Patents by Inventor Tetsuya Ishiguro
Tetsuya Ishiguro 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: 11951729Abstract: A laminated sheet includes a first porous layer including a plurality of fibers of at least one of inorganic fiber or carbonized fiber; and a second porous layer formed of a plurality of organic fibers, wherein the laminated sheet has a surface density of greater than or equal to 400 g/m2 and less than or equal to 1550 g/m2, wherein the second porous layer is formed of the plurality of organic fibers having a mean diameter of fibers being greater than or equal to 0.5 ?m and less than or equal to 14 ?m, and wherein, expressing a total volume of solids and voids filling a unit volume of the second porous layer as 100%, a percentage of the solids is greater than or equal to 1.0% and less than or equal to 8.0%.Type: GrantFiled: May 30, 2019Date of Patent: April 9, 2024Assignee: NITTO DENKO CORPORATIONInventors: Shigeki Ishiguro, Kayo Shimokawa, Tetsuya Otsuka, Hidetoshi Maikawa
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Publication number: 20240094459Abstract: An optical waveguide includes a diamond layer including a first surface, a second surface and a diamond layer including a complex defect; a first clad layer in contact with the first surface; a second clad layer in contact with the second surface and including a polarity; and a metal layer in Schottky contact with the second clad layer.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: FUJITSU LIMITEDInventors: Tetsuro ISHIGURO, Tetsuya MIYATAKE, Kenichi KAWAGUCHI, Toshiki IWAI, Yoshiyasu DOI, Shintaro SATO
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Patent number: 11916164Abstract: A method for manufacturing a light-emitting element includes providing the light-emitting element that includes a light-emitting layer with an emission wavelength of not more than 306 nm and a p-type layer including AlGaInN including Mg as an acceptor, and removing hydrogen in the p-type layer from the light-emitting element by irradiating the light-emitting element with ultraviolet light at a wavelength of not more than 306 nm from outside and treating the light-emitting element with heat in a state in which a reverse voltage, or a forward voltage lower than a threshold voltage of the light-emitting element, or no voltage is applied to the light-emitting element. The removing of hydrogen in the p-type layer from the light-emitting element is performed in a N2 atmosphere at not less than 650° C. or in a N2+O2 atmosphere at not less than 500° C.Type: GrantFiled: December 29, 2021Date of Patent: February 27, 2024Assignees: TOYODA GOSEI CO., LTD., MEIJO UNIVERSITYInventors: Yoshiki Saito, Shinya Boyama, Shinichi Matsui, Hiroshi Miwa, Kengo Nagata, Tetsuya Takeuchi, Hisanori Ishiguro
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Patent number: 10630194Abstract: A power conversion device includes an input current sensor, an input voltage sensor, a power converter, an output voltage sensor for detecting an output voltage from the power converter, an output current sensor for detecting an output current value from the power converter, and a controller for controlling the power converter. The controller obtains an allowable current value that can be accepted from an external alternating current power source, and, controls the power converter so that the input current value does not exceed the allowable current value based on an input current value detected by the input current sensor. The controller detects an abnormality in the power conversion device based on the input current value, the input voltage, the output current value, the output voltage, and power conversion efficiency of the power converter.Type: GrantFiled: February 17, 2016Date of Patent: April 21, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Atsushi Iisaka, Tetsuya Ishiguro
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Publication number: 20180026546Abstract: A power conversion device includes an input current sensor, an input voltage sensor, a power converter, an output voltage sensor for detecting an output voltage from the power converter, an output current sensor for detecting an output current value from the power converter, and a controller for controlling the power converter. The controller obtains an allowable current value that can be accepted from an external alternating current power source, and, controls the power converter so that the input current value does not exceed the allowable current value based on an input current value detected by the input current sensor. The controller detects an abnormality in the power conversion device based on the input current value, the input voltage, the output current value, the output voltage, and power conversion efficiency of the power converter.Type: ApplicationFiled: February 17, 2016Publication date: January 25, 2018Inventors: ATSUSHI IISAKA, TETSUYA ISHIGURO
