposite side of the first surface, metal blocks formed such that the metal blocks are penetrating through the first conductor layer, the substrate and the second conductor layer and positioned in the element mounting portion of the first conductor layer, and through-hole conductors formed adjacent to the metal blocks respectively such that the through-hole conductors electrically connect the first conductor layer and the second conductor layer and that a diameter of each metal block is larger than a diameter of each through-hole conductor.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 16, 2018
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa Hirasawa, Kiyotaka Tsukada
  • Publication number: 20170374742
    Abstract: A composite wiring board includes a first wiring board including a first insulating layer, a first conductor layer formed on the first insulating layer, and metal elements penetrating the first insulating layer and the first conductor layer such that the metal elements are electrically connected to each other by the first conductor layer, and a second wiring board including a second insulating layer and a second conductor layer forming on the second insulating layer and including metal connection terminals such that the metal connection terminals are corresponding to and directly bonded to the metal elements of the first wiring board, respectively.
    Type: Application
    Filed: June 22, 2017
    Publication date: December 28, 2017
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Takayuki FURUNO, Kiyotaka TSUKADA
  • Publication number: 20170223816
    Abstract: A flexible printed wiring board includes a flexible insulating layer, a conductor layer formed on a surface of the flexible insulating layer, and a metal block including a welding base material and positioned such that the metal block is penetrating through the flexible insulating layer and the conductor layer.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 3, 2017
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Kiyotaka TSUKADA
  • Publication number: 20170222112
    Abstract: A light-emitting element mounting substrate includes a substrate including an insulating resin material, a first conductor layer formed on a first main surface of the substrate, a second conductor layer formed on a second main surface of the substrate on the opposite side to the first main surface, metal blocks positioned such that the metal blocks are penetrating through the first conductor layer, substrate and second conductor layer, and through hole conductors formed to extend adjacent to the metal blocks respectively such that the through hole conductors electrically connect the first conductor layer and the second conductor layer. The first conductor layer has an element mounting portion formed such that a light-emitting element is mounted to a first conductor layer side on the element mounting portion, and the metal blocks are positioned such that the metal blocks have end portions in the element mounting portion of the first conductor layer.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 3, 2017
    Applicant: IBIDEN CO., LTD.
    Inventors: Takahisa HIRASAWA, Kiyotaka TSUKADA
  • Patent number: 8173004
    Abstract: A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: May 8, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Takahisa Hirasawa, Hiroshi Yoshikura, Junichi Ikeda, Tsuyoshi Kawase, Yuichi Kobayashi
  • Patent number: 7980831
    Abstract: An oscillating type piston is connected to an output shaft of an electric motor through a crankshaft. The piston is provided with a lip ring that slidingly contacts a cylinder. The motor is rotated forward and reversely by using a control circuit. Thus, different regions of the piston are subjected to a load during forward rotation of the motor and during reverse rotation thereof. Accordingly, wear of the lip ring can be distributed to different regions thereof.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: July 19, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Shingo Miyake, Yoshie Tsujimi, Takahisa Hirasawa
  • Publication number: 20100213072
    Abstract: A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal.
    Type: Application
    Filed: March 16, 2010
    Publication date: August 26, 2010
    Inventors: Takahisa HIRASAWA, Hiroshi YOSHIKURA, Junichi IKEDA, Tsuyoshi KAWASE, Yuichi KOBAYASHI
  • Patent number: 7722331
    Abstract: An air-compressing apparatus has four compressors individually supplying compressed air to a tank having a pressure sensor. The pressure sensor is connected to control circuits of the compressors. The control circuits compute times needed for the tank pressure to reach minimum and maximum pressures, respectively, of the tank by using the detected tank pressure and also using a tank pressure change value. The computed time values correspond to the consumption of compressed air. Thus, the control circuits can control the number of compressors to be operated according to the consumption of compressed air.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: May 25, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Takahisa Hirasawa, Kazumasa Kawasaki, Manabu Shindo, Tomohiro Nakamura, Hiroshi Chikuma
  • Publication number: 20070280833
    Abstract: An oscillating type piston is connected to an output shaft of an electric motor through a crankshaft. The piston is provided with a lip ring that slidingly contacts a cylinder. The motor is rotated forward and reversely by using a control circuit. Thus, different regions of the piston are subjected to a load during forward rotation of the motor and during reverse rotation thereof. Accordingly, wear of the lip ring can be distributed to different regions thereof.
    Type: Application
    Filed: May 29, 2007
    Publication date: December 6, 2007
    Inventors: Shingo Miyake, Yoshie Tsujimi, Takahisa Hirasawa
  • Publication number: 20070077151
    Abstract: An air-compressing apparatus has four compressors individually supplying compressed air to a tank having a pressure sensor. The pressure sensor is connected to control circuits of the compressors. The control circuits compute times needed for the tank pressure to reach minimum and maximum pressures, respectively, of the tank by using the detected tank pressure and also using a tank pressure change value. The computed time values correspond to the consumption of compressed air. Thus, the control circuits can control the number of compressors to be operated according to the consumption of compressed air.
    Type: Application
    Filed: September 27, 2006
    Publication date: April 5, 2007
    Inventors: Takahisa Hirasawa, Kazumasa Kawasaki, Manabu Shindo, Tomohiro Nakamura, Hiroshi Chikuma
  • Publication number: 20070068821
    Abstract: A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal.
    Type: Application
    Filed: September 27, 2005
    Publication date: March 29, 2007
    Inventors: Takahisa Hirasawa, Hiroshi Yoshikura, Junichi Ikeda, Tsuyoshi Kawase, Yuichi Kobayashi