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).

  • Patent number: 11959424
    Abstract: 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: Grant
    Filed: July 26, 2021
    Date of Patent: April 16, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Naoki Nakata, Hidehiko Nishimura, Jotaro Nakagawa
  • Publication number: 20240071415
    Abstract: 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: Application
    Filed: August 25, 2022
    Publication date: February 29, 2024
    Inventors: Shinsuke Nakagawa, Zaifeng Chen, Hidehiko Numasato
  • Patent number: 11915731
    Abstract: 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: Grant
    Filed: August 25, 2022
    Date of Patent: February 27, 2024
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Shinsuke Nakagawa, Zaifeng Chen, Hidehiko Numasato
  • Publication number: 20230052551
    Abstract: Provided is a novel fluorescent probe. A compound of the following general formula (I) or a salt thereof.
    Type: Application
    Filed: June 8, 2020
    Publication date: February 16, 2023
    Applicants: THE UNIVERSITY OF TOKYO, PUBLIC UNIVERSITY CORPORATION NAGOYA CITY UNIVERSITY, RIKEN
    Inventors: Yasuteru URANO, Toru KOMATSU, Shingo SAKAMOTO, Hiroyuki NOJI, Hidehiko NAKAGAWA, Mitsuyasu KAWAGUCHI, Rikiya WATANABE
  • Patent number: 11408471
    Abstract: 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: Grant
    Filed: April 17, 2019
    Date of Patent: August 9, 2022
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Shigetomo Suzuki, Taro Matsuda, Hidehiko Nakagawa, Yasuko Yamazaki, Atsushi Ueno, Ayumu Okunari
  • Publication number: 20210148422
    Abstract: 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: Application
    Filed: April 17, 2019
    Publication date: May 20, 2021
    Applicant: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Shigetomo SUZUKI, Taro MATSUDA, Hidehiko NAKAGAWA, Yasuko YAMAZAKI, Atsushi UENO, Ayumu OKUNARI
  • Patent number: 10689394
    Abstract: 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 l
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: June 23, 2020
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: 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
  • Publication number: 20190177336
    Abstract: 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: Application
    Filed: June 14, 2017
    Publication date: June 13, 2019
    Applicant: The University of Tokyo
    Inventors: 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
  • Patent number: 9768712
    Abstract: 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: Grant
    Filed: February 16, 2015
    Date of Patent: September 19, 2017
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenichi Sakimoto, Yuko Hirase, Eiji Yoshimura, Shogo Katsura, Hidehiko Nakagawa, Osamu Noro, Yuji Shindo
  • Publication number: 20170047861
    Abstract: 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: Application
    Filed: February 16, 2015
    Publication date: February 16, 2017
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenichi SAKIMOTO, Yuko HIRASE, Eiji YOSHIMURA, Shogo KATSURA, Hidehiko NAKAGAWA, Osamu NORO, Yuji SHINDO