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Patent number: 9592726Abstract: An active vibration isolating support apparatus reduces vibration transmitted from a reciprocating engine. The apparatus supports the engine via vibration isolating support units each of which includes an actuator. The vibration isolating units are disposed on opposite sides of a crankshaft of the engine. The apparatus includes a control unit to make the actuator extend and contract periodically depending on a vibrational state of the engine so as to reduce the transmission of engine vibrations to a vehicle body. The control unit drives the actuator of one of the vibration isolating support units to contract, the one of the vibration isolating support units being compressed by roll vibration associated with an initial explosion after a time when the engine starts, so as to reduce transmission of roll vibration in a direction which is reverse to the rotation direction of the crankshaft.Type: GrantFiled: May 14, 2014Date of Patent: March 14, 2017Assignee: Honda Motor Co., Ltd.Inventors: Tetsuya Ishiguro, Hirotomi Nemoto, Shungo Fueki
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Publication number: 20140249733Abstract: An active vibration isolating support apparatus reduces vibration transmitted from a reciprocating engine. The apparatus supports the engine via vibration isolating support units each of which includes an actuator. The vibration isolating units are disposed on opposite sides of a crankshaft of the engine. The apparatus includes a control unit to make the actuator extend and contract periodically depending on a vibrational state of the engine so as to reduce the transmission of engine vibrations to a vehicle body. The control unit drives the actuator of one of the vibration isolating support units to contract, the one of the vibration isolating support units being compressed by roll vibration associated with an initial explosion after a time when the engine starts, so as to reduce transmission of roll vibration in a direction which is reverse to the rotation direction of the crankshaft.Type: ApplicationFiled: May 14, 2014Publication date: September 4, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Tetsuya ISHIGURO, Hirotomi NEMOTO, Shungo FUEKI
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Patent number: 8775019Abstract: In an active anti-vibration supporting device (301), an ACM_ECU (200) for estimating an engine vibration state by using output data from a crank pulse sensor (Sa) and a TDC sensor (Sb) drives a driving unit (41) so as to extend and contract and thereby suppresses the transmission of vibration. The ACM_ECU (200) calculates the number of STGs (S1F) that is a quotient obtained when dividing the phase delay (P1F) of a target current value waveform by an average STG time ((T1)/4) in a first cycle (C1) of engine vibration and the remaining time (P?1F) of the phase delay (P1F), wherein the target current value waveform is used for suppressing the transmission of the engine vibration calculated using the output data from the crank pulse sensor (Sa) and the TDC sensor (Sb). The timing at which the elapse of the STG time equivalent to the number of STGs (S1F) in a third cycle (C3) of the engine vibration in the driving timing of the driving unit has been detected is set as a phase delay reference.Type: GrantFiled: July 5, 2010Date of Patent: July 8, 2014Assignee: Honda Motor Co., Ltd.Inventors: Hideyuki Okamoto, Tetsuya Ishiguro
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Patent number: 8763996Abstract: A method includes the steps of: detecting “starter ON” by IG-SW signal (step S12); calculating an moving average value TCRKAVE of crank pulse intervals (steps S13-S17); determining engine starting when the TCRKAVE is less than or equal to a threshold value Tth (step S19); and controlling a vibration isolating support unit M based on a natural vibration frequency of the engine when engine starting is determined (steps S20-S22).Type: GrantFiled: August 8, 2008Date of Patent: July 1, 2014Assignee: Honda Motor Co., Ltd.Inventors: Tetsuya Ishiguro, Hirotomi Nemoto, Shungo Fueki
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Patent number: 8474801Abstract: A solenoid driving device with excellent electric power efficiency which drives and controls an actuator including a solenoid and an active vibration isolating support device which includes the solenoid driving device are disclosed. The solenoid driving device includes a booster circuit which boosts a battery voltage, and driving circuits which an actuator with the electric power supplied and boosted by the booster circuit. ACM_ECU200A including a micro computer calculates the magnitude of the vibration of the engine, an engine vibration cycle and a phase lag to obtain the drive frequency of the actuator in the vibration state estimating unit and the phase detecting unit. A booster circuit controlling unit of the micro computer determines the target voltage based on the drive frequency. The target voltage is input to the booster circuit, and the booster circuit supplies the required electric power to the driving circuits at the target voltage.Type: GrantFiled: March 26, 2010Date of Patent: July 2, 2013Assignee: Honda Motor Co., Ltd.Inventors: Tetsuya Ishiguro, Tatsuhiro Yone
