Patents by Inventor Ikuro Suga

Ikuro Suga 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).

  • Publication number: 20210092805
    Abstract: A table type cooking apparatus includes: a heating coil that inductively heats an object; a power transmission coil that transmits power to a power receiving device; a housing that houses the heating coil and the power transmission coil; a top plate provided on an upper surface of the housing; and a leg portion provided on a floor surface to support the housing on a floor surface. The top plate includes: a heating area provided as an area in which the object is inductively heated by the heating coil, a power transmission area provided as an area in which power is transmitted from the power transmission coil to the power receiving device, and a work area including at least an area in which when at least one of the heating coil and the power transmission coil is in a conductive state, a surface potential of a metal object is constant.
    Type: Application
    Filed: July 4, 2018
    Publication date: March 25, 2021
    Inventors: Jun BUNYA, Ikuro SUGA, Hayato YOSHINO
  • Publication number: 20210058053
    Abstract: A noise filter includes a first capacitor and a second capacitor which are two line-to-line capacitors. Currents flowing through the first capacitor and the second capacitor are in directions opposite to each other, and meanwhile, currents flowing through a first connection wire and a second connection wire are in the same direction and parallel to each other. Accordingly, magnetic coupling is caused between the connection wires and the line-to-line capacitors. Thus, the residual inductance of a line-to-line capacitor itself is reduced, whereby an attenuation characteristic for normal mode noise is further improved.
    Type: Application
    Filed: May 18, 2018
    Publication date: February 25, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yusuke YAMAKAJI, Ikuro SUGA
  • Publication number: 20210028703
    Abstract: A power converter is connected between a power supply source of a first direct current power and a power supply destination of a second direct current power obtained by performing power conversion on the first direct current power. The power converter includes: a switching element; a reactor; a first diode; a first capacitor; a second diode. The reactor is connected to a first end of the switching element. The first end of the switching element and a first end of the reactor are connected to a first connection point. A cathode of the first diode is connected to a second end of the reactor. The cathode of the first diode and the second end of the reactor are connected to a second connection point. The second diode includes an anode connected to the first connection point and a cathode connected to the power supply destination.
    Type: Application
    Filed: May 29, 2018
    Publication date: January 28, 2021
    Inventors: Kenji IWAZAKI, Koichi ARISAWA, Takashi YAMAKAWA, Takuya SHIMOMUGI, Satoru ICHIKI, Ikuro SUGA
  • Patent number: 10856368
    Abstract: A heating cooker system includes a first coil configured to produce a first high-frequency magnetic field by receiving supply of a first high-frequency current, a first inverter circuit configured to supply the first high-frequency current to the first coil, a first heating element positioned in reach of the first high-frequency magnetic field produced by the first coil to be inductively heated by the first coil, a second coil configured to produce a second high-frequency magnetic field by receiving supply of a second high-frequency current, a second inverter circuit configured to supply the second high-frequency current to the second coil, a power receiving coil positioned in reach of the second high-frequency magnetic field produced by the second coil to receive electric power from the second coil, and a second heating element configured to generate heat by the electric power received by the power receiving coil.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: December 1, 2020
    Assignees: Mitsubishi Electric Corporation, Mitsubishi Electric Home Appliance Co., Ltd.
    Inventors: Hayato Yoshino, Jun Bunya, Ikuro Suga, Miyuki Takeshita, Kazuhiro Kameoka
  • Patent number: 10797529
    Abstract: A wireless power transfer apparatus according to the present invention is a wireless power transfer apparatus for transferring power to a power receiving apparatus. The wireless power transfer apparatus includes a support on which the power receiving apparatus is placed, a coil disposed below the support, the coil generating a high-frequency magnetic field upon receiving supply of a high-frequency current, a communication device disposed below the support to perform radio communication with the power receiving apparatus, a first magnetic shield member made of an electric conductor, the first magnetic shield member being disposed between the communication device and the coil, and a second magnetic shield member made of an electric conductor or a magnetic body, the second magnetic shield member being disposed on at least one of a lower surface and a lateral surface of the communication device.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: October 6, 2020
    Assignees: Mistubishi Electric Corporation, Mitsubishi Electric Home Application Co., Ltd.
