Patents by Inventor Kazunori Yamanaka

Kazunori Yamanaka 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: 9422826
    Abstract: A start control unit for a steam turbine plant, wherein inputting a measured value of a steam temperature fed to a steam turbine, a measured value or an estimated value of a rotor temperature of the steam turbine, and a measured value of a casing temperature of the steam turbine, and controlling a steam flow rate so as to increase the steam flow rate fed to the steam turbine when a difference between the steam temperature and the rotor temperature is smaller than a first regulated value and a difference between the rotor temperature and the casing temperature is a second regulated value or larger.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: August 23, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Eunkyeong Kim, Yasuhiro Yoshida, Takuya Yoshida, Tatsuro Yashiki, Nobuyuki Hokari, Kenichiro Nomura, Kazunori Yamanaka, Fumiyuki Suzuki, Masaaki Tomizawa, Yuichi Takahashi
  • Patent number: 9341587
    Abstract: An electric potential measuring apparatus includes a detecting unit, a generating unit, and a measuring unit. The detecting unit is provided on a surface of a measurement subject and detects a second signal including a first signal within a first frequency range from the measurement subject. The generating unit generates a fourth signal by averaging a third signal within a second frequency range outside the first frequency range. The measuring unit measures electric potential of the first signal included in the second signal detected by the detecting unit with reference to electric potential of the fourth signal generated by the generating unit.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: May 17, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 9269883
    Abstract: A thermoelectric conversion device includes a stack in which a first perovskite dielectric film, which includes Sr and Ti and has a first bandgap, and a second perovskite dielectric film, which includes Sr and Ti and has a second bandgap smaller than the first bandgap, are stacked alternately, each of the first and second perovskite dielectric films being doped to have an electric conductivity, the first and the second perovskite dielectric films having respective compositions such that there appears a bandoffset of 0.54 eV in maximum between a conduction band of the first perovskite dielectric film and a conduction band of the second perovskite dielectric film.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: February 23, 2016
    Assignee: FUJITSU LIMITED
    Inventors: John David Baniecki, Masatoshi Ishii, Kazuaki Kurihara, Kazunori Yamanaka
  • Patent number: 9255494
    Abstract: Disclosed is a steam turbine power plant adapted to start operating safely even if prediction accuracy of its startup constraints cannot be obtained. The system calculates predictive values and current values of startup constraints of a steam turbine from process variables of plant physical quantities, next calculates in parallel both a first control input variable for a heat medium flow controller based on predictive values, and a second control input variable for a main steam control valve based on the current values, and while preferentially selecting the first control input variable, if the first control input variable is not calculated, selects the second control input variable instead. After the selection of at least one of the first and second control input variables, the system outputs an appropriate command value to the heat medium flow controller and the main steam control valve according to the kind of selected control input variable.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: February 9, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Tatsuro Yashiki, Yasuhiro Yoshida, Takuya Yoshida, Naohiro Kusumi, Kazunori Yamanaka, Kenichiro Nomura, Masaaki Tomizawa, Fumiyuki Suzuki, Yuichi Takahashi
  • Patent number: 9249682
    Abstract: Disclosed is a steam turbine power plant adapted to start operating very efficiently by highly accurate look-ahead control of a plurality of its startup constraints.
    Type: Grant
    Filed: November 14, 2013
    Date of Patent: February 2, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yasuhiro Yoshida, Takuya Yoshida, Tatsuro Yashiki, Kenichiro Nomura, Kazunori Yamanaka, Masaaki Tomizawa, Yuichi Takahashi, Fumiyuki Suzuki
  • Patent number: 9161881
    Abstract: In the tapping device for producing beautiful skin, a Head contacts with skin. A Tapping mechanism pats the skin facing the Head with a Pad. The Tapping mechanism is equipped with the Pad at one end, and has a Shaft from which the Head projects and rolls back by piston actions. A Biasing member biases the Shaft toward one side of the piston actions. A Wire rod empowers the Shaft towards the direction resisting the biasing power of the Biasing member when tension is provided. An Actuator provides tension intermittently in a Wire rod, the tension of the wire rod and biasing of the bias member providing piston actions.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 20, 2015
    Assignee: YA-MAN LTD.
