Patents by Inventor Kazuaki Kurihara

Kazuaki Kurihara 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: 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
  • Publication number: 20130284229
    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: Application
    Filed: July 2, 2013
    Publication date: October 31, 2013
    Inventors: Kazuaki Kurihara, Masaharu Hida, Kazunori Yamanaka
  • Publication number: 20130271110
    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: Application
    Filed: June 10, 2013
    Publication date: October 17, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8549730
    Abstract: The coaxial connector 10 to be connected with a coaxial cable has a surface covering layer 20 formed of a metal material which causes an eutectic reaction with In on the surface of a terminal 12 which is a core conductor. Because of the surface covering layer 20 of a metal material which causes the eutectic reaction with In formed on the surface of the terminal of the coaxial connector, the terminal of the coaxial connector and the electrode of a superconductor device can be jointed to each other by the solder layer of In-based solder at a relatively low temperature. Thus, the discharge of oxygen from the inside of the superconductor film of a superconductor filter can be suppressed, and the decrease of the critical temperature TC can be suppressed.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: October 8, 2013
    Assignee: Fujitsu Limited
    Inventors: Teru Nakanishi, Akihiko Akasegawa, Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8524383
    Abstract: A power generating system includes: a plurality of cells forming a fuel cell battery for generating power; a cell temperature measuring unit provided for each cell; a thermoelectric converter provided for each cell; a heating unit which heats the plurality of cells; a first control unit which controls the heating unit; and a second control unit, provided for each thermoelectric converter, for controlling the thermoelectric converter, wherein the first control unit controls the heating unit so as to bring the temperature of the heating unit to within a predetermined control temperature range, and the second control unit performs control so that if the temperature of the cell lies outside a predetermined operating temperature range, the thermoelectric converter is switched to the thermal transfer mode and is controlled so as to bring the temperature of the cell to within the predetermined operating temperature range, and if the temperature of the cell lies within the predetermined operating temperature range, t
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: September 3, 2013
    Assignee: Fujitsu Limited
    Inventors: Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8501518
    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: June 1, 2011
    Date of Patent: August 6, 2013
    Assignee: Fujitsu Limited
    Inventors: Kazuaki Kurihara, Masaharu Hida, Kazunori Yamanaka
  • Patent number: 8479386
    Abstract: A method for manufacturing an interposer including forming a capacitor over a semiconductor substrate; forming a first resin layer with a first partial electrode buried in over the semiconductor substrate and the capacitor; cutting an upper part of the first partial electrode and the first resin layer with a cutting tool; forming a second resin layer with a second partial electrode buried in over a glass substrate with a through-electrode buried in; cutting an upper part of the second partial electrode and the second resin layer with the cutting tool; making thermal processing with the first resin layer and the second resin layer adhered to each other while connecting the first partial electrode and the second partial electrode to each other; removing the semiconductor substrate; forming a third resin layer over the glass substrate, covering the capacitor; and burying a third partial electrode in the third resin layer.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: July 9, 2013
    Assignee: Fujitsu Limited
    Inventors: Takeshi Shioga, Kazuaki Kurihara, Kanae Nakagawa, Taiji Sakai, Masataka Mizukoshi
  • Patent number: 8474126
    Abstract: A manufacturing method of a semiconductor device include forming a capacitor by forming an oxide film on a surface of a valve metal based on anodic oxidization and by forming a conductive part made of a conductive material on the oxide film; adhering the capacitor on a semiconductor element mounted on a supporting substrate; and coupling the capacitor to the supporting substrate via an outside connection terminal.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: July 2, 2013
    Assignee: Fujitsu Limited
    Inventors: Takeshi Shioga, Kazuaki Kurihara
  • Patent number: 8426073
    Abstract: A fuel cell system includes a fuel cell configured to generate electric power with a fuel gas and an oxygen gas fed to the fuel cell and to discharge exhaust gas including CO2 as a result of generating the electric power; a CO extraction part configured to reduce the CO2 in the exhaust gas fed to the CO extraction part to CO, the CO extraction part including a processing container fed with the exhaust gas and a CO2 adsorbing member provided in the processing container and formed of an oxide having an oxygen deficiency; and a CO recycling part configured to feed the extracted CO to the fuel cell as part of the fuel gas.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: April 23, 2013
    Assignee: Fujitsu Limited
    Inventors: Kazuaki Kurihara, John David Baniecki, Masatoshi Ishii
  • Patent number: 8421312
    Abstract: An acceleration sensor includes a piezoelectric layer formed on a substrate, and sensing electrodes formed in the piezoelectric layer. In the acceleration sensor, the piezoelectric layer interposing between the sensing electrodes is polarized in a film thickness direction of the piezoelectric layer.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: April 16, 2013
    Assignee: Fujitsu Limited
    Inventors: Tsuyoshi Aoki, Kazuaki Kurihara, Shigeyoshi Umemiya
  • Publication number: 20130039746
    Abstract: Provided is a turbocompressor (4) having a drive part (12) generating rotational power, an impeller (22a) to which the rotational power of the drive part (12) is transmitted to rotate, a plurality of gears (31, 32) transmitting the rotational power of the drive part (12) to the impeller (22a), and a drive part casing (13) in which the drive part (12) is installed. This turbocompressor (4) includes an impeller casing (22e) installed around the impeller (22a), and a gear casing (33) configured to be formed independently of the impeller casing (22e) and the drive part casing (13), to couple the impeller casing (22e) and the drive part casing (13), and to form an accommodation space (33a) in which the plurality of gears (31, 32) are accommodated. With this configuration, in manufacturing the turbocompressor, a working process can be simplified and working labor and cost can be reduced.
