Patents by Inventor Hidehiko NAKAGAWA
Hidehiko NAKAGAWA 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: 11959424Abstract: An output corrector is provided with an adjustment coefficient creating unit which creates an adjustment coefficient, an output adjusting unit which adjusts a control output using the adjustment coefficient, and an output accepting unit which accepts an output from an output meter for detecting the output of a gas turbine. The adjustment coefficient creating unit includes a first coefficient element calculating unit which calculates a first coefficient element, a second coefficient element calculating unit which calculates a second coefficient element, and an adjustment coefficient calculating unit which calculates the adjustment coefficient using the first and second coefficient elements. The first coefficient element is the ratio of an immediately preceding output in an immediately preceding time period, to a reference output at a reference time point in the past. The second coefficient element is the ratio of the current output in the current time period, to the immediately preceding output.Type: GrantFiled: July 26, 2021Date of Patent: April 16, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoki Nakata, Hidehiko Nishimura, Jotaro Nakagawa
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DATA STORAGE DEVICE WITH NOTCH FILTER CALIBRATION BASED ON MULTI-RATE EXCITATION AND ERROR REJECTION
Publication number: 20240071415Abstract: Various illustrative aspects are directed to a data storage device, comprising one or more disks; an actuator mechanism configured to position one or more heads proximate to one or more disk surfaces of the one or more disks; and one or more processing devices, comprising an actuator mechanism control system configured for controlling the actuator mechanism. The one or more processing devices are configured to: output a multi-rate excitation to at least one multi-rate notch filter of the actuator mechanism control system; detect a frequency response of the actuator mechanism in response to the multi-rate excitation; and calibrate the at least one multi-rate notch filter of the actuator mechanism control system, based at least in part on the detected frequency response of the actuator mechanism.Type: ApplicationFiled: August 25, 2022Publication date: February 29, 2024Inventors: Shinsuke Nakagawa, Zaifeng Chen, Hidehiko Numasato -
Data storage device with notch filter calibration based on multi-rate excitation and error rejection
Patent number: 11915731Abstract: Various illustrative aspects are directed to a data storage device, comprising one or more disks; an actuator mechanism configured to position one or more heads proximate to one or more disk surfaces of the one or more disks; and one or more processing devices, comprising an actuator mechanism control system configured for controlling the actuator mechanism. The one or more processing devices are configured to: output a multi-rate excitation to at least one multi-rate notch filter of the actuator mechanism control system; detect a frequency response of the actuator mechanism in response to the multi-rate excitation; and calibrate the at least one multi-rate notch filter of the actuator mechanism control system, based at least in part on the detected frequency response of the actuator mechanism.Type: GrantFiled: August 25, 2022Date of Patent: February 27, 2024Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.Inventors: Shinsuke Nakagawa, Zaifeng Chen, Hidehiko Numasato -
Publication number: 20230052551Abstract: Provided is a novel fluorescent probe. A compound of the following general formula (I) or a salt thereof.Type: ApplicationFiled: June 8, 2020Publication date: February 16, 2023Applicants: THE UNIVERSITY OF TOKYO, PUBLIC UNIVERSITY CORPORATION NAGOYA CITY UNIVERSITY, RIKENInventors: Yasuteru URANO, Toru KOMATSU, Shingo SAKAMOTO, Hiroyuki NOJI, Hidehiko NAKAGAWA, Mitsuyasu KAWAGUCHI, Rikiya WATANABE
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Patent number: 11408471Abstract: A wear debris collection device includes a rotation body that is connected to a rotation shaft and performs rotating movement in accordance with rotation of the rotation shaft, a braking member that brakes the rotating movement of the rotation body, a hood covering the rotation body and the braking member and to prevent dust from entering from outside, a blower that blows air into the hood, a collection apparatus that suctions air in the hood and collects wear debris of the braking member contained in the air, and an air pressure adjuster that measures air pressure in the hood and external air pressure and adjusts an air quantity of at least one of the blower and the collection apparatus so that the air pressure in the hood equals the external air pressure.Type: GrantFiled: April 17, 2019Date of Patent: August 9, 2022Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.Inventors: Shigetomo Suzuki, Taro Matsuda, Hidehiko Nakagawa, Yasuko Yamazaki, Atsushi Ueno, Ayumu Okunari
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Publication number: 20210148422Abstract: A wear debris collection device includes a rotation body that is connected to a rotation shaft and performs rotating movement in accordance with rotation of the rotation shaft, a braking member that brakes the rotating movement of the rotation body, a hood covering the rotation body and the braking member and to prevent dust from entering from outside, a blower that blows air into the hood, a collection apparatus that suctions air in the hood and collects wear debris of the braking member contained in the air, and an air pressure adjuster that measures air pressure in the hood and external air pressure and adjusts an air quantity of at least one of the blower and the collection apparatus so that the air pressure in the hood equals the external air pressure.Type: ApplicationFiled: April 17, 2019Publication date: May 20, 2021Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.Inventors: Shigetomo SUZUKI, Taro MATSUDA, Hidehiko NAKAGAWA, Yasuko YAMAZAKI, Atsushi UENO, Ayumu OKUNARI
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Patent number: 10689394Abstract: A compound represented by the following formula (1) is provided: wherein X represents a sulfur atom or —CH?CH—; A1 to A4 each independently represent a carbon atom or a nitrogen atom, and at least one of A1 to A4 is a nitrogen atom; R1 represents any one of a 1,2,3,4-tetrahydroquinolyl group (or a 3,4-dihydro-1(2H)-quinolyl group), a 3,4-dihydro-4,4-dimethyl-1(2H)-quinolyl group, a 2,3,4,5-tetrahydro-1H-1-benzazepinyl group, or a substituent represented by the following formula (2): wherein R4 represents a 2,3,4-trifluorophenyl group, a 4-iodophenyl group, a 2,3-difluorophenyl group, a 3,5-difluorophenyl group, a 5-fluoro-2-methylphenyl group, a 3-pentafluorosulfanylphenyl group, a 2,6-dimethylphenyl group, a 4-benzyloxyphenyl group, a 3,5-bis(trifluoromethyl)biphenyl group, a 4-tert-butylphenyl group, a 3-methoxyphenyl group, an unsubstituted or substituted pyridyl group, or an unsubstituted or substituted naphthyl group; R5 represents a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lType: GrantFiled: June 14, 2017Date of Patent: June 23, 2020Assignee: THE UNIVERSITY OF TOKYOInventors: Hidenori Ichijo, Kengo Homma, Naomi Tsuburaya, Tetsuo Nagano, Takayoshi Okabe, Hirotatsu Kojima, Manabu Shimonishi, Takao Fujisawa, Norio Shiibata, Tsunehiko Higuchi, Seiichi Nakamura, Hidehiko Nakagawa, Shin-Ichi Ikeda
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Publication number: 20190177336Abstract: It is an object of the present invention to provide a compound inhibiting the binding between ALS-related mutant SOD1 and Derlin-1, a medicament comprising the compound, and a method for treating ALS by administering the medicament to a patient.Type: ApplicationFiled: June 14, 2017Publication date: June 13, 2019Applicant: The University of TokyoInventors: Hidenori Ichijo, Kengo Homma, Naomi Tsuburaya, Tetsuo Nagano, Takayoshi Okabe, Hirotatsu Kojima, Manabu Shimonishi, Takao Fujisawa, Norio Shiibata, Tsunehiko Higuchi, Seiichi Nakamura, Hidehiko Nakagawa, Shin-Ichi Ikeda
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Patent number: 9768712Abstract: A power conversion device includes: a power converter to perform output to an output line connected to a single-phase power system; and a control device to control the power converter so it operates as a virtual synchronous generator. The control device includes: a voltage and current measurer to obtain, from a single-phase system voltage, an angular velocity and a phase of the system voltage by an estimation operation that uses the phase of the system voltage as a parameter; a power obtainer to obtain active power and reactive power; a governor model to calculate a phase difference; an AVR model to calculate an absolute value of an induced voltage of a virtual synchronous generator; a generator model to calculate current command values corresponding to an armature current of the virtual synchronous generator; and a current controller to generate and output a PWM signal to the power converter.Type: GrantFiled: February 16, 2015Date of Patent: September 19, 2017Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kenichi Sakimoto, Yuko Hirase, Eiji Yoshimura, Shogo Katsura, Hidehiko Nakagawa, Osamu Noro, Yuji Shindo
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Publication number: 20170047861Abstract: A power conversion device includes: a power converter to perform output to an output line connected to a single-phase power system; and a control device to control the power converter so it operates as a virtual synchronous generator. The control device includes: a voltage and current measurer to obtain, from a single-phase system voltage, an angular velocity and a phase of the system voltage by an estimation operation that uses the phase of the system voltage as a parameter; a power obtainer to obtain active power and reactive power; a governor model to calculate a phase difference; an AVR model to calculate an absolute value of an induced voltage of a virtual synchronous generator; a generator model to calculate current command values corresponding to an armature current of the virtual synchronous generator; and a current controller to generate and output a PWM signal to the power converter.Type: ApplicationFiled: February 16, 2015Publication date: February 16, 2017Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kenichi SAKIMOTO, Yuko HIRASE, Eiji YOSHIMURA, Shogo KATSURA, Hidehiko NAKAGAWA, Osamu NORO, Yuji SHINDO