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).
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Patent number: 8541977Abstract: 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: GrantFiled: July 18, 2008Date of Patent: September 24, 2013Assignee: Seiko Epson CorporationInventors: Minoru Hasegawa, Hirofumi Okada, Yoichiro Kondo
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Patent number: 8378774Abstract: 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: GrantFiled: May 1, 2009Date of Patent: February 19, 2013Assignee: Seiko Epson CorporationInventors: Hirofumi Okada, Yoichiro Kondo
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Patent number: 8269595Abstract: 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: GrantFiled: July 10, 2008Date of Patent: September 18, 2012Assignee: Seiko Epson CorporationInventors: Hirofumi Okada, Yoichiro Kondo
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Patent number: 8248540Abstract: 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: GrantFiled: September 4, 2008Date of Patent: August 21, 2012Assignee: SANYO Electric Co., Ltd.Inventors: Takafumi Hayashi, Hiroshi Yamaga, Hirofumi Okada
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Patent number: 8188826Abstract: 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: GrantFiled: April 24, 2009Date of Patent: May 29, 2012Assignee: Seiko Epson CorporationInventors: Hirofumi Okada, Yoichiro Kondo
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Patent number: 8084991Abstract: 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: GrantFiled: May 1, 2009Date of Patent: December 27, 2011Assignee: Seiko Epson CorporationInventors: Kentaro Yoda, Hirofumi Okada, Takahiro Kamijo
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Patent number: 8022801Abstract: 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: GrantFiled: February 19, 2008Date of Patent: September 20, 2011Assignee: Seiko Epson CorporationInventors: Yoichiro Kondo, Hirofumi Okada
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Publication number: 20100253153Abstract: 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: ApplicationFiled: March 16, 2010Publication date: October 7, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Yoichiro KONDO, Haruhiko SOGABE, Hirofumi OKADA
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Publication number: 20090284341Abstract: 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: ApplicationFiled: April 24, 2009Publication date: November 19, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Hirofumi Okada, Yoichiro Kondo
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Publication number: 20090278666Abstract: 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: ApplicationFiled: May 1, 2009Publication date: November 12, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Kentaro YODA, Hirofumi OKADA, Takahiro KAMIJO
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Publication number: 20090278523Abstract: 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: ApplicationFiled: May 1, 2009Publication date: November 12, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Kentaro YODA, Hirofumi OKADA
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Publication number: 20090278651Abstract: 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: ApplicationFiled: May 1, 2009Publication date: November 12, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Hirofumi OKADA, Yoichiro KONDO
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Publication number: 20090267721Abstract: 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: ApplicationFiled: April 22, 2009Publication date: October 29, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Hirofumi Okada, Mikimoto Jin, Kentaro Yoda, Takahiro Kamijo
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Publication number: 20090066851Abstract: 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: ApplicationFiled: September 4, 2008Publication date: March 12, 2009Applicant: SANYO ELECTRIC CO., LTD.Inventors: Takafumi HAYASHI, Hiroshi YAMAGA, Hirofumi OKADA
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Publication number: 20090021212Abstract: 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: ApplicationFiled: July 18, 2008Publication date: January 22, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Minoru HASEGAWA, Hirofumi OKADA, Yoichiro KONDO
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Publication number: 20090015362Abstract: 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: ApplicationFiled: July 10, 2008Publication date: January 15, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Hirofumi OKADA, Yoichiro KONDO
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Publication number: 20080197957Abstract: 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: ApplicationFiled: February 19, 2008Publication date: August 21, 2008Applicant: SEIKO EPSON CORPORATIONInventors: Yoichiro Kondo, Hirofumi Okada
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Patent number: 7267858Abstract: 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: GrantFiled: June 18, 2004Date of Patent: September 11, 2007Assignee: Kureha CorporationInventors: Saichi Ono, Shinichi Hirakawa, Yoichiro Yotsuya, Hirofumi Okada
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Patent number: 7098791Abstract: 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: GrantFiled: December 10, 2003Date of Patent: August 29, 2006Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventor: Hirofumi Okada
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Patent number: 7068223Abstract: 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: GrantFiled: June 26, 2003Date of Patent: June 27, 2006Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Yutaka Yoshida, Takayuki Hiramitsu, Akihito Kimura, Hirofumi Okada