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公开(公告)号：US20200069287A1
公开(公告)日：2020-03-05
申请号：US16361605
申请日：2019-03-22
Applicant: Hitachi, Ltd.
Inventor： Hiroaki HASEGAWA , Kengo IMAGAWA , Shuntaro MACHIDA , Taiichi TAKEZAKI
Abstract: Capacitors, each of which is electrically connected to a capacitor which is the cell of the CMUT mounted in a chip and is used as a DC block capacitor for protecting an amplifying circuit, are formed as many as plural aligned channels in the chip. The capacitor is an electrostatic capacitance element which is not vibrated acoustically.
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公开(公告)号：US20180279990A1
公开(公告)日：2018-10-04
申请号：US15938525
申请日：2018-03-28
Applicant: HITACHI, LTD.
Inventor： Hiroaki HASEGAWA , Hiroki TANAKA
Abstract: The ultrasonic image pickup apparatus includes a transmission/reception control unit that transmits an ultrasonic wave by applying a DC bias voltage and an AC driving voltage between electrodes of the electrostatic capacity type micro-machined ultrasonic transducer and picks up an image by transmitting and receiving two or more kinds of ultrasonic waveforms which have different signs, amplitudes, or phases from each other for one scanning line. In addition, as the AC driving voltage, the ultrasonic image pickup apparatus uses a voltage waveform that is obtained by adding a high frequency pulse waveform and a low frequency waveform that has a longer cycle than that of the high frequency pulse waveform and has such a voltage amplitude as makes the total voltage of the low frequency waveform and the DC bias voltage is equal or smaller than a pull-in voltage.
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公开(公告)号：US20220333515A1
公开(公告)日：2022-10-20
申请号：US17639748
申请日：2020-03-26
Applicant: HITACHI, LTD.
Inventor： Hiroaki HASEGAWA , Yuzo SHIRAKAWA , Hiroto NAITO , Takao ISHIKAWA
Abstract: Provided is a device that uses a high-temperature exhaust gas released from an internal combustion engine to produce a fuel. The present invention relates to the fuel production device including the internal combustion engine, an electrolysis device connected to the internal combustion engine, and a hydrogenation reactor connected to the electrolysis device, wherein the electrolysis device is a device for decomposing high-temperature water vapor contained in the exhaust gas from the internal combustion engine into hydrogen and oxygen, and the hydrogenation reactor is a device for converting the hydrogen resulting from the decomposition to the fuel.
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公开(公告)号：US20220292582A1
公开(公告)日：2022-09-15
申请号：US17638945
申请日：2020-03-27
Applicant: HITACHI, LTD.
Inventor： Hiroto NAITO , Yuzo SHIRAKAWA , Hiroaki HASEGAWA
Abstract: The present disclosure provides a fuel trading coordination technique that enables certification processes taking account of a supply chain for a fuel, such as hydrogen, and that meets fuel users' demands while ensuring their convenience. A fuel trading coordination device according to the present disclosure includes a storage device storing information of a plurality of fuel suppliers, and a controller that processes an order for purchasing a mix of a first type fuel and a second type fuel, the order being placed by a first type fuel user. The first type fuel and the second type fuel are fuels that are different in production method but can be used for the same purpose. The controller sends information of the order of the first type fuel user to a first supplier that supplies the first type fuel and to a second supplier that supplies the second type fuel.
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公开(公告)号：US20200070205A1
公开(公告)日：2020-03-05
申请号：US16534012
申请日：2019-08-07
Applicant: Hitachi, Ltd.
Inventor： Taiichi TAKEZAKI , Hiroaki HASEGAWA , Shuntaro MACHIDA
Abstract: A capacitive device includes a unit cell including a CMUT, and a transmission/reception plate for impedance matching which is provided above the unit cell via a connection portion, in which a membrane of the CMUT constituting the unit cell is connected to the transmission/reception plate via the connection portion having an area smaller than that of the transmission/reception plate. The area of the transmission/reception plate is desirably larger than the area of a hollow portion of the CMUT.
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Patent Agency Ranking
公开(公告)号：US20190321000A1
公开(公告)日：2019-10-24
申请号：US16245605
申请日：2019-01-11
Applicant: HITACHI, LTD.