    Inventors: Ikuro Suga, Jun Bunya, Ryota Asakura
  • Patent number: 10734845
    Abstract: A wireless power transmission apparatus according to the present invention includes a coil which generates a high-frequency magnetic field upon reception of a high-frequency current, a support which supports the power receiving device within the high-frequency magnetic field, an inverter circuit which supplies the high-frequency current to the coil, and a controller which controls the driving of the inverter circuit. The controller performs a power transmission operation to transmit power to the power receiving device, if the impedance on the output side of the inverter circuit exhibits a resonant characteristic as the driving frequency of the inverter circuit is changed.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: August 4, 2020
    Assignees: Mitsubishi Electric Corporation, Mitsubishi Electric Home Appliance Co., Ltd.
    Inventors: Ikuro Suga, Jun Bunya, Miyuki Takeshita
  • Publication number: 20200245415
    Abstract: An induction heating cooker according to the present invention has a top plate on which a heater area indication indicating a mount position of to-be-heated object is formed, and a first coil and a second coil that are formed of an annular coil arranged below the heater area indication of the top plate, the second coil includes a first winding portion extending in a circumferential direction of the first coil, and a second winding portion spaced apart from the first winding portion and extending in the circumferential direction of the first coil, and the distance between the first winding portion and the top plate is different from the distance between the second winding portion and the top plate.
    Type: Application
    Filed: June 5, 2017
    Publication date: July 30, 2020
    Inventors: Ikuro SUGA, Tetsuya MATSUDA, Kazuhiro KAMEOKA
  • Publication number: 20200236741
    Abstract: A wireless power transfer system includes an induction heating cooking apparatus including a heating coil that produces a high-frequency magnetic field, a power reception device including a power reception coil that receives power from the heating coil, a first communication device provided on the power reception device to transmit a communication signal, a second communication device provided above the induction heating cooking apparatus to receive the communication signal from the first communication device, and a notification unit that indicates whether the power reception coil is located within a predetermined region that is set in advance with respect to the heating coil, when the second communication device receives the communication signal from the first communication device.
    Type: Application
    Filed: July 13, 2017
    Publication date: July 23, 2020
    Inventors: Jun BUNYA, Ikuro SUGA, Miyuki TAKESHITA, Hirohisa KUWANO, Ryota ASAKURA, Kazuhiro KAMEOKA
  • Publication number: 20200214091
    Abstract: An induction cooker according to the present disclosure includes a body including a top plate on which a heating target is placed, a frame formed to surround an outer periphery of the top plate, and having a discontinuous portion being electrically discontinuous from other parts of the frame, a heating coil disposed below the top plate, and configured to inductively heat the heating target, a driver circuit configured to supply electric power to the heating coil, a power transfer coil configured to transfer electric power by magnetic resonance, and a power transfer circuit configured to supply electric power to the power transfer coil, and a power receiving device including a power receiving coil configured to receive electric power from the power transfer coil by magnetic resonance, and a load circuit configured to operate by the electric power received by the power receiving coil.
    Type: Application
    Filed: October 12, 2017
    Publication date: July 2, 2020
    Inventors: Ikuro SUGA, Hayato YOSHINO
  • Publication number: 20200084842
    Abstract: An inductive heating cooker includes a main body and a power-receiver device. The main body includes a top plate on which a heating target is placed, a heating coil provided under the top plate and configured to inductively heat the heating target, a drive circuit configured to supply electric power to the heating coil, a power transmission coil configured to transmit the electric power by magnetic resonance, and a power transmission circuit configured to supply the electric power to the power transmission coil. The power-receiver device includes a power reception coil configured to receive the electric power from the power transmission coil by the magnetic resonance, and a load circuit configured to operate by the electric power received by the power reception coil.
