Patents by Inventor Tatsuya Furukawa

Tatsuya Furukawa 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: 12278582
    Abstract: To provide a controller for rotary machine which can reduce the effective value of the bus line AC component, by utilizing the degree of freedom that two set of armature windings and two sets of inverters are provided, without necessity to synchronize the on/off control timing of the switching devices of first set, and the on/off control timing of the switching devices of second set. A controller for rotary machine calculates the utilization factor setting command which makes the utilization factor ratio change from 1 to 1 so that an effective value of a bus line AC component which is an AC component superimposed on a bus current which flows through a bus line connecting between the DC power source and the two set of inverters becomes lower than a case where the utilization factor ratio is 1 to 1.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: April 15, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa
  • Patent number: 12258081
    Abstract: Provided is a rotation angle detection device including: an intermediate signal generation unit configured to generate an intermediate signal based on a product of a sine signal and a cosine signal which are based on a rotation angle of a rotating body; a first multiplication unit; and a first rotation angle calculation unit. The intermediate signal generation unit includes: a first multiplier configured to calculate the product of the sine signal and the cosine signal; and a first low-pass filter configured to remove frequency components equal to or higher than twice a frequency of fundamental waves of the sine signal and the cosine signal from an output of the first multiplier.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: March 25, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Akira Furukawa
  • Patent number: 12255958
    Abstract: A plurality of communication units of an on-board relay device include a remote communication unit to which a communication device outside a vehicle for communicating with an external server is connected, and a local communication unit to which a diagnostic device is connected, and a control unit of the on-board relay device performs lower layer side control for relay based on a lower side layered protocol in communication, and upper layer side control for relay based on an upper side layered protocol rather than the lower side layered protocol, and performs adjustment processing with respect to a conflict of a plurality of maintenance processings by the upper layer side control when information relevant to the plurality of maintenance processings with respect to any one on-board ECU of a plurality of on-board ECUs is input through the local communication unit and the remote communication unit.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: March 18, 2025
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Darmawan Go, Hideki Maeda, Takeshi Hagihara, Yosuke Shimizu, Tatsuya Izumi, Hirofumi Urayama, Masashi Amesara, Hisashi Furukawa, Shu Ishizuka, Hideki Goto
  • Publication number: 20240339983
    Abstract: A noise removal filter for removing noise propagated through a plurality of bus bars to which an output of an electric-power control device is to be supplied. The noise removal filter includes: an annular inductance attached to the plurality of bus bars that are inserted through the annular inductance; and a capacitor unit including a capacitor having a terminal electrically connected to surfaces of the plurality of bus bars and another terminal electrically connected to a reference potential. The inductance and the capacitor unit are attached to the plurality of bus bars in variable positions.
    Type: Application
    Filed: April 4, 2024
    Publication date: October 10, 2024
    Inventor: Tatsuya FURUKAWA
  • Patent number: 11376891
    Abstract: A tyre for winter comprises a tread portion 2 having a first tread edge (Te1) and a second tread edge (Te2) and sipes 40 provided in at least a part of the tread portion 2. The tread portion 2 is provided with a plurality of first oblique grooves (10A) each extending obliquely from the first tread edge (Te1) toward the second tread edge (Te2). Each of the first oblique grooves (10A) has an inner end (10a) terminating between a tyre equator (C) and the second tread edge (Te2). The inner end (10a) is not connected with other grooves.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: July 5, 2022
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Tatsuya Furukawa
  • Patent number: 11066715
    Abstract: A dehydrogenation processing method for a turbine blade of a steam turbine. The method includes a step of heating the turbine blade by suppling heating steam into a casing of the steam turbine after a steam turbine plant is stopped. The heating steam supplied to the casing has a temperature that is higher than steam passing through the turbine blade during operation of the steam turbine plant. The method further includes repeating the process of supplying the heating steam into the casing a multiple of times.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: July 20, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Yuichi Shimizu, Tatsuya Furukawa, Ryuichi Matsubara, Kenji Sato
  • Publication number: 20190263187
    Abstract: A tyre for winter comprises a tread portion 2 having a first tread edge (Te1) and a second tread edge (Te2) and sipes 40 provided in at least a part of the tread portion 2. The tread portion 2 is provided with a plurality of first oblique grooves (10A) each extending obliquely from the first tread edge (Te1) toward the second tread edge (Te2). Each of the first oblique grooves (10A) has an inner end (10a) terminating between a tyre equator (C) and the second tread edge (Te2). The inner end (10a) is not connected with other grooves.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 29, 2019
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Tatsuya FURUKAWA
  • Publication number: 20190100817
    Abstract: A dehydrogenation processing method for a turbine blade of a steam turbine includes: a step of heating the turbine blade by supplying heating steam into a casing of the steam turbine when a steam turbine plant is started or stopped.
