Patents by Inventor Hiroshi Fujioka

Hiroshi Fujioka 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: 9539910
    Abstract: An electric power converting apparatus mainly includes a first power supply circuit, a second power supply circuit, a selection circuit, a control circuit, a bi-directional inverter circuit, and a charge/discharge circuit. The control circuit composed of a microcomputer or a microprocessor such as a DSP controls an operation of the electric power converting apparatus. The first power supply circuit or the second power supply circuit supplies a operation voltage for the control circuit. The first power supply circuit generates the operation voltage for the control circuit based on an AC voltage supplied from the electric power supply system. The second power supply circuit generates the operation voltage for the control circuit based on a DC voltage supplied from a DC power supply in an electric vehicle EV.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: January 10, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akinobu Sugiyama, Hiroshi Fujioka, Takanori Matsunaga, Kohei Mori, Toshihide Satake
  • Publication number: 20160225913
    Abstract: Transistors using nitride semiconductor layers as channels were experimentally manufactured. The nitride semiconductor layers were all formed through a sputtering method. A deposition temperature was set at less than 600° C., and a polycrystalline or amorphous InxGayAlzN layer was obtained. When composition expressed with a general expression InxGayAlzN (where x+y+z=1.0) falls within a range of 0.3?x?1.0 and 0?z<0.4, a transistor 1a exhibiting an ON/OFF ratio of 102 or higher can be obtained. That is, even a polycrystalline or amorphous film exhibits electric characteristics equal to those of a single crystal. Therefore, it is possible to provide a semiconductor device in which constraints to manufacturing conditions are drastically eliminated, and which includes an InGaAlN-based nitride semiconductor layer which is inexpensive and has excellent electric characteristics as a channel.
    Type: Application
    Filed: August 28, 2014
    Publication date: August 4, 2016
    Applicant: Japan Science and Technology Agency
    Inventors: Hiroshi FUJIOKA, Atsushi KOBAYASHI
  • Patent number: 9333873
    Abstract: In an electric motor vehicle management system according to the present invention, a portable terminal that is owned by a user and is located in an electric motor vehicle transmits vehicle condition information of the electric motor vehicle including position information of the portable terminal that has been detected by a position detector of the portable terminal to a vehicle condition receiver of an energy management system (EMS) installed in a customer. A battery charging-and-discharging plan creating unit of the EMS creates a charging and discharging plan for a battery through the use of the vehicle condition information of the electric motor vehicle. A charging and discharging device performs at least one of charging and discharging of the battery of the electric motor vehicle in accordance with the battery charging-and-discharging plan for the battery.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: May 10, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kohei Mori, Hiroshi Fujioka, Akinobu Sugiyama, Takanori Matsunaga
  • Publication number: 20160001671
    Abstract: In an electric motor vehicle management system according to the present invention, a portable terminal that is owned by a user and is located in an electric motor vehicle transmits vehicle condition information of the electric motor vehicle including position information of the portable terminal that has been detected by a position detector of the portable terminal to a vehicle condition receiver of an energy management system (EMS) installed in a customer. A battery charging-and-discharging plan creating unit of the EMS creates a charging and discharging plan for a battery through the use of the vehicle condition information of the electric motor vehicle. A charging and discharging device performs at least one of charging and discharging of the battery of the electric motor vehicle in accordance with the battery charging-and-discharging plan for the battery.
    Type: Application
    Filed: April 11, 2014
    Publication date: January 7, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei MORI, Hiroshi FUJIOKA, Akinobu SUGIYAMA, Takanori MATSUNAGA
  • Patent number: 9142975
    Abstract: In a discharge system that outputs DC power from a vehicle battery to the outside, improved safety is obtained during discharge of the battery. A discharge system includes an electric car having a battery unit mounted thereon, and a discharge device that discharges the battery unit. The electric car includes a connector to which the discharge device is connected, and a power line that connects the connector and the battery unit to each other. In the power line, switches and switching elements are provided. The switches render the power line conducting upon permission from the discharge device and a battery management unit. The switching elements adjust a current flowing in the power line when the battery unit is discharged.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: September 22, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kohei Mori, Toshihide Satake, Akinobu Sugiyama, Hiroshi Fujioka, Takanori Matsunaga
  • Publication number: 20150134206
    Abstract: In a vehicle energy management device, a travel route calculator calculates a travel route of a vehicle, and an energy consumption-related information obtaining unit obtains energy consumption-related information along the travel route. An energy consumption amount computing unit calculates, based on the energy consumption-related information, an estimated value of an energy consumption amount by vehicle devices (required travel energy amount) when the vehicle travels along the travel route. A control plan preparing unit prepares a control plan for the vehicle devices based on the required travel energy amount. A feedback control unit performs feedback control of the vehicle devices to reduce a difference between the estimated value and an actual measured value of the energy consumption amount by the vehicle devices.