    Inventors: Iwao Yamazaki, Kazunori Yamanaka
  • Publication number: 20150135712
    Abstract: A steam turbine plant activation control device is provided, which generates an activation schedule that enables a reduction in a time period required for the activation of a steam turbine plant without complex calculation such as prediction and calculation of a temperature and calculation of thermal stress.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 21, 2015
    Inventors: Eunkyeong KIM, Yasuhiro YOSHIDA, Tatsuro YASHIKI, Yukinori KATAGIRI, Takuya YOSHIDA, Kenichiro NOMURA, Kazunori YAMANAKA, Fumiyuki SUZUKI, Norihiro IYANAGA
  • Publication number: 20150121874
    Abstract: Provided is a steam turbine plant activation control device that can flexibly handle an initial state amount of a steam turbine plant and activate a steam turbine at a high speed. The activation control device 21 for the steam turbine plant includes a heat source device 1 configured to heat a low-temperature fluid using a heat source medium and generate a high-temperature fluid, a steam generator 2 for generating steam by thermal exchange with the high-temperature fluid, a steam turbine 3 to be driven by the steam, and adjusters 11, 12, 13, 14, 15 configured to adjust operation amounts of the plant.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventors: Yasuhiro YOSHIDA, Takuya YOSHIDA, Tatsuro YASHIKI, Yukinori KATAGIRI, Eunkyeong KIM, Kenichiro NOMURA, Kazunori YAMANAKA, Fumiyuki SUZUKI, Norihiro IYANAGA
  • Publication number: 20150121872
    Abstract: Providing a steam turbine power plant that can be safely activated at a high speed while maintaining thermal stress at a level equal to or lower than a limit in consideration of operational results of the plant, and a method for activating the steam turbine power plant.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 7, 2015
    Inventors: Tatsuro YASHIKI, Yukinori KATAGIRI, Takuya YOSHIDA, Miyuki KAWATA, Yasuhiro YOSHIDA, Eunkyeong KIM, Kenichiro NOMURA, Kazunori YAMANAKA, Fumiyuki SUZUKI, Norihiro IYANAGA
  • Publication number: 20150053247
    Abstract: A thermoelectric conversion device includes a stack in which a first perovskite dielectric film, which includes Sr and Ti and has a first bandgap, and a second perovskite dielectric film, which includes Sr and Ti and has a second bandgap smaller than the first bandgap, are stacked alternately, each of the first and second perovskite dielectric films being doped to have an electric conductivity, the first and the second perovskite dielectric films having respective compositions such that there appears a bandoffset of 0.54 eV in maximum between a conduction band of the first perovskite dielectric film and a conduction band of the second perovskite dielectric film.
    Type: Application
    Filed: November 12, 2014
    Publication date: February 26, 2015
    Applicant: FUJITSU LIMITED
    Inventors: John David Baniecki, Masatoshi Ishii, Kazuaki Kurihara, Kazunori Yamanaka
  • Patent number: 8940571
    Abstract: P-type semiconductor sheets and n-type semiconductor sheets formed by mixing a powder of semiconductor material, a binder resin, a plasticizer, and a surfactant are prepared. In addition, separator sheets formed by mixing a resin such as PMMA and a plasticizer are prepared. Through holes are formed in each of the separator sheets and then filled with a conductive material. Thereafter, the p-type semiconductor sheet, the separator sheet, the n-type semiconductor sheet and the separator sheet are stacked. The resultant laminated body is cut into a predetermined size and then subjected to a baking process.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 27, 2015
    Assignee: Fujitsu Limited
    Inventors: Kazuaki Kurihara, Masaharu Hida, Kazunori Yamanaka
  • Publication number: 20140373540
    Abstract: A start control unit for a steam turbine plant, wherein inputting a measured value of a steam temperature fed to a steam turbine, a measured value or an estimated value of a rotor temperature of the steam turbine, and a measured value of a casing temperature of the steam turbine, and controlling a steam flow rate so as to increase the steam flow rate fed to the steam turbine when a difference between the steam temperature and the rotor temperature is smaller than a first regulated value and a difference between the rotor temperature and the casing temperature is a second regulated value or larger.
    Type: Application
    Filed: June 25, 2014
    Publication date: December 25, 2014
    Inventors: Eunkyeong KIM, Yasuhiro YOSHIDA, Takuya YOSHIDA, Tatsuro YASHIKI, Nobuyuki HOKARI, Kenichiro NOMURA, Kazunori YAMANAKA, Fumiyuki SUZUKI, Masaaki TOMIZAWA, Yuichi TAKAHASHI
  • Publication number: 20140338717
    Abstract: A thermoelectric conversion device includes a perovskite film over a substrate and formed with first and second electrodes on the perovskite film, wherein the perovskite film includes a domain having a crystal orientation different from a crystal orientation of a crystal that constitutes the perovskite film.
    Type: Application
    Filed: August 1, 2014
    Publication date: November 20, 2014
    Inventors: John David Baniecki, Yasutoshi Kotaka, Masatoshi Ishii, Kazuaki Kurihara, Kazunori Yamanaka
  • Publication number: 20140290250
    Abstract: Disclosed is a steam turbine power plant adapted to start operating very efficiently by highly accurate look-ahead control of a plurality of its startup constraints.