    Type: Application
    Filed: January 27, 2017
    Publication date: March 12, 2020
    Inventors: Hayato YOSHINO, Ikuro SUGA, Jun BUNYA, Yuichiro ITO, Takeshi IIDA
  • Publication number: 20200021136
    Abstract: A wireless power transfer apparatus according to the present invention is a wireless power transfer apparatus for transferring power to a power receiving apparatus. The wireless power transfer apparatus includes a support on which the power receiving apparatus is placed, a coil disposed below the support, the coil generating a high-frequency magnetic field upon receiving supply of a high-frequency current, a communication device disposed below the support to perform radio communication with the power receiving apparatus, a first magnetic shield member made of an electric conductor, the first magnetic shield member being disposed between the communication device and the coil, and a second magnetic shield member made of an electric conductor or a magnetic body, the second magnetic shield member being disposed on at least one of a lower surface and a lateral surface of the communication device.
    Type: Application
    Filed: October 13, 2016
    Publication date: January 16, 2020
    Inventors: Ikuro SUGA, Jun BUNYA, Ryota ASAKURA
  • Publication number: 20200008272
    Abstract: An induction heating cooker includes a first coil, a second coil, a third coil, a first inverter circuit configured to supply a first high-frequency current to the first coil, a second inverter circuit configured to supply a second high-frequency current to the second coil, a third inverter circuit configured to supply a third high-frequency current to the third coil, a controller, and a load determining unit configured to determine a material of a heating object, wherein when a material of the heating object placed above the first coil is a magnetic material and a material of the heating object placed above the second coil includes a non-magnetic material, the controller operates the first inverter circuit and the second inverter circuit, and stops an operation of the third inverter circuit, and controls such that a frequency of the second high-frequency current is higher than a frequency of the first high-frequency current.
    Type: Application
    Filed: March 24, 2017
    Publication date: January 2, 2020
    Inventors: Ikuro SUGA, Jun BUNYA, Miyuki TAKESHITA, Kazuhiro KAMEOKA
  • Publication number: 20190131824
    Abstract: A wireless power transmission apparatus according to the present invention includes a coil which generates a high-frequency magnetic field upon reception of a high-frequency current, a support which supports the power receiving device within the high-frequency magnetic field, an inverter circuit which supplies the high-frequency current to the coil, and a controller which controls the driving of the inverter circuit. The controller performs a power transmission operation to transmit power to the power receiving device, if the impedance on the output side of the inverter circuit exhibits a resonant characteristic as the driving frequency of the inverter circuit is changed.
    Type: Application
    Filed: June 30, 2016
    Publication date: May 2, 2019
    Applicants: Mitsubishi Electric Corporation, Mitsubishi Electric Home Appliance Co., Ltd.
    Inventors: Ikuro SUGA, Jun BUNYA, Miyuki TAKESHITA
  • Publication number: 20190032922
    Abstract: A heating cooker system according to the present invention includes: an induction cooker including a first coil configured to produce a first high-frequency magnetic field for induction heating, a first inverter circuit configured to supply a first high-frequency current to the first coil, a second coil configured to produce a second high-frequency magnetic field, and a second inverter circuit provided independently of the first inverter circuit and configured to supply a second high-frequency current to the second coil; and a cooking device including a power receiving coil configured to wirelessly receive supply of electric power from the second high-frequency magnetic field when the power receiving coil is positioned in the second high-frequency magnetic field, and a cooking unit configured to be driven by the electric power received by the power receiving coil.
    Type: Application
    Filed: April 6, 2016
    Publication date: January 31, 2019
    Inventors: Hayato YOSHINO, Jun BUNYA, Ikuro SUGA
  • Publication number: 20180263084
    Abstract: A heating cooker system includes a first coil configured to produce a first high-frequency magnetic field by receiving supply of a first high-frequency current, a first inverter circuit configured to supply the first high-frequency current to the first coil, a first heating element positioned in reach of the first high-frequency magnetic field produced by the first coil to be inductively heated by the first coil, a second coil configured to produce a second high-frequency magnetic field by receiving supply of a second high-frequency current, a second inverter circuit configured to supply the second high-frequency current to the second coil, a power receiving coil positioned in reach of the second high-frequency magnetic field produced by the second coil to receive electric power from the second coil, and a second heating element configured to generate heat by the electric power received by the power receiving coil.
