Patents by Inventor Haruhiko Yoshida
Haruhiko Yoshida 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: 10186838Abstract: According to one embodiment, a semiconductor light-emitting element includes a ring-shaped light-emitting portion provided on a substrate, a mode-control light waveguide of Si provided on an upper or a lower surface side of the light-emitting portion, and including at least two portions located close to the light-emitting portion, and an output light waveguide of Si provided on the upper or the lower surface side, and including a portion located close to the light-emitting portion. The mode-control light waveguide has a structure for coupling light traveling in one of a clockwise circulating mode and a counterclockwise circulating mode, and feeding back the light in the other of the clockwise circulating mode and the counterclockwise circulating mode.Type: GrantFiled: February 28, 2017Date of Patent: January 22, 2019Assignees: KABUSHIKI KAISHA TOSHIBA, Photonics Electronics Technology Research AssociationInventors: Hirotaka Uemura, Haruhiko Yoshida, Kazuya Ohira, Mizunori Ezaki, Norio Iizuka
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Patent number: 10103514Abstract: A semiconductor light-emitting device according to one embodiment includes a substrate, a first light reflection structure provided in contact with the substrate, a buried layer surrounding the first light reflection structure, an optical semiconductor structure including an active layer, provided above the first light reflection structure, a second light reflection structure provided above the optical semiconductor structure, and a pair of electrodes which supply current to the optical semiconductor structure. The surface of the first light reflection structure and the surface of the buried layer are included in the same plane.Type: GrantFiled: March 14, 2016Date of Patent: October 16, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Kazuya Ohira, Mizunori Ezaki, Hirotaka Uemura, Haruhiko Yoshida, Norio Ilzuka, Hideto Furuyama
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Patent number: 10090582Abstract: The purpose of the present invention is to enable a secure attachment of an antenna element and to facilitate adjustment of the antenna element characteristics. Rearward of a spoiler are formed a plurality of lateral grooves extending in a left-right direction of a vehicle, and a plurality of vertical grooves extending in a front-rear direction of the vehicle. The plurality of lateral grooves and the plurality of vertical grooves form latticed grooves as grooves in the shape of a lattice for installing an antenna element. The antenna element is formed by a conductive wire. One end of the antenna element is connected to an amplifier, and the other end is opened.Type: GrantFiled: February 12, 2014Date of Patent: October 2, 2018Assignees: KOJIMA INDUSTRIES CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shunsuke Nakane, Ryuji Ando, Tomiyasu Hirayama, Haruhiko Yoshida, Hiroki Osada, Jun Yuyama, Takayoshi Naemura
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Publication number: 20180267217Abstract: A wavelength filter of an embodiment includes: a first layer having a plurality of first regions containing a first material and a plurality of second regions containing a second material having a refractive index higher than that of the first material, each of the second regions provided between each of the first regions; a second layer provided on the first layer and containing the first material; and a third layer having a plurality of third regions containing the first material, each of the third regions provided on the second layer above each of the first regions, and a plurality of fourth regions containing the second material, each of the fourth regions provided between each of the third regions.Type: ApplicationFiled: August 28, 2017Publication date: September 20, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Haruhiko YOSHIDA, Kazuya OHIRA, Hirotaka UEMURA, Kaori WARABI
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Publication number: 20180233930Abstract: A battery monitoring device includes a battery information input terminal, a battery state monitoring unit, an output terminal, a circuit board, and a housing member. The battery information input terminal is electrically connected to a battery state detecting member. The battery state monitoring unit receives a battery state detection signal via the battery information input terminal. The output terminal outputs monitoring information on the battery state corresponding to the battery state detection signal to an external arithmetic processor. The circuit board is provided with the battery information input terminal, the battery state monitoring unit, and the output terminal. The housing member is integrally formed with the battery information input terminal, the battery state monitoring unit, the output terminal, and the circuit board so as to accommodate at least the whole battery state monitoring unit and the whole circuit board and expose terminal connecting portions to the outside.Type: ApplicationFiled: January 12, 2018Publication date: August 16, 2018Applicant: Yazaki CorporationInventors: Yuki CHIYAJO, Yoshiaki NAKAYAMA, Kimihiro MATSUURA, Haruhiko YOSHIDA
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Publication number: 20180102456Abstract: According to one embodiment, a semiconductor optical device including a substrate, a filter layer arranged on the substrate, and a semiconductor light receiving element arranged on the filter layer, wherein the filter layer includes a periodic structure