    Type: Application
    Filed: February 17, 2011
    Publication date: February 14, 2013
    Inventor: Kazuaki Kurihara
  • Patent number: 8344386
    Abstract: The present invention provides a novel capacitor element, laminated thin-film device, and circuit wherein the capacitance dependency on voltage can be appropriately adjusted, and a technology for manufacturing such a capacitor element and laminated thin-film device. In the capacitor element that comprises a pair of electrode layers and a dielectric layer disposed between the electrode layers, a well region where an ion is implanted is disposed in the dielectric layer, and the C-V curve between the electrode layers is shifted or shifted and expanded in at least one direction of the plus direction and minus direction with respect to the voltage axis.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: January 1, 2013
    Assignee: Fujitsu Limited
    Inventors: John David Baniecki, Takeshi Shioga, Kazuaki Kurihara
  • Patent number: 8330480
    Abstract: Recesses are formed on one surface of a substrate. A conductive film covers an inner surface of each of the recesses. This conductive film contacts a bump of a semiconductor device to be inspected and is electrically connected to the bump. It is therefore possible to prevent damages of the bump to be caused by contact of a probe pin.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: December 11, 2012
    Assignee: Fujitsu Limited
    Inventors: Takeshi Shioga, Kazuaki Kurihara
  • Publication number: 20120298165
    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: Application
    Filed: August 9, 2012
    Publication date: November 29, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Kazuaki KURIHARA, Masaharu HIDA, Kazunori YAMANAKA
  • Patent number: 8313726
    Abstract: A gas generator includes a processing vessel defining a processing space and holding a support body therein, an evacuation system evacuating the processing space; a metal oxide film of a perovskite structure containing oxygen defects formed on the support body, a source gas supplying port supplying a source gas containing molecules of a source compound of carbon dioxide or water into the processing space, a gas outlet port for extracting a product gas containing molecules of a product compound in which oxygen atoms are removed from said source compound, and a heating part heating the support body.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: November 20, 2012
    Assignee: Fujitsu Limited
    Inventors: John David Baniecki, Masatoshi Ishii, Kazuaki Kurihara, Kazunori Yamanaka
  • Publication number: 20120227780
    Abstract: A thermoelectric conversion module includes an insulative substrate, a plurality of thermoelectric conversion material films disposed with a gap therebetween on a first surface of the insulative substrate and made of any one of an n-type thermoelectric conversion material and a p-type thermoelectric conversion material, a first electrode and a second electrode, formed away from each other on each of the thermoelectric conversion material films, a first thermal conduction member disposed on a side of the first surface of the insulative substrate and including a protruding portion in contact with the first, electrodes or the insulative substrate between the first electrodes, and a second thermal conduction member disposed on a side of a second surface of the insulative substrate and including a protruding portion in contact with the second surface of the insulative substrate at an area coinciding with the second electrodes.
    Type: Application
    Filed: May 22, 2012
    Publication date: September 13, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Kazuaki Kurihara, Masatoshi Ishii, John Baniecki, Kazunori Yamanaka
  • Patent number: 8264063
    Abstract: A capacitive element is characterized by including: a base (12); a lower barrier layer (13) formed on the base (12); capacitors (Q1 and Q2) made by forming a lower electrode (14a), capacitor dielectric layers (15a), and upper electrodes (16a) in this order on the lower barrier layer (13); and an upper barrier layer (20) covering at least the capacitor dielectric layers (15a) and the lower barrier layer (13).
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: September 11, 2012
    Assignee: Fujitsu Limited
    Inventors: Takeshi Shioga, John David Baniecki, Kazuaki Kurihara
  • Publication number: 20120211044
    Abstract: A thermoelectric conversion module includes: a first substrate having water permeability and thermal conductivity; a thermoelectric conversion element provided on the first substrate; a heat insulator having water permeability provided around the thermoelectric conversion element on the first substrate; and a second substrate disposed on the thermoelectric conversion element and the heat insulator and having water permeability and thermal conductivity.
    Type: Application
    Filed: November 30, 2011
    Publication date: August 23, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Kazuaki KURIHARA, Takuya Nishino, Takashi Suzuki
  • Patent number: 8245529
    Abstract: A turbo compressor includes a first impeller and a second impeller, which are spaced apart at a predetermined distance from each other in a direction of an axis and are fixed such that their backs face each other, in a rotation shaft which is rotatably supported around the axis. Two angular contact ball bearings are provided between the first impeller and the second impeller to rotatably support the rotation shaft around the axis. The two angular contact ball bearings are combined such that their fronts face each other. According to this turbo compressor, robustness can be improved against the inclination of the rotation shaft, any damage of the bearings can be prevented, and the lifespan thereof can be extended.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: August 21, 2012
    Assignee: IHI Corporation
    Inventors: Kazuaki Kurihara, Minoru Tsukamoto
  • Patent number: 8207653
    Abstract: A piezoelectric generating apparatus includes a plurality of piezoelectric bodies arranged at intervals via a gap. Each of the plurality of piezoelectric bodies includes a fixed end and a free end. A first surface electrode is formed on one side of each of the plurality of piezoelectric bodies, and a second surface electrode is formed on an opposite side of each of the plurality of piezoelectric bodies. A weight spans the plurality of piezoelectric bodies and attached to the free ends of the plurality of piezoelectric bodies. The plurality of piezoelectric bodies are curved upon application of acceleration to the weight from the outside in a lateral direction.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: June 26, 2012
    Assignee: Fujitsu Limited
    Inventors: Kazuaki Kurihara, Shigeyoshi Umemiya, Tsuyoshi Aoki