    Type: Application
    Filed: September 3, 2014
    Publication date: May 14, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takanori MATSUNAGA, Hiroshi FUJIOKA, Akinobu SUGIYAMA, Kohei MORI, Masataka SHIROZONO, Nobutaka NAKAMURA
  • Patent number: 9000449
    Abstract: A semiconductor substrate that includes a semiconductor layer that exhibits high crystallinity includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine, and a semiconductor layer that is grown on the surface of the graphite layer, or includes a substrate that includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine on its surface, a buffer layer that is grown on the surface of the graphite layer, and a semiconductor layer that is grown on the surface of the buffer layer.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 7, 2015
    Assignees: The University of Tokyo, Tokai Carbon Co., Ltd., National Institute of Advanced Industrial Science and Technology
    Inventors: Hiroshi Fujioka, Tetsuro Hirasaki, Hitoshi Ue, Junya Yamashita, Hiroaki Hatori
  • Patent number: 8928474
    Abstract: A charged-amount display part displays a battery charge rate of an entire battery pack according to kinds of charge sources. An example of displaying the battery charge rate in the form of a bar chart is shown. A speed display part displays a vehicle speed of a running electric vehicle. The running cost display part displays a running cost calculated based on consumed electric power of the battery.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: January 6, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toshihide Satake, Akinobu Sugiyama, Hiroshi Fujioka, Takanori Matsunaga, Kouhei Mori
  • Publication number: 20130082663
    Abstract: In a discharge system that outputs DC power from a vehicle battery to the outside, improved safety is obtained during discharge of the battery. A discharge system includes an electric car having a battery unit mounted thereon, and a discharge device that discharges the battery unit. The electric car includes a connector to which the discharge device is connected, and a power line that connects the connector and the battery unit to each other. In the power line, switches and switching elements are provided. The switches render the power line conducting upon permission from the discharge device and a battery management unit. The switching elements adjust a current flowing in the power line when the battery unit is discharged.
    Type: Application
    Filed: September 15, 2011
    Publication date: April 4, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei Mori, Toshihide Satake, Akinobu Sugiyama, Hiroshi Fujioka, Takanori Matsunaga
  • Publication number: 20130072776
    Abstract: A cerebral local portion cooling probe is composed so that a handheld module includes a Peltier device and a coolant liquid circulating part arranged so as to contact with the Peltier device and wirings, conduits and a heat radiating part are connected to this handheld module. Circulation of coolant liquid and operation of the Peltier device are implemented by means of a control unit, then the tip end of the handheld module is caused to contact with a cerebral local portion to be cooled and a state of the cerebral local portion is monitored in accordance with responses to the cooling. A cerebral function mapping device comprises a mapping module in which a plurality of cooling modules are arranged, each cooling module including a Peltier device and a coolant liquid circulating part in a manner similar to that of the cerebral local portion cooling probe.
    Type: Application
    Filed: March 25, 2011
    Publication date: March 21, 2013
    Applicant: YAMAGUCHI UNIVERSITY
    Inventors: Masami Fujii, Hiroshi Fujioka, Michiyasu Suzuki, Koji Kajiwara, Koichi Yoshikawa, Sadahiro Nomura, Takashi Saito
  • Patent number: 8260497
    Abstract: In the conventional vehicle control device, since a detection timing of turn is late, at the time of making the change of gear ratio based the detection timing, a sense of discomfort is brought to a driver. Moreover, steering wheel angle sensor, yaw rate sensor or lateral acceleration sensor is very expensive, resulting in the cost increase of the vehicle control devices. From information regarding a steering force that can be obtained from an electric power steering device, a turn intention of a driver is detected, and based the turning intention, the change of gear ratio is conducted.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: September 4, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toshihide Satake, Hiroshi Fujioka, Kohei Mori
  • Publication number: 20120187422
    Abstract: A semiconductor substrate that includes a semiconductor layer that exhibits high crystallinity includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine, and a semiconductor layer that is grown on the surface of the graphite layer, or includes a substrate that includes a graphite layer formed of a heterocyclic polymer obtained by condensing an aromatic tetracarboxylic acid and an aromatic tetramine on its surface, a buffer layer that is grown on the surface of the graphite layer, and a semiconductor layer that is grown on the surface of the buffer layer.