    Type: Application
    Filed: October 16, 2015
    Publication date: September 13, 2018
    Inventors: Hayato YOSHINO, Jun BUNYA, Ikuro SUGA, Miyuki TAKESHITA, Kazuhiro KAMEOKA
  • Patent number: 8232830
    Abstract: A highly efficient rectifier can readily replace a two-terminal diode. Its conduction losses are reduced from that of the two-terminal diode. Connected between the source and drain of a MOSFET including a parasitic diode are a micro-power converter section for boosting a conduction voltage Vds between the source and drain to a predetermined voltage, and a self-drive control section that operates based on a voltage output from the micro-power converter section. When the source and drain are conductive with each other, the micro-power converter section generates, from the conduction voltage Vds, a power source voltage for the self-drive control section, and the self-drive control section (4) continues drive control of the MOSFET.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: July 31, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Miyuki Takeshita, Akihiko Iwata, Ikuro Suga, Shigeki Harada, Kenichi Kawabata, Takashi Kumagai, Kenji Fujiwara
  • Patent number: 8194192
    Abstract: A projection display uses a light modulating device to modulate, in accordance with image data, light radiated from a light source, project the modulated light onto a screen, and display an image. The projection display separates a unit of time configuring the image data into an effective light time when the light modulating device can express the light as an image on the screen and an ineffective light time when the light modulating device cannot express the light as an image on the screen. The projection display increases the power supplied to the light source during the effective light time over the power supplied to the light source during the ineffective light time.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: June 5, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shigeki Harada, Takayoshi Nagai, Ikuro Suga, Akihiko Iwata, Yoshiteru Suzuki, Akira Okumura, Jun Someya, Kuniko Kojima
  • Publication number: 20100147274
    Abstract: There is obtained an ignition apparatus, for an internal combustion engine, that can make a predetermined output current flow in a stable manner so that the combustion state of the internal combustion engine can always be maintained in a good condition, even in the case where the voltage of the power source connected with the energy storing coil fluctuates.
    Type: Application
    Filed: October 1, 2009
    Publication date: June 17, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takayoshi NAGAI, Hirohisa Kuwano, Ikuro Suga, Yusuke Naruse
  • Patent number: 7730880
    Abstract: There is obtained an ignition apparatus, for an internal combustion engine, that can make a predetermined output current flow in a stable manner so that the combustion state of the internal combustion engine can always be maintained in a good condition, even in the case where the voltage of the power source connected with the energy storing coil fluctuates.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: June 8, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takayoshi Nagai, Hirohisa Kuwano, Ikuro Suga, Yusuke Naruse
  • Publication number: 20100073082
    Abstract: Provided is a highly efficient rectifier which can readily replace a two-terminal diode and whose conduction loss is reduced from that of the two-terminal diode. Connected between the source and drain of a MOSFET (2) including a parasitic diode (2a) are: a micro-power converter section (3) for boosting a conduction voltage Vds between the source and drain to a predetermined voltage; and a self-drive control section (4) that operates based on a voltage outputted from the micro-power converter section (3). When the source and drain are conductive with each other, the micro-power converter section (3) generates, from the conduction voltage Vds, a power source voltage for the self-drive control section (4), and the self-drive control section (4) continues drive control of the MOSFET (2).
    Type: Application
    Filed: December 20, 2007
    Publication date: March 25, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventors: Miyuki Takeshita, Akihiko Iwata, Ikuro Suga, Shigeki Harada, Kenichi Kawabata, Takashi Kumagai, Kenji Fujiwara