    Type: Application
    Filed: March 6, 2017
    Publication date: April 4, 2019
    Inventors: Yuichi SHIMIZU, Tatsuya FURUKAWA, Ryuichi MATSUBARA, Kenji SATO
  • Patent number: 9982545
    Abstract: The precipitation hardened martensitic stainless steel is characterized by containing, in percent by weight, 12.25 to 14.25% Cr, 7.5 to 8.5% Ni, 1.0 to 2.5% Mo, 0.05% or less C, 0.2% or less Si, 0.4% or less Mn, 0.03% or less P, 0.005% or less S, 0.008% or less N, 0.90 to 2.25% Al, the balance substantially being Fe, and the total content of Cr and Mo being 14.25 to 16.75%. A turbine moving blade and a steam turbine are manufactured by using this martensitic stainless steel.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: May 29, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yuichi Hirakawa, Yoshikuni Kadoya, Hiroharu Ooyama, Tatsuya Furukawa, Naoto Tochitani
  • Patent number: 9753192
    Abstract: A reflector that is used for adjusting a radiation direction of a radiation unit in a position detection apparatus that performs a process based on a detected position of reflected light of light radiated from the radiation unit includes a first reflection surface that reflects the light radiated from the radiation unit, and a second reflection surface that intersects with the first reflection surface and reflects the light radiated from the radiation unit.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: September 5, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Tatsuya Furukawa
  • Patent number: 9733726
    Abstract: A projector acquires the distance from the projector to a screen. When the acquired distance is short, the projector increases the shutter speed of an electronic shutter of an imaging section, whereas when the acquired distance is long, the projector decreases the shutter speed of the electronic shutter of the imaging section. A pointer outputs infrared light for a predetermined period, and the imaging section of the projector captures the infrared light outputted by the pointer at the set shutter speed and identifies the position of the pointer.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: August 15, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Tatsuya Furukawa
  • Patent number: 9675234
    Abstract: A sealability acquiring mechanism disposed in a medical apparatus has a raising base unit constituted of a raising base operating mechanism, a raising tube path portion, a guide tube and a raising base. In the raising tube path portion, there is disposed a sealing member that is water-tightly or air-tightly fixed to a wire fixing portion to be connected to a raising wire inserted into an outer peripheral member and the outer peripheral member, a fluid supplied from an opening of the outer peripheral member flows between an inner peripheral surface of a raising tube path and an outer peripheral surface of the sealing member, and the raising base operating mechanism is water-tightly or air-tightly separated from the raising tube path.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: June 13, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Masayo Tsumaru, Toshio Nakamura, Tatsuya Furukawa, Koji Yamaya, Seiji Saito, Tetsuhiro Yamada, Kahori Yasunaga
  • Patent number: 9404373
    Abstract: A turbine-blade retaining structure in which deformation of end portions of locking pieces exposed through an insertion window portion in the axial direction is prevented, and the occurrence of a crack in a welded portion is prevented. At least one of the end portions of adjacent locking pieces exposed through the insertion window portion is provided with a thick-plate portion that expands in the disc-thickness direction so as to be inside the insertion window portion.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: August 2, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Keita Kimura, Yuki Enomoto, Tatsuya Furukawa
  • Publication number: 20160154472
    Abstract: A projector acquires the distance from the projector to a screen. When the acquired distance is short, the projector increases the shutter speed of an electronic shutter of an imaging section, whereas when the acquired distance is long, the projector decreases the shutter speed of the electronic shutter of the imaging section. A pointer outputs infrared light for a predetermined period, and the imaging section of the projector captures the infrared light outputted by the pointer at the set shutter speed and identifies the position of the pointer.