    Type: Application
    Filed: September 7, 2010
    Publication date: July 26, 2012
    Applicants: TOKAI CARBON CO., LTD., THE UNIVERSITY OF TOKYO
    Inventors: Hiroshi Fujioka, Tetsuro Hirasaki, Hitoshi Ue, Junya Yamashita, Hiroaki Hatori
  • Patent number: 8212335
    Abstract: To provide a semiconductor substrate, a semiconductor device, a light emitting device and an electronic device which have a low price, a long lifetime, and a high luminescent efficiency, and moreover are capable of being bent. A graphite substrate having heat resistance and having flexibility with respect to external force, and a first semiconductor layer, provided on the graphite substrate, which is made of a nitride of the Group XIII are included, and a method such as pulse sputter deposition can be used in forming the first semiconductor layer on the graphite substrate, to thereby allow inexpensive manufacture to be possible. In addition, since the nitride of the Group XIII is an inorganic substance, it has a long lifetime, and thus a high luminescent efficiency can be obtained. Moreover, since the graphite substrate has flexibility with respect to external force, it can also be bent.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: July 3, 2012
    Assignee: The University of Tokyo
    Inventor: Hiroshi Fujioka
  • Patent number: 8155818
    Abstract: Provided is a vehicle control system which can maintain stability of the vehicle with an inexpensive configuration without bringing discomfort to a driver when control intervenes.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: April 10, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kenji Nakajima, Toshihide Satake, Hiroshi Fujioka, Takanori Matsunaga, Masahiko Kurishige
  • Publication number: 20120074777
    Abstract: An electric power converting apparatus mainly includes a first power supply circuit, a second power supply circuit, a selection circuit, a control circuit, a bi-directional inverter circuit, and a charge/discharge circuit. The control circuit composed of a microcomputer or a microprocessor such as a DSP controls an operation of the electric power converting apparatus. The first power supply circuit or the second power supply circuit supplies a operation voltage for the control circuit. The first power supply circuit generates the operation voltage for the control circuit based on an AC voltage supplied from the electric power supply system. The second power supply circuit generates the operation voltage for the control circuit based on a DC voltage supplied from a DC power supply in an electric vehicle EV.
    Type: Application
    Filed: June 24, 2011
    Publication date: March 29, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akinobu SUGIYAMA, Hiroshi FUJIOKA, Takanori MATSUNAGA, Kohei MORI, Toshihide SATAKE
  • Publication number: 20120075090
    Abstract: A charged-amount display part displays a battery charge rate of an entire battery pack according to kinds of charge sources. An example of displaying the battery charge rate in the form of a bar chart is shown. A speed display part displays a vehicle speed of a running electric vehicle. The running cost display part displays a running cost calculated based on consumed electric power of the battery.
    Type: Application
    Filed: July 6, 2011
    Publication date: March 29, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Toshihide SATAKE, Akinobu SUGIYAMA, Hiroshi FUJIOKA, Takanori MATSUNAGA, Kouhei MORI
  • Publication number: 20100320450
    Abstract: To provide a semiconductor substrate, a semiconductor device, a light emitting device and an electronic device which have a low price, a long lifetime, and a high luminescent efficiency, and moreover are capable of being bent. A graphite substrate having heat resistance and having flexibility with respect to external force, and a first semiconductor layer, provided on the graphite substrate, which is made of a nitride of the Group XIII are included, and a method such as pulse sputter deposition can be used in forming the first semiconductor layer on the graphite substrate, to thereby allow inexpensive manufacture to be possible. In addition, since the nitride of the Group XIII is an inorganic substance, it has a long lifetime, and thus a high luminescent efficiency can be obtained. Moreover, since the graphite substrate has flexibility with respect to external force, it can also be bent.
    Type: Application
    Filed: February 20, 2009
    Publication date: December 23, 2010
    Inventor: Hiroshi Fujioka
  • Publication number: 20100163931
    Abstract: There is disclosed a hexagonal Group III-V nitride layer exhibiting high quality crystallinity capable of improving the properties of a semiconductor device such as a light emitting element. This nitride layer is a Group III-V nitride layer belonging to hexagonal crystal formed by growth on a substrate having a different lattice constant, which has a growth-plane orientation of {1-100} and in which a full width at half maximum b1 of angle dependence of X-ray diffraction intensity in a {1-210} plane perpendicular to the growth-plane upon X-ray incident angle from a direction parallel to the growth-plane satisfies the condition of 0.01°?b1?0.5°, or the full width at half maximum b2 of angle dependence of X-ray diffraction intensity in a {0001} plane upon X-ray incident angle from a direction parallel to the growth-plane satisfies the condition of 0.01°?b2?0.5°.
    Type: Application
    Filed: March 19, 2007
    Publication date: July 1, 2010
    Applicants: Kanagawa Academy of Science and Technology, The University of Tokyo, Mitsubishi Chemical Corporation
    Inventors: Hiroshi Fujioka, Atsushi Kobayashi, Hideyoshi Horie, Hidetaka Amanai, Satoru Magao
  • Publication number: 20100010711
    Abstract: In the conventional vehicle control device, since a detection timing of turn is late, at the time of making the change of gear ratio based the detection timing, a sense of discomfort is brought to a driver. Moreover, steering wheel angle sensor, yaw rate sensor or lateral acceleration sensor is very expensive, resulting in the cost increase of the vehicle control devices. From information regarding a steering force that can be obtained from an electric power steering device, a turn intention of a driver is detected, and based the turning intention, the change of gear ratio is conducted.
    Type: Application
    Filed: July 7, 2009
    Publication date: January 14, 2010
    Applicant: MITSUBISHI ELECTRONIC CORPORATION
    Inventors: Toshihide Satake, Hiroshi Fujioka, Kohei Mori
  • Publication number: 20090204284
    Abstract: Provided is a vehicle control system which can maintain stability of the vehicle with an inexpensive configuration without bringing discomfort to a driver when control intervenes.
    Type: Application
    Filed: September 27, 2007
    Publication date: August 13, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kenji Nakajima, Toshihide Satake, Hiroshi Fujioka, Takanori Matsunaga, Masahiko Kurishige