Patents by Inventor Hirofumi Okada

Hirofumi Okada 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: 8541977
    Abstract: A coil unit includes a planar coil that has a transmission side and a non-transmission side, a magnetic sheet provided over the non-transmission side of the planar coil, and a heat sink/magnetic shield plate stacked on a side of the magnetic sheet opposite to a side that faces the planar coil, the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet. The heat sink/magnetic shield plate has a thickness larger than that of the magnetic sheet.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: September 24, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Minoru Hasegawa, Hirofumi Okada, Yoichiro Kondo
  • Patent number: 8378774
    Abstract: A coil unit includes a coil including a coil wire, a magnetic substance for receiving magnetic force lines generated by the coil, a first substrate, and a temperature detection element disposed on the first substrate.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: February 19, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hirofumi Okada, Yoichiro Kondo
  • Patent number: 8269595
    Abstract: A coil unit includes a planar coil, a coil-receiving housing having a depression that receives the planar coil, the planar coil being disposed in the coil-receiving housing so that a transmission side of the planar coil faces a bottom of the depression, and a substrate having a mounting surface that is provided with a mounted component and faces a non-transmission side of the planar coil, an inner end lead line and an outer end lead line of the planar coil being connected to the substrate. The substrate is secured as a lid of the coil-receiving housing on an open end side of the depression of the coil-receiving housing.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: September 18, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hirofumi Okada, Yoichiro Kondo
  • Patent number: 8248540
    Abstract: In a broadcast signal receiving apparatus, a remote controller has, as one of a plurality of buttons thereof, a state changing button for instructing to change a source to be reproduced by a main body. The main body or the remote controller has a memory storing a first state changing table indicating an order in which the source is changed. When the state changing button is operated, if the broadcast signal is being received by the tuner portion and reproduced as the source, the main body performs state change such that the first source in the first state changing table is specified as the source to be reproduced by the main body.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: August 21, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takafumi Hayashi, Hiroshi Yamaga, Hirofumi Okada
  • Patent number: 8188826
    Abstract: A coil unit includes a coil formed by winding a coil wire, a wiring substrate, and a magnetic substance for receiving magnetic lines of force generated by the coil. The wiring substrate includes a connection terminal connected to both ends of the coil, an external connection terminal, and a wiring pattern for connecting the connection terminal and the external connection terminal. No circuit element other than the coil is mounted on the wiring substrate.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: May 29, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hirofumi Okada, Yoichiro Kondo
  • Patent number: 8084991
    Abstract: A power reception device includes a first resistance element having one end electrically connected to one end of a secondary coil which is able to be electromagnetically coupled to a primary coil of a power transmission devices a second resistance element having one end electrically connected to the other end of the first resistance element and having the other end supplied with a reference voltage, a power reception control device that obtains a frequency of an alternating current (AC) voltage induced on the secondary coil based on a voltage division signal output from the other end of the first resistance element and varies a magnitude of a load of the power reception device in accordance with the frequency, and a variable resistance element that has resistance varied in accordance with temperature and is connected to the first resistance element or the second resistance element in parallel.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: December 27, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Kentaro Yoda, Hirofumi Okada, Takahiro Kamijo
  • Patent number: 8022801
    Abstract: A coil unit includes a planar air-core coil that has an air-core section, a printed circuit board that is disposed on a transmission side of the planar air-core coil, and a magnetic sheet that is disposed on a non-transmission side of the planar air-core coil opposite to the transmission side. The planar air-core coil includes a lead line connected to an inner end of the planar air-core coil over the transmission side, and the printed circuit board includes a receiving section that receives the lead line.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 20, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yoichiro Kondo, Hirofumi Okada
  • Publication number: 20100253153
    Abstract: To provide coil units, electronic instruments and the like, which can radiate heat generated in a coil into a space outside a protective member, while the number of components does not increase. A coil unit 100 has a coil 110, and a protective member 120 that contacts a transmission surface of the coil 110 and covers at least the side of the transmission surface of the coil 110. The protective member 120 is composed of a resin material with an inorganic material added therein. The protective member 120 is also used as a heat radiation plate that dissipates heat generated in the coil 110 and radiates the heat.
    Type: Application
    Filed: March 16, 2010
    Publication date: October 7, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoichiro KONDO, Haruhiko SOGABE, Hirofumi OKADA
  • Publication number: 20090284341
    Abstract: A coil unit includes a coil formed by winding a coil wire, a wiring substrate, and a magnetic substance for receiving magnetic lines of force generated by the coil. The wiring substrate includes a connection terminal connected to both ends of the coil, an external connection terminal, and a wiring pattern for connecting the connection terminal and the external connection terminal. No circuit element other than the coil is mounted on the wiring substrate.