    Type: Application
    Filed: November 18, 2015
    Publication date: June 2, 2016
    Inventor: Tatsuya Furukawa
  • Publication number: 20160150946
    Abstract: A sealability acquiring mechanism disposed in a medical apparatus has a raising base unit constituted of a raising base operating mechanism, a raising tube path portion, a guide tube and a raising base. In the raising tube path portion, there is disposed a sealing member that is water-tightly or air-tightly fixed to a wire fixing portion to be connected to a raising wire inserted into an outer peripheral member and the outer peripheral member, a fluid supplied from an opening of the outer peripheral member flows between an inner peripheral surface of a raising tube path and an outer peripheral surface of the sealing member, and the raising base operating mechanism is water-tightly or air-tightly separated from the raising tube path.
    Type: Application
    Filed: February 4, 2016
    Publication date: June 2, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Masayo TSUMARU, Toshio NAKAMURA, Tatsuya FURUKAWA, Koji YAMAYA, Seiji SAITO, Tetsuhiro YAMADA, Kahori YASUNAGA
  • Publication number: 20150315921
    Abstract: The precipitation hardened martensitic stainless steel is characterized by containing, in percent by weight, 12.25 to 14.25% Cr, 7.5 to 8.5% Ni, 1.0 to 2.5% Mo, 0.05% or less C, 0.2% or less Si, 0.4% or less Mn, 0.03% or less P, 0.005% or less S, 0.008% or less N, 0.90 to 2.25% Al, the balance substantially being Fe, and the total content of Cr and Mo being 14.25 to 16.75%. A turbine moving blade and a steam turbine are manufactured by using this martensitic stainless steel.
    Type: Application
    Filed: July 14, 2015
    Publication date: November 5, 2015
    Inventors: Yuichi HIRAKAWA, Yoshikuni KADOYA, Hiroharu OOYAMA, Tatsuya FURUKAWA, Naoto TOCHITANI
  • Publication number: 20150204659
    Abstract: A reflector that is used for adjusting a radiation direction of a radiation unit in a position detection apparatus that performs a process based on a detected position of reflected light of light radiated from the radiation unit includes a first reflection surface that reflects the light radiated from the radiation unit, and a second reflection surface that intersects with the first reflection surface and reflects the light radiated from the radiation unit.
    Type: Application
    Filed: January 16, 2015
    Publication date: July 23, 2015
    Inventor: Tatsuya FURUKAWA
  • Patent number: 8303487
    Abstract: An endoscope 2 includes an insertion body 3 equipped with a potentiometer 26 for detecting a bending state of a bending portion 3B which is allowed to be bent and inserted into a subject and an electric connector 18c for outputting an electric signal as a detection result of the potentiometer 26, and a motor unit 4 detachable with respect to the insertion body 3 via an attachment/detachment portion 14, which is equipped with an electric motor 23 for bending the bending portion 3B.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: November 6, 2012
    Assignee: Olympus Corporation
    Inventors: Haruhiko Ueno, Tatsuya Ishizuka, Yuichi Ikeda, Tatsuya Furukawa, Yutaka Masaki, Masanobu Koitabashi, Noriaki Kanazawa
  • Patent number: 8000915
    Abstract: An apparatus for accurately estimating the SOC of a rechargeable battery installed in a hybrid electric vehicle. A voltage variation measurement unit measures terminal voltage variation amount of the rechargeable battery in a no-battery-current state in which a charge-discharge current does not flow in the rechargeable battery. A polarization voltage calculator calculates a polarization voltage from the measured variation amount. An electromotive force calculator subtracts the polarization voltage from a non-load voltage in a state in which a charge-discharge path is open to calculate the electromotive force of the rechargeable battery. An SOC estimator estimates the SOC of the rechargeable battery based on the electromotive force.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: August 16, 2011
    Assignee: Panasonic EV Energy Co., Ltd.
    Inventors: Tatsuya Furukawa, Naoto Sato
  • Patent number: 7828723
    Abstract: A power driven bending endoscope with detachable insertion portion 2 is formed of an insertion body 3 having a flexible bending portion 3B, and a motor unit 4 having an electric motor 23 for driving to bend the bending portion 3B and a potentiometer 26 for detecting a bending state of the bending portion 3B, which are detachably coupled.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: November 9, 2010
    Assignee: Olympus Corporation
    Inventors: Haruhiko Ueno, Yuichi Ikeda, Tatsuya Ishizuka, Tatsuya Furukawa, Yutaka Masaki, Masanobu Koitabashi, Noriaki Kanazawa