    Type: Application
    Filed: November 14, 2013
    Publication date: October 2, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yasuhiro YOSHIDA, Takuya YOSHIDA, Tatsuro YASHIKI, Kenichiro NOMURA, Kazunori YAMANAKA, Masaaki TOMIZAWA, Yuichi TAKAHASHI, Fumiyuki SUZUKI
  • Publication number: 20140290249
    Abstract: Disclosed is a steam turbine power plant adapted to start operating safely even if prediction accuracy of its startup constraints cannot be obtained. The system calculates predictive values and current values of startup constraints of a steam turbine from process variables of plant physical quantities, next calculates in parallel both a first control input variable for a heat medium flow controller based on predictive values, and a second control input variable for a main steam control valve based on the current values, and while preferentially selecting the first control input variable, if the first control input variable is not calculated, selects the second control input variable instead. After the selection of at least one of the first and second control input variables, the system outputs an appropriate command value to the heat medium flow controller and the main steam control valve according to the kind of selected control input variable.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 2, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Tatsuro YASHIKI, Yasuhiro YOSHIDA, Takuya YOSHIDA, Naohiro KUSUMI, Kazunori YAMANAKA, Kenichiro NOMURA, Masaaki TOMIZAWA, Fumiyuki SUZUKI, Yuichi TAKAHASHI
  • Publication number: 20140260254
    Abstract: A steam turbine power plant includes heat-source equipment that heats a low-temperature flow by applying a heat medium and thus generates a high-temperature flow, a steam generator using the high-temperature flow generated by the heat-source equipment, a steam turbine driven by the steam generated by the steam generator, an electric generator that converts rotational motive power of the steam turbine into electric power, a heat-medium controller that controls a supply rate of the heat medium supplied to the heat source equipment, a low-temperature flow controller that controls a supply rate of the low-temperature flow supplied to the heat-source equipment, a prediction device that predicts startup constraints of the steam turbine from control input variables of the controllers when the steam turbine is started, and a control input variables setter so as to prevent data predictions by the prediction device from exceeding limit values of startup constraints.
    Type: Application
    Filed: November 12, 2013
    Publication date: September 18, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yasuhiro YOSHIDA, Takuya YOSHIDA, Tatsuro YASHIKI, Naohiro KUSUMI, Kenichiro NOMURA, Kazunori YAMANAKA, Masaaki TOMIZAWA, Yuichi TAKAHASHI, Fumiyuki SUZUKI
  • Patent number: 8761849
    Abstract: A superconductive filter includes a superconductive filter substrate having a dielectric substrate and a plurality of resonator patterns formed on a surface of the dielectric substrate, the plurality of resonator patterns including a superconductive material; a package accommodating the superconductive filter substrate; and an intermediate substrate disposed between an inner surface of the package and the superconductive filter substrate, and thermally coupling the package and the superconductive filter substrate wherein a difference between a degree of contraction of the intermediate substrate and the degree of contraction of the dielectric substrate is smaller than a difference between the degree of contraction of the dielectric substrate and the degree of contraction of the package, when the package, the intermediate substrate, and the dielectric substrate are cooled from room temperature to a critical temperature of the resonator patterns.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: June 24, 2014
    Assignee: Fujitsu Limited
    Inventors: Teru Nakanishi, Akihiko Akasegawa, Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8725224
    Abstract: A filter includes a dielectric substrate; an electrode layer continuously formed covering a first side of the dielectric substrate; a disk-shaped electrode pattern provided on a second side of the dielectric substrate, the disk-shaped electrode pattern and the electrode layer holding the dielectric substrate therebetween; a ground slot having an opening that is formed asymmetrically with respect to the center of a circular area included in the electrode layer and exposes the dielectric substrate, the circular area and the disk-shaped electrode pattern holding the dielectric substrate therebetween.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: May 13, 2014
    Assignee: Fujitsu Limited
    Inventors: Keisuke Sato, Teru Nakanishi, Akihiko Akasegawa, Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8675337
    Abstract: A variable capacitor includes a metal oxide film having a perovskite structure, first and second electrode films having the metal oxide film placed therebetween and to be coupled to an external voltage source, and a bias voltage source configured to provide a bias voltage that is applied in series or parallel to a capacitance of a capacitor including the metal oxide film and the first and second electrode films, wherein the bias voltage applied by the bias voltage source to the capacitance is adapted to maximize a voltage dependency of a relative permittivity of the metal oxide film.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: March 18, 2014
    Assignee: Fujitsu Limited
    Inventors: John D. Baniecki, Masatoshi Ishii, Kazuaki Kurihara, Kazunori Yamanaka
  • Patent number: 8674588
    Abstract: An electric power generation device equipped with an apparatus which vibrates and generates heat includes a thermoelectric power generation module and a piezoelectric power generation module which are formed integrally. The thermoelectric power generation module has a first surface combining thermally and mechanically with the apparatus's outer surface and a second surface opposite to the first surface, and generates electric power from temperature differences between the first surface and the second surface caused by the apparatus's generating heat. The piezoelectric power generation module has a fixed end combining mechanically with the apparatus's outer surface and a movable end opposite to the fixed end, and generates electric power from displacement of the movable end to the fixed end caused by the apparatus's vibrating.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: March 18, 2014
    Assignee: Fujitsu Limited
    Inventors: Kazuaki Kurihara, Masaharu Hida, Kazunori Yamanaka