Patents by Inventor Tetsuya Itou
Tetsuya Itou 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: 12036059Abstract: In a method for diagnosing and treating a patient having lesions in both arteries of left and right lower limbs. By determining that a lesion distal to an aortailiac bifurcation is to be treated first, catheters and an operation time can be reduced. The lesion to be treated first can be on a priority basis based on diagnostic data, deciding that a lesion proximal to the bifurcation is to be treated next, and then treating the lesions substantially continuously.Type: GrantFiled: May 31, 2022Date of Patent: July 16, 2024Assignee: TERUMO KABUSHIKI KAISHAInventors: Yoshitaka Itou, Yoshiyuki Saito, Shota Ishii, Tetsuya Fukuoka
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Patent number: 10731770Abstract: An actuator includes a rod, an electric motor to generate a rotational driving force on supply of electricity, an output shaft to output the rotational driving force of the electric motor to the rod, a feed screw mechanism, and a rotation prevention mechanism. The feed screw mechanism includes a female screw portion formed on one of the output shaft and the rod, and a male screw portion formed on the other to mesh with the female screw portion. The rotation prevention mechanism is configured to regulate rotation of the rod caused by the rotational driving force of the electric motor.Type: GrantFiled: July 7, 2016Date of Patent: August 4, 2020Assignees: DENSO CORPORATION, SOKEN, INC.Inventors: Yasuhiro Kawase, Yukikatsu Ozaki, Mikio Matsuda, Tetsuya Itou, Sadahisa Onimaru, Hiroki Ishii
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Patent number: 10520231Abstract: A first valve member switches between a first communication state, in which a first inlet passage communicates with a first outlet passage and a second inlet passage is closed, and a second communication state, in which the second inlet passage communicates with the first outlet passage and the first inlet passage is closed. A second valve member switches between an opening state and a throttle state in which a smaller volume of a fluid flows from the third inlet passage to the second outlet passage as compared to the opening state. A valve driving member switches between a first operation state, in which the first valve member sets the first communication state and the second valve member sets the opening state, and a second operation state, in which the first valve member sets the second communication state and the second valve member sets the throttle state.Type: GrantFiled: June 29, 2016Date of Patent: December 31, 2019Assignee: DENSO CORPORATIONInventors: Tetsuya Itou, Masaaki Kawakubo
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Patent number: 10391839Abstract: A refrigeration cycle device includes a pre-evaporator decompression unit that decompresses refrigerant which flowed out from an exterior heat exchanger, and an evaporator passage that guides the refrigerant which flowed out from the exterior heat exchanger to a suction port of a compressor while passing through a pre-evaporator decompression unit and an evaporator. Further, the refrigeration cycle device includes a bypass passage that guides the refrigerant which flowed out from the exterior heat exchanger to the suction port of the compressor while bypassing the pre-evaporator decompression unit and the evaporator, a pre-exterior device switching unit, and a passage switching unit that opens and closes the bypass passage. Further, the pre-exterior device switching unit and the passage switching unit form a coupled valve where the pre-exterior device switching unit and the passage switching unit are mechanically coupled.Type: GrantFiled: July 20, 2016Date of Patent: August 27, 2019Assignee: DENSO CORPORATIONInventors: Masaaki Kawakubo, Tetsuya Itou, Satoshi Itoh
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Publication number: 20180222289Abstract: A refrigeration cycle device includes a pre-evaporator decompression unit that decompresses refrigerant which flowed out from an exterior heat exchanger, and an evaporator passage that guides the refrigerant which flowed out from the exterior heat exchanger to a suction port of a compressor while passing through a pre-evaporator decompression unit and an evaporator. Further, the refrigeration cycle device includes a bypass passage that guides the refrigerant which flowed out from the exterior heat exchanger to the suction port of the compressor while bypassing the pre-evaporator decompression unit and the evaporator, a pre-exterior device switching unit, and a passage switching unit that opens and closes the bypass passage. Further, the pre-exterior device switching unit and the passage switching unit form a coupled valve where the pre-exterior device switching unit and the passage switching unit are mechanically coupled.Type: ApplicationFiled: July 20, 2016Publication date: August 9, 2018Inventors: Masaaki KAWAKUBO, Tetsuya ITOU, Satoshi ITOH
