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).
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Patent number: 12278582Abstract: 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: GrantFiled: March 1, 2021Date of Patent: April 15, 2025Assignee: Mitsubishi Electric CorporationInventors: Tatsuya Mori, Akira Furukawa
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Patent number: 12258081Abstract: 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: GrantFiled: January 22, 2019Date of Patent: March 25, 2025Assignee: Mitsubishi Electric CorporationInventors: Tatsuya Mori, Akira Furukawa
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Patent number: 12255958Abstract: 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: GrantFiled: March 15, 2021Date of Patent: March 18, 2025Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Darmawan Go, Hideki Maeda, Takeshi Hagihara, Yosuke Shimizu, Tatsuya Izumi, Hirofumi Urayama, Masashi Amesara, Hisashi Furukawa, Shu Ishizuka, Hideki Goto
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Publication number: 20240339983Abstract: 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: ApplicationFiled: April 4, 2024Publication date: October 10, 2024Inventor: Tatsuya FURUKAWA
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Patent number: 11376891Abstract: 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: GrantFiled: February 20, 2019Date of Patent: July 5, 2022Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Tatsuya Furukawa
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Patent number: 11066715Abstract: 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: GrantFiled: March 6, 2017Date of Patent: July 20, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Yuichi Shimizu, Tatsuya Furukawa, Ryuichi Matsubara, Kenji Sato
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Publication number: 20190263187Abstract: 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: ApplicationFiled: February 20, 2019Publication date: August 29, 2019Applicant: Sumitomo Rubber Industries, Ltd.Inventor: Tatsuya FURUKAWA
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Publication number: 20190100817Abstract: 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: ApplicationFiled: March 6, 2017Publication date: April 4, 2019Inventors: Yuichi SHIMIZU, Tatsuya FURUKAWA, Ryuichi MATSUBARA, Kenji SATO
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Patent number: 9982545Abstract: 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: GrantFiled: July 14, 2015Date of Patent: May 29, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yuichi Hirakawa, Yoshikuni Kadoya, Hiroharu Ooyama, Tatsuya Furukawa, Naoto Tochitani
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Patent number: 9753192Abstract: 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: GrantFiled: January 16, 2015Date of Patent: September 5, 2017Assignee: SEIKO EPSON CORPORATIONInventor: Tatsuya Furukawa
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Patent number: 9733726Abstract: 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: GrantFiled: November 18, 2015Date of Patent: August 15, 2017Assignee: Seiko Epson CorporationInventor: Tatsuya Furukawa
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Patent number: 9675234Abstract: 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: GrantFiled: February 4, 2016Date of Patent: June 13, 2017Assignee: OLYMPUS CORPORATIONInventors: Masayo Tsumaru, Toshio Nakamura, Tatsuya Furukawa, Koji Yamaya, Seiji Saito, Tetsuhiro Yamada, Kahori Yasunaga
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Patent number: 9404373Abstract: 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: GrantFiled: January 28, 2013Date of Patent: August 2, 2016Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Keita Kimura, Yuki Enomoto, Tatsuya Furukawa
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Publication number: 20160154472Abstract: 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: ApplicationFiled: November 18, 2015Publication date: June 2, 2016Inventor: Tatsuya Furukawa
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Publication number: 20160150946Abstract: 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: ApplicationFiled: February 4, 2016Publication date: June 2, 2016Applicant: OLYMPUS CORPORATIONInventors: Masayo TSUMARU, Toshio NAKAMURA, Tatsuya FURUKAWA, Koji YAMAYA, Seiji SAITO, Tetsuhiro YAMADA, Kahori YASUNAGA
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Publication number: 20150315921Abstract: 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: ApplicationFiled: July 14, 2015Publication date: November 5, 2015Inventors: Yuichi HIRAKAWA, Yoshikuni KADOYA, Hiroharu OOYAMA, Tatsuya FURUKAWA, Naoto TOCHITANI
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Publication number: 20150204659Abstract: 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: ApplicationFiled: January 16, 2015Publication date: July 23, 2015Inventor: Tatsuya FURUKAWA
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Patent number: 8303487Abstract: 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: GrantFiled: May 31, 2007Date of Patent: November 6, 2012Assignee: Olympus CorporationInventors: Haruhiko Ueno, Tatsuya Ishizuka, Yuichi Ikeda, Tatsuya Furukawa, Yutaka Masaki, Masanobu Koitabashi, Noriaki Kanazawa
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Patent number: 8000915Abstract: 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: GrantFiled: April 20, 2009Date of Patent: August 16, 2011Assignee: Panasonic EV Energy Co., Ltd.Inventors: Tatsuya Furukawa, Naoto Sato
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Patent number: 7828723Abstract: 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: GrantFiled: June 1, 2007Date of Patent: November 9, 2010Assignee: Olympus CorporationInventors: Haruhiko Ueno, Yuichi Ikeda, Tatsuya Ishizuka, Tatsuya Furukawa, Yutaka Masaki, Masanobu Koitabashi, Noriaki Kanazawa