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Patent number: 8444124Abstract: The natural vibration frequency of a roll resonance which does not occur since the engine rotation number is high in a normal operation range of an engine is detected at the time of engine start or stop when the engine rotation number is lower than the normal operation range, and thus the natural vibration frequency of the roil resonance can be detected with a good accuracy.Type: GrantFiled: August 11, 2008Date of Patent: May 21, 2013Assignee: Honda Motor Co., Ltd.Inventors: Shungo Fueki, Tetsuya Ishiguro, Hiroaki Ue, Hirotomi Nemoto, Tatsuhiro Yone
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Publication number: 20120109457Abstract: In an active anti-vibration supporting device (301), an ACM_ECU (200) for estimating an engine vibration state by using output data from a crank pulse sensor (Sa) and a TDC sensor (Sb) drives a driving unit (41) so as to extend and contract and thereby suppresses the transmission of vibration. The ACM_ECU (200) calculates the number of STGs (S1F) that is a quotient obtained when dividing the phase delay (P1F) of a target current value waveform by an average STG time ((T1)/4) in a first cycle (C1) of engine vibration and the remaining time (P?1F) of the phase delay (P1F), wherein the target current value waveform is used for suppressing the transmission of the engine vibration calculated using the output data from the crank pulse sensor (Sa) and the TDC sensor (Sb). The timing at which the elapse of the STG time equivalent to the number of STGs (S1F) in a third cycle (C3) of the engine vibration in the driving timing of the driving unit has been detected is set as a phase delay reference.Type: ApplicationFiled: July 5, 2010Publication date: May 3, 2012Applicant: HONDA MOTOR CO., LTD.Inventors: Hideyuki Okamoto, Tetsuya Ishiguro
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Patent number: 8024107Abstract: An ignition timing control system for an internal combustion engine, which is capable of ensuring both stability of control in a steady operating condition of the engine, and an excellent follow-up property of a controlled variable to a target value in a transient operating condition of the engine, even when the controlled variable contains a lot of high-frequency noise components. In the ignition timing control system, a maximum pressure angle-calculating section calculates a maximum pressure angle based on an in-cylinder pressure and a crank angle position. A target angle-calculating section calculates a target angle. A maximum pressure angle controller calculates a maximum pressure angle correction term with a control algorithm to which is applied a sliding mode control algorithm, using a value obtained by performing ?-filtering on a switching function, such that the maximum pressure angle converges to the target angle. The ignition timing is calculated by adding corrected ignition timing to the value.Type: GrantFiled: August 30, 2007Date of Patent: September 20, 2011Assignee: Honda Motor Co., Ltd.Inventors: Takahide Mizuno, Shusuke Akazaki, Tetsuya Ishiguro
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Patent number: 7913384Abstract: A method of preparing a wire harness production by providing standard wiring pattern information related to a first pattern including parts, electric circuits and wirings of a standard type vehicle, and generating modified wiring pattern information related to at least another pattern in which at least one of the parts, the electric circuits, and the wirings of a first pattern is altered.Type: GrantFiled: December 15, 2004Date of Patent: March 29, 2011Assignee: Yazaki CorporationInventors: Kenichiro Akizuki, Shuji Ono, Tetsuya Ishiguro, Masaya Uchida, Yasuhiro Mochizuki, Eiji Asaoka, Takeshi Ishikawa
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Patent number: 7915842Abstract: An active vibration isolation support system includes an electronic control unit which supplies a target electric current to an actuator to periodically drive the actuator in an expansion and contraction manner with a target vibration waveform. The controller sets the target electric current by synthesizing a driving primary electric current waveform corresponding to the target vibration waveform for the actuator with higher-order (driving secondary and/or tertiary) electric current waveforms which eliminate higher-order vibration components of the actuator corresponding to the driving primary electric current waveform. It is possible to alleviate a calculating load in the electronic control unit by ignoring the quaternary and still higher-order vibration components which less affect the target vibration waveform for the actuator.Type: GrantFiled: August 1, 2005Date of Patent: March 29, 2011Assignee: Honda Motor Co., Ltd.Inventors: Hirotomi Nemoto, Tetsuya Ishiguro
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Patent number: 7909018Abstract: A control for determining a firing timing of an engine is provided. An in-cylinder pressure is detected at a predetermined time interval. An in-cylinder pressure for every predetermined crank angle is calculated based on the detected in-cylinder pressure. A motoring pressure in a case where combustion is not performed in the engine is estimated. It is detected that a pressure difference between the calculated in-cylinder pressure and the motoring pressure has exceeded a determination value. A time point is identified, as a firing timing, at which the pressure difference has exceeded a determination value with a finer resolution than the resolution of the predetermined crank angle interval through an interpolation calculation.Type: GrantFiled: August 15, 2008Date of Patent: March 22, 2011Assignee: Honda Motor Co., Ltd.Inventors: Tetsuya Ishiguro, Shusuke Akazaki, Yuji Yamamoto
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Publication number: 20100246086Abstract: A solenoid driving device with excellent electric power efficiency which drives and controls an actuator including a solenoid and an active vibration isolating support device with excellent electric power efficiency which includes the solenoid driving device are disclosed. The solenoid driving device includes a booster circuit 120 which boosts a battery voltage, and driving circuits 121A, 121B which an actuator with the electric power supplied and boosted by the booster circuit 120. ACM_ECU200A including a micro computer 200b calculates the magnitude of the vibration of the engine, an engine vibration cycle and a phase lag to obtain the drive frequency fDV of the actuator in the vibration state estimating unit 234 and the phase detecting unit 235. A booster circuit controlling unit 237 of the micro computer 200b determines the target voltage V based on the drive frequency fDV.Type: ApplicationFiled: March 26, 2010Publication date: September 30, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Tetsuya ISHIGURO, Tatsuhiro YONE
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Patent number: 7717409Abstract: An object of the present invention is to provide an active vibration isolating support apparatus to effectively reduce a transient vibration which occurs at the time of engine starting. In order to achieve the above object, an active vibration isolating support apparatus for suppressing a vibration transmitted to a vehicle body including: active mounts to elastically support a load of an engine in the vehicle body each of which includes an actuator; and a control unit to drive the actuator to extend and contract periodically in response to a waveform of the vibration of the engine; in which the control unit supplies a predetermined current to the actuator based on a starting control condition, and starts a control of the actuator based on a control instruction value of a current in response to the vibration of the engine is provided.Type: GrantFiled: March 5, 2009Date of Patent: May 18, 2010Assignee: Honda Motor Co., Ltd.Inventors: Tetsuya Ishiguro, Hiroaki Ue, Hirotomi Nemoto, Toshiyuki Ogino
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Publication number: 20090224446Abstract: An object of the present invention is to provide an active vibration isolating support apparatus to effectively reduce a transient vibration which occurs at the time of engine starting. In order to achieve the above object, an active vibration isolating support apparatus for suppressing a vibration transmitted to a vehicle body including: active mounts to elastically support a load of an engine in the vehicle body each of which includes an actuator; and a control unit to drive the actuator to extend and contract periodically in response to a waveform of the vibration of the engine; in which the control unit supplies a predetermined current to the actuator based on a starting control condition, and starts a control of the actuator based on a control instruction value of a current in response to the vibration of the engine is provided.Type: ApplicationFiled: March 5, 2009Publication date: September 10, 2009Applicant: Honda Motor Co., Ltd.Inventors: Tetsuya Ishiguro, Hiroaki Ue, Hirotomi Nemoto, Toshiyuki Ogino
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Patent number: 7581720Abstract: When switching between L3 cylinder cut-off running in which a bank on one side of a V6 engine is cut off and V4 cylinder cut-off running in which one cylinder in each of the two banks is cut off, V6 all-cylinder running to operate all the cylinders is interposed therebetween. Therefore, a transitional period is provided between L3 cylinder cut-off running and V6 all-cylinder running and between V6 all-cylinder running and V4 cylinder cut-off running, and no transitional period is present between L3 cylinder cut-off running and V4 cylinder cut-off running. Thus, it is possible to simplify control of an active vibration isolation support system during the transitional period and to avoid deterioration of a vibrational state during the transitional period.Type: GrantFiled: July 10, 2006Date of Patent: September 1, 2009Assignee: Honda Motor Co., Ltd.Inventors: Hirotomi Nemoto, Tetsuya Ishiguro