    Type: Application
    Filed: April 24, 2009
    Publication date: November 19, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirofumi Okada, Yoichiro Kondo
  • Publication number: 20090278666
    Abstract: A power reception device includes a first resistance element having one end electrically connected to one end of a secondary coil which is able to be electromagnetically coupled to a primary coil of a power transmission devices a second resistance element having one end electrically connected to the other end of the first resistance element and having the other end supplied with a reference voltage, a power reception control device that obtains a frequency of an alternating current (AC) voltage induced on the secondary coil based on a voltage division signal output from the other end of the first resistance element and varies a magnitude of a load of the power reception device in accordance with the frequency, and a variable resistance element that has resistance varied in accordance with temperature and is connected to the first resistance element or the second resistance element in parallel.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kentaro YODA, Hirofumi OKADA, Takahiro KAMIJO
  • Publication number: 20090278523
    Abstract: A non-contact power transmission device for supplying electric power to a secondary coil from a primary coil by electromagnetically coupling the primary coil to the secondary coil, includes a temperature detection element that detects temperature and a detection section that detects rise of temperature based on a first temperature at a first clock time and a second temperature at a second clock time detected by using the temperature detection element. When a degree of the rise of temperature is greater than a reference value, the non-contact power transmission device stops supplying of the electric power from the primary coil.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kentaro YODA, Hirofumi OKADA
  • Publication number: 20090278651
    Abstract: A coil unit includes a coil including a coil wire, a magnetic substance for receiving magnetic force lines generated by the coil, a first substrate, and a temperature detection element disposed on the first substrate.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 12, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirofumi OKADA, Yoichiro KONDO
  • Publication number: 20090267721
    Abstract: A coil unit includes a coil and a magnetic substance for receiving magnetic force lines generated by the coil, the magnetic substance including a first magnetic substance having a first magnetic permeability and a second magnetic substance having a second magnetic permeability.
    Type: Application
    Filed: April 22, 2009
    Publication date: October 29, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirofumi Okada, Mikimoto Jin, Kentaro Yoda, Takahiro Kamijo
  • Publication number: 20090066851
    Abstract: In a broadcast signal receiving apparatus, a remote controller has, as one of a plurality of buttons thereof, a state changing button for instructing to change a source to be reproduced by a main body. The main body or the remote controller has a memory storing a first state changing table indicating an order in which the source is changed. When the state changing button is operated, if the broadcast signal is being received by the tuner portion and reproduced as the source, the main body performs state change such that the first source in the first state changing table is specified as the source to be reproduced by the main body.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 12, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Takafumi HAYASHI, Hiroshi YAMAGA, Hirofumi OKADA
  • Publication number: 20090021212
    Abstract: A coil unit includes a planar coil that has a transmission side and a non-transmission side, a magnetic sheet provided over the non-transmission side of the planar coil, and a heat sink/magnetic shield plate stacked on a side of the magnetic sheet opposite to a side that faces the planar coil, the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet. The heat sink/magnetic shield plate has a thickness larger than that of the magnetic sheet.
    Type: Application
    Filed: July 18, 2008
    Publication date: January 22, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Minoru HASEGAWA, Hirofumi OKADA, Yoichiro KONDO
  • Publication number: 20090015362
    Abstract: A coil unit includes a planar coil, a coil-receiving housing having a depression that receives the planar coil, the planar coil being disposed in the coil-receiving housing so that a transmission side of the planar coil faces a bottom of the depression, and a substrate having a mounting surface that is provided with a mounted component and faces a non-transmission side of the planar coil, an inner end lead line and an outer end lead line of the planar coil being connected to the substrate. The substrate is secured as a lid of the coil-receiving housing on an open end side of the depression of the coil-receiving housing.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 15, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirofumi OKADA, Yoichiro KONDO
  • Publication number: 20080197957
    Abstract: A coil unit includes a planar air-core coil that has an air-core section, a printed circuit board that is disposed on a transmission side of the planar air-core coil, and a magnetic sheet that is disposed on a non-transmission side of the planar air-core coil opposite to the transmission side. The planar air-core coil includes a lead line connected to an inner end of the planar air-core coil over the transmission side, and the printed circuit board includes a receiving section that receives the lead line.
    Type: Application
    Filed: February 19, 2008
    Publication date: August 21, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoichiro Kondo, Hirofumi Okada
  • Patent number: 7267858
    Abstract: A packaging material is formed by a substrate, and an inner sealing layer comprising a polyolefin layer and an aqueous dispersion-type polyester resin layer successively disposed on the substrate. The aqueous dispersion-type amorphous polyester resin layer contains an anionic surfactant or an amphoteric surfactant and is substantially free from an organic solvent having a boiling point of at most 100° C. The thus-formed packaging material is excellent in aroma-retentivity, aroma non-adsorptivity, particulate non-adhesion, low residual solvent and sealability. The packaging material is also free from environmental problem and is therefore suitable as a packaging material for particulate medical supplies and health foodstuff.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: September 11, 2007
    Assignee: Kureha Corporation
    Inventors: Saichi Ono, Shinichi Hirakawa, Yoichiro Yotsuya, Hirofumi Okada
  • Patent number: 7098791
    Abstract: A security system for notifying a driver that a mechanical key is being retained in a portable device. The portable device has an indicator that is illuminated when the mechanical key is not retained in the portable device.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: August 29, 2006
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Hirofumi Okada
  • Patent number: 7068223
    Abstract: A three-axis antenna chip includes a cross-shaped core made of a magnetic substance. The core includes an X-axis core piece and a Y-axis core piece. The core pieces are laid on top of each other such that the core pieces extend perpendicular to each other. An X-axis coil portion is provided about the X-axis core piece, and a Y-axis coil portion is provided about the Y-axis core piece. A Z-axis coil portion is provided about a Z-axis that is perpendicular to the X-axis core piece and the Y-axis core piece. The three-axis antenna chip thus constructed is advantageous in reducing the size.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: June 27, 2006
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Yutaka Yoshida, Takayuki Hiramitsu, Akihito Kimura, Hirofumi Okada