Inventor： Taiichi TAKEZAKI , Hiroaki HASEGAWA , Shuntaro MACHIDA , Ryo IMAI , Tomohiko TANAKA
Abstract: Performance of an ultrasonic examination device, which includes an ultrasonic sensor of a capacitance detection type including a cavity between electrodes and vibrating a membrane, is enhanced. A cell which is a capacitive type device provided with a lower electrode, a cavity, and an upper electrode in a membrane, which are stacked in a longitudinal direction, and a condenser provided with the lower electrode and an upper electrode which are stacked in the longitudinal direction, are formed in one semiconductor chip. The cell and the condenser are connected to each other in parallel, and, when ultrasonic waves are transmitted and received using the cell, connection between a DC bias power source and the semiconductor chip is blocked, and a direct current voltage is applied to the cell from the condenser.
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公开(公告)号：US20190310161A1
公开(公告)日：2019-10-10
申请号：US16193003
申请日：2018-11-16
Applicant: Hitachi, Ltd.
Inventor： Keiji WATANABE , Hiroaki HASEGAWA , Hisanori MATSUMOTO , Daisuke RYUZAKI
Abstract: A sensor system that detects a vibration of a rotating part with a high accuracy even in a case in which a sensor is additionally attached is provided. The invention is directed to a sensor system includes a board that is installed in a rotating part of a cut processing machine; a plurality of acceleration sensors mounted on the board, and a signal processing unit (arithmetic operation). The signal processing unit detects a translational acceleration accompanying moving of the rotating part and a centrifugal acceleration accompanying rotation of the rotating part on the basis of acceleration data detected by each of the acceleration sensors.
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公开(公告)号：US20190118222A1
公开(公告)日：2019-04-25
申请号：US16090948
申请日：2017-07-07
Applicant: HITACHI, LTD.
Inventor： Hiroaki HASEGAWA , Shuntaro MACHIDA , Taiichi TAKEZAKI , Daisuke RYUZAKI
Abstract: An ultrasonic transducer includes: a hollow portion 110 formed between insulating films 104 and 106 interposed between a lower electrode 103 and an upper electrode 107 above a substrate 101; and a membrane 120 that is configured of insulating films 106, 108, 111, and 112 and the upper electrode 107 above the hollow portion 110 and vibrates at a time of transmission/reception of ultrasonic wave. Also, the hollow portion 110 has a cross-sectional shape according to which a relationship of h1>h2>0 is established when a thickness of a center portion is given as h1 and a thickness of an outer peripheral portion is given as h2.
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公开(公告)号：US20190167229A1
公开(公告)日：2019-06-06
申请号：US16209525
申请日：2018-12-04
Applicant: HITACHI, LTD.
Inventor： Taiichi TAKEZAKI , Shuntaro MACHIDA , Hiroaki HASEGAWA , Tomohiko TANAKA , Ryo IMAI , Yoshiho SEO , Takahiro MATSUDA , Shinsuke ONOE
Abstract: An ultrasound imaging probe capable of securing an assembly accuracy of and improving a resolution performance of an obtained image is provided. A photoacoustic catheter includes: a silicon substrate which includes an ultrasonic transducer for detecting an ultrasonic wave formed thereon and a through hole passing through front and rear surfaces; an optical fiber which oscillates a laser; a lens which condenses the laser and is arranged within the through hole; a tubular housing; a glass cover which covers the lens; and a resin which fills a gap between the through hole and the lens. Further, the silicon substrate and the optical fiber are fixed to a part of the housing in the housing.
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10.发明申请公开(公告)号：US20180161813A1
公开(公告)日：2018-06-14
申请号：US15579383
申请日：2015-06-04
Applicant: HITACHI, LTD.
Inventor： Hiroaki HASEGAWA , Taiichi TAKEZAKI , Shuntaro MACHIDA , Daisuke RYUZAKI
CPC classification number: B06B1/0292 , A61B8/4483 , B81B3/0037 , B81B2201/0271 , B81B2203/0315 , B81B2207/053 , G01N29/2406 , H03H9/174 , H03H9/24 , H04R19/00 , H04R31/00
Abstract: An ultrasonic transducer element includes a substrate, a lower electrode on a first surface of the substrate, a first insulating film on the lower electrode, a first cavity layer on the first insulating film, a second insulating film on the first cavity layer, an upper electrode on the second insulating film that overlaps the first cavity layer, a third insulating film on the upper electrode, a second cavity layer on the third insulating film, a fourth insulating film on the second cavity layer, a fixing portion formed by the second to fourth insulating films, a movable portion in a membrane insides the second cavity layer, a first connection portion and a second connection portion that are stacked with a gap and the connection portions are configured by the second to fourth insulating films connecting the movable portion and the fixing portion.
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