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Publication number: 20180202569Abstract: An actuator includes a rod, an electric motor to generate a rotational driving force on supply of electricity, an output shaft to output the rotational driving force of the electric motor to the rod, a feed screw mechanism, and a rotation prevention mechanism. The feed screw mechanism includes a female screw portion formed on one of the output shaft and the rod, and a male screw portion formed on the other to mesh with the female screw portion. The rotation prevention mechanism is configured to regulate rotation of the rod caused by the rotational driving force of the electric motor.Type: ApplicationFiled: July 7, 2016Publication date: July 19, 2018Applicants: Nippon Soken, Inc., Denso CorporationInventors: Yasuhiro KAWASE, Yukikatsu OZAKI, Mikio MATSUDA, Tetsuya ITOU, Sadahisa ONIMARU, Hiroki ISHII
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Publication number: 20180195780Abstract: A first valve member switches between a first communication state, in which a first inlet passage communicates with a first outlet passage and a second inlet passage is closed, and a second communication state, in which the second inlet passage communicates with the first outlet passage and the first inlet passage is closed. A second valve member switches between an opening state and a throttle state in which a smaller volume of a fluid flows from the third inlet passage to the second outlet passage as compared to the opening state. A valve driving member switches between a first operation state, in which the first valve member sets the first communication state and the second valve member sets the opening state, and a second operation state, in which the first valve member sets the second communication state and the second valve member sets the throttle state.Type: ApplicationFiled: June 29, 2016Publication date: July 12, 2018Inventors: Tetsuya ITOU, Masaaki KAWAKUBO
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Publication number: 20180023835Abstract: An expansion valve device has a housing, a valve body, an actuator, a first, second, and third detectors, and a controller. The housing defines a first refrigerant path and a second refrigerant path therein. The first detector detects a temperature of the refrigerant flowing in the first refrigerant path. The second detector detects a temperature and a pressure of the refrigerant flowing on an upstream side of the valve body in the second refrigerant path. The third detector detects a temperature or a pressure of the refrigerant flowing on a downstream side of the valve body in the second refrigerant path. The controller calculates a flow rate of the refrigerant flowing in the second refrigerant path and a superheating degree of the refrigerant flowing in the first refrigerant path, and controls the opening degree of the valve body such that the superheating degree falls within a specified range.Type: ApplicationFiled: March 10, 2016Publication date: January 25, 2018Inventors: Mitsuo OOURA, Tatsuhiro MATSUKI, Tetsuya ITOU
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Patent number: 9683761Abstract: In an integration valve, a body, in which a vapor-liquid separating space is provided, includes a fixed throttle decompressing liquid-phase refrigerant, a liquid-phase refrigerant side valve body member opening or closing a liquid-phase refrigerant passage, and a vapor-phase refrigerant side valve body member opening or closing a vapor-phase refrigerant passage. Further, the vapor-phase refrigerant side valve body member is configured by a differential pressure regulating valve operated based on a pressure difference between a refrigerant pressure at a side of the vapor-phase refrigerant passage and a refrigerant pressure at a side of the liquid-phase refrigerant passage. The vapor-phase refrigerant side valve body member is movable when the liquid-phase refrigerant side valve body member is moved by a solenoid. Therefore, a cycle configuration of a heat pump cycle configuring a gas injection cycle can be simplified.Type: GrantFiled: October 2, 2012Date of Patent: June 20, 2017Assignee: DENSO CORPORATIONInventors: Tetsuya Itou, Teruyuki Hotta, Atsushi Inaba, Yukihiko Takeda, Shigeji Ohishi, Keiichi Yoshii
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Publication number: 20160290525Abstract: In a first expansion valve, a pair of fitting side surfaces, which are formed in a screw member, is opposed to a pair of groove side surfaces, respectively, which are formed in a rotatable member. The fitting side surfaces are rotated about an axis by the groove side surfaces. An overlapping width, throughout which the groove side surface and the fitting side surface are overlapped with each other, is larger than a female-thread inner diameter of a threaded hole, into which the screw member is threadably engaged.Type: ApplicationFiled: June 30, 2014Publication date: October 6, 2016Inventors: Teruyuki HOTTA, Tetsuya ITOU, Yusuke ARAI, Hitoshi UMEZAWA
