Patents by Inventor Atsuo NAKATANI

Atsuo NAKATANI 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: 10683867
    Abstract: A vacuum valve connected to a vacuum pump, comprises: a valve plate to be openably/closably driven; a drive section configured to openably/closably drive the valve plate; a signal input section to which a pump information signal indicating an operation state of the vacuum pump is input; and a valve control section configured to control operation of the valve plate based on the input pump information signal.
    Type: Grant
    Filed: January 6, 2018
    Date of Patent: June 16, 2020
    Assignee: Shimadzu Corporation
    Inventors: Masaya Nakamura, Junichiro Kozaki, Atsuo Nakatani, Nobuyuki Hirata
  • Patent number: 10599166
    Abstract: A valve control device configured such that a pressure measurement value of a chamber, a target pressure value of the chamber, and an opening degree measurement value of the vacuum valve are input to the valve control device and configured to control an opening degree of the vacuum valve based on a deviation between the pressure measurement value and the target pressure value, comprises: a storage storing a correlation between the opening degree of the vacuum valve and a conductance of a system including the vacuum valve; and a correction gain setting section obtaining, based on the correlation, a change rate of the conductance in association with an opening degree change at the input opening degree measurement value, thereby setting an inverse of the change rate as a correction gain. The opening degree of the vacuum valve is controlled based on the deviation and the correction gain.
    Type: Grant
    Filed: January 6, 2018
    Date of Patent: March 24, 2020
    Assignee: Shimadzu Corporation
    Inventors: Nobuyuki Hirata, Junichiro Kozaki, Atsuo Nakatani, Masaya Nakamura
  • Publication number: 20200033283
    Abstract: A gas sensor includes: a substrate; a first conductor and a second conductor that are disposed on the substrate; an insulating layer; and an adsorbent layer. The insulating layer covers the first conductor and the second conductor, and has a first opening that allows a part of a surface of the first conductor to be exposed therethrough and a second opening that allows a part of a surface of the second conductor to be exposed therethrough. The adsorbent layer contains a conductive material and an organic adsorbent that can adsorb a gas. The adsorbent layer is in contact with the first conductor and the second conductor respectively through the first opening and the second opening.
    Type: Application
    Filed: March 28, 2018
    Publication date: January 30, 2020
    Inventors: Atsuo NAKAO, Masaya NAKATANI, Kiyoshi TOKO, Rui YATABE, Bartosz WYSZYNSKI
  • Patent number: 10408715
    Abstract: An adsorption pump includes a housing, a movable part, and an adsorption part. The housing has inlet and outlet ports for a sample. The movable part is at least partly located inside the housing. The adsorption part is located inside the housing.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: September 10, 2019
    Assignee: PANASONIC CORPORATION
    Inventors: Yuji Murashima, Masaya Nakatani, Atsuo Nakao
  • Patent number: 10400775
    Abstract: A vacuum valve attached to a vacuum pump configured to generate regenerative power to perform a stop operation upon blackout, comprises: a first power input section to which power is input from a commercial power source; a second power input section to which the regenerative power generated at the vacuum pump is input; and a valve source circuit to which the power input to each of the first and second power input sections is supplied. When the power from the commercial power source is supplied to the first power input section, the vacuum valve is operated by the supplied power, and when the power from the commercial power source is stopped, the vacuum valve is operated by the regenerative power.
    Type: Grant
    Filed: January 6, 2018
    Date of Patent: September 3, 2019
    Assignee: Shimadzu Corporation
    Inventors: Masaya Nakamura, Junichiro Kozaki, Atsuo Nakatani, Nobuyuki Hirata
  • Publication number: 20180195519
    Abstract: A vacuum valve attached to a vacuum pump configured to generate regenerative power to perform a stop operation upon blackout, comprises: a first power input section to which power is input from a commercial power source; a second power input section to which the regenerative power generated at the vacuum pump is input; and a valve source circuit to which the power input to each of the first and second power input sections is supplied. When the power from the commercial power source is supplied to the first power input section, the vacuum valve is operated by the supplied power, and when the power from the commercial power source is stopped, the vacuum valve is operated by the regenerative power.
    Type: Application
    Filed: January 6, 2018
    Publication date: July 12, 2018
    Inventors: Masaya NAKAMURA, Junichiro KOZAKI, Atsuo NAKATANI, Nobuyuki HIRATA
  • Publication number: 20180196449
    Abstract: A valve control device configured such that a pressure measurement value of a chamber, a target pressure value of the chamber, and an opening degree measurement value of the vacuum valve are input to the valve control device and configured to control an opening degree of the vacuum valve based on a deviation between the pressure measurement value and the target pressure value, comprises: a storage storing a correlation between the opening degree of the vacuum valve and a conductance of a system including the vacuum valve; and a correction gain setting section obtaining, based on the correlation, a change rate of the conductance in association with an opening degree change at the input opening degree measurement value, thereby setting an inverse of the change rate as a correction gain. The opening degree of the vacuum valve is controlled based on the deviation and the correction gain.
    Type: Application
    Filed: January 6, 2018
    Publication date: July 12, 2018
    Inventors: Nobuyuki HIRATA, Junichiro KOZAKI, Atsuo NAKATANI, Masaya NAKAMURA
  • Publication number: 20180195518
    Abstract: A vacuum valve connected to a vacuum pump, comprises: a valve plate to be openably/closably driven; a drive section configured to openably/closably drive the valve plate; a signal input section to which a pump information signal indicating an operation state of the vacuum pump is input; and a valve control section configured to control operation of the valve plate based on the input pump information signal.
    Type: Application
    Filed: January 6, 2018
    Publication date: July 12, 2018
    Inventors: Masaya NAKAMURA, Junichiro KOZAKI, Atsuo NAKATANI, Nobuyuki HIRATA
  • Publication number: 20180023719
    Abstract: A control device configured to control each of a vacuum pump and a vacuum valve provided on a side of a suction port of the vacuum pump, the control device comprises: a motor driver configured to drive a rotor driving motor of the vacuum pump; a valve plate driver configured to drive a valve plate driving motor of the vacuum valve; and a controller configured to control the motor driver and the valve plate driver.
    Type: Application
    Filed: June 12, 2017
    Publication date: January 25, 2018
    Inventors: Masaya NAKAMURA, Kiyonori HIROTA, Junichiro KOZAKI, Nobuyuki HIRATA, Atsuo NAKATANI