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: 11962433
    Abstract: A switch device includes a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN is added, to another function unit via a communication port; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port among the plurality of communication ports, and generate a duplicate frame for diagnosis that is a frame obtained by adding, to a duplicate frame obtained through the duplication, specific information indicating that the duplicate frame for diagnosis should be transmitted to the diagnosis device. The switch unit outputs the duplicate frame for diagnosis generated by the duplication unit from a communication port corresponding to the other switch device.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: April 16, 2024
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akihito Iwata, Tatsuya Izumi, Hirofumi Urayama, Tadashi Matsumoto, Darmawan Go, Hideki Maeda, Takeshi Hagihara, Masashi Amesara, Hisashi Furukawa, Shu Ishizuka, Hideki Goto
  • Patent number: 11936309
    Abstract: A permanent-magnet-synchronous electric motor control device includes: a reference voltage value calculation unit for calculating a reference voltage value; an output voltage value calculation unit for calculating an output voltage value on the basis of a voltage command; a current weakening command calculation unit for calculating a current weakening command on the basis of the reference voltage value and the output voltage value; a voltage command calculation unit for calculating the voltage command on the basis of the current weakening command; and a power converter for supplying power to a permanent-magnet-synchronous electric motor on the basis of the voltage command. The current weakening command calculation unit calculates the current weakening command in which a high-frequency component is amplified on the basis of the difference between the reference voltage value and the output voltage value.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuya Tsuchimoto, Tatsuya Mori, Akira Furukawa, Isao Kezobo, Genki Fujii
  • 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
  • Patent number: 7814325
    Abstract: A method of certifying the existence of electronic information released on a network at a time and date. The network connects one or more computer servers and a plurality of client computers with each other. Electronic information of a web page stored in one of the plurality of client computers is accessed using information of its location from one of the computer servers based on a request from one of the client computers. A copy of the electronic information is then obtained. Attribute information is generated from the location, access time, and date when the electronic information is accessed. An electronic certificate may be generated by uniquely specifying the electronic information and the attribute information as inherent information identifying the electronic information. The copy of the electronic information is stored in a memory by tying up the electronic information with the electronic certificate and the attribute information.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: October 12, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoichi Kanai, Masuyoshi Yachida, Tomio Mizuno, Tatsuya Furukawa, Yoichi Ishikawa
  • Publication number: 20090271132
    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: Application
    Filed: April 20, 2009
    Publication date: October 29, 2009
    Applicant: PANASONIC EV ENERGY CO., LTD.
    Inventors: Tatsuya Furukawa, Naoto Sato