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Patent number: 9109823Abstract: A vapor-liquid separating space is provided in a body. The body houses a fixed throttle-decompressing liquid-phase refrigerant, and an integration valve member selectively opening or closing a liquid-phase refrigerant passage and a vapor-phase refrigerant passage. The integration valve member is moved by a stepping motor connected to the integration valve member via a shaft. Accordingly, a cycle configuration of a heat pump cycle working as a gas injection cycle can be simplified.Type: GrantFiled: October 2, 2012Date of Patent: August 18, 2015Assignee: DENSO CORPORATIONInventors: Tetsuya Itou, Yukihiko Takeda, Teruyuki Hotta, Atsushi Inaba, Keiichi Yoshii, Shigeji Ohishi
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Patent number: 9099545Abstract: A compound semiconductor device includes a substrate; a compound semiconductor layer formed on the substrate; a first insulating film formed on the compound semiconductor layer; a second insulating film formed on the first insulating film; and a gate electrode, a source electrode, and a drain electrode, each being formed on the compound semiconductor layer, wherein the gate electrode is formed of a first opening filled with a first conductive material via at least a gate insulator, and the first opening is formed in the first insulating film and configured to partially expose the compound semiconductor layer, and wherein the source electrode and the drain electrode are formed of a pair of second openings filled with at least a second conductive material, and the second openings are formed in at least the second insulating film and the first insulating film and configured to partially expose the compound semiconductor layer.Type: GrantFiled: September 23, 2013Date of Patent: August 4, 2015Assignee: Transphorm Japan, Inc.Inventors: Shinichi Akiyama, Kenji Nukui, Mutsumi Katou, Yoshitaka Watanabe, Tetsuya Itou, Yoichi Fujisawa, Toshiya Sato, Tsutomu Hosoda, Yuuichi Satou
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Publication number: 20150052242Abstract: An information processing system includes a plurality of information processing apparatuses and a controller that controls the information processing apparatuses. The controller includes a selector that selects one of the information processing apparatuses, as a collecting unit, each of the information processing apparatus including a retriever that retrieves historical information items from the other information processing apparatuses, the retriever being operable after the information processing apparatus is assigned as the collecting unit; and a collector that collects the historical information items to generate collected information.Type: ApplicationFiled: July 16, 2014Publication date: February 19, 2015Inventor: Tetsuya ITOU
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Publication number: 20140290772Abstract: A vapor-liquid separating space is provided in a body. The body houses a fixed throttle-decompressing liquid-phase refrigerant, and an integration valve member selectively opening or closing a liquid-phase refrigerant passage and a vapor-phase refrigerant passage. The integration valve member is moved by a stepping motor connected to the integration valve member via a shaft. Accordingly, a cycle configuration of a heat pump cycle working as a gas injection cycle can be simplified.Type: ApplicationFiled: October 2, 2012Publication date: October 2, 2014Applicant: DENSO CORPORATIONInventors: Tetsuya Itou, Yukihiko Takeda, Teruyuki Hotta, Atsushi Inaba, Keiichi Yoshii, Shigeji Ohishi
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Publication number: 20140238067Abstract: In an integration valve, a body, in which a vapor-liquid separating space is provided, includes a fixed throttle decompressing liquid-phase refrigerant, a liquid-phase refrigerant side valve body member opening or closing a liquid-phase refrigerant passage, and a vapor-phase refrigerant side valve body member opening or closing a vapor-phase refrigerant passage. Further, the vapor-phase refrigerant side valve body member is configured by a differential pressure regulating valve operated based on a pressure difference between a refrigerant pressure at a side of the vapor-phase refrigerant passage and a refrigerant pressure at a side of the liquid-phase refrigerant passage. The vapor-phase refrigerant side valve body member is movable when the liquid-phase refrigerant side valve body member is moved by a solenoid. Therefore, a cycle configuration of a heat pump cycle configuring a gas injection cycle can be simplified.Type: ApplicationFiled: October 2, 2012Publication date: August 28, 2014Applicant: DENSO CORPORATIONInventors: Tetsuya Itou, Teruyuki Hotta, Atsushi Inaba, Yukihiko Takeda, Shigeji Ohishi, Keiichi Yoshii
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Patent number: 8769984Abstract: A decompression device includes an upstream throttle portion, a middle passage portion and a downstream throttle portion, which are arranged within a body portion. The upstream throttle portion is a variable throttle including an upstream throttle passage in which the refrigerant is decompressed and expanded, and a valve body having an open degree adjusting portion configured to adjust an open degree of the upstream throttle passage. The downstream throttle portion is a fixed throttle for decompressing and expanding refrigerant flowing from the middle passage portion. Furthermore, a refrigerant passage defined from the upstream throttle portion to the downstream throttle portion through the middle passage portion is provided in the body portion, and is bent at least at a bent portion in which the refrigerant flow is bent in the body portion.Type: GrantFiled: December 22, 2010Date of Patent: July 8, 2014Assignee: Denso CorporationInventors: Tetsuya Itou, Teruyuki Hotta, Atsushi Inaba
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Publication number: 20140077633Abstract: A vehicle includes a motor, a driving device, and a cooling device. The motor includes a motor main body and a winding switching unit. The motor main body includes windings and a first coolant channel to cool said windings. The winding switching unit is disposed on an outer surface of said motor main body and includes heat-generating components and a second coolant channel. The heat-generating components are used to switch said windings. The second coolant channel is to cool said heat-generating components. The driving device is configured to control switching of said winding switching unit and configured to apply driving voltage to said windings, the drive device including a third coolant channel. The cooling device is to cool coolant that flows through said first coolant channel, said second coolant channel and said third coolant channel.Type: ApplicationFiled: November 18, 2013Publication date: March 20, 2014Applicant: KABUSHIKI KAISHA YASKAWA DENKIInventors: Toshio NAGAO, Yuuto FUKUMA, Takeshi INOUE, Tetsuya ITOU
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Publication number: 20140021513Abstract: A compound semiconductor device includes a substrate; a compound semiconductor layer formed on the substrate; a first insulating film formed on the compound semiconductor layer; a second insulating film formed on the first insulating film; and a gate electrode, a source electrode, and a drain electrode, each being formed on the compound semiconductor layer, wherein the gate electrode is formed of a first opening filled with a first conductive material via at least a gate insulator, and the first opening is formed in the first insulating film and configured to partially expose the compound semiconductor layer, and wherein the source electrode and the drain electrode are formed of a pair of second openings filled with at least a second conductive material, and the second openings are formed in at least the second insulating film and the first insulating film and configured to partially expose the compound semiconductor layer.Type: ApplicationFiled: September 23, 2013Publication date: January 23, 2014Applicant: FUJITSU SEMICONDUCTOR LIMITEDInventors: Shinichi AKIYAMA, Kenji NUKUI, Mutsumi KATOU, Yoshitaka WATANABE, Tetsuya ITOU, Yoichi FUJISAWA, Toshiya SATO, Tsutomu HOSODA, Yuuichi SATOU
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Patent number: 8614527Abstract: This disclosure discloses a motor comprising: a motor main body; and a winding switching unit configured to switch windings of the motor main body; the motor main body including: a motor housing that a first coolant channel is formed inside; and a stator having the windings and fixed to an inner surface of the motor housing, the winding switching unit including: a winding switching housing that a second coolant channel is formed inside and being disposed on an outer surface of the motor housing, and heat-generating components disposed at an outer surface of the winding switching housing and used to switch the windings.Type: GrantFiled: January 7, 2011Date of Patent: December 24, 2013Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Toshio Nagao, Yuuto Fukuma, Takeshi Inoue, Tetsuya Itou
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Patent number: 8569124Abstract: A compound semiconductor device includes a substrate; a compound semiconductor layer formed on the substrate; a first insulating film formed on the compound semiconductor layer; a second insulating film formed on the first insulating film; and a gate electrode, a source electrode, and a drain electrode, each being formed on the compound semiconductor layer, wherein the gate electrode is formed of a first opening filled with a first conductive material via at least a gate insulator, and the first opening is formed in the first insulating film and configured to partially expose the compound semiconductor layer, and wherein the source electrode and the drain electrode are formed of a pair of second openings filled with at least a second conductive material, and the second openings are formed in at least the second insulating film and the first insulating film and configured to partially expose the compound semiconductor layer.Type: GrantFiled: April 19, 2011Date of Patent: October 29, 2013Assignee: Fujitsu Semiconductor LimitedInventors: Shinichi Akiyama, Kenji Nukui, Mutsumi Katou, Yoshitaka Watanabe, Tetsuya Itou, Yoichi Fujisawa, Toshiya Sato, Tsutomu Hosoda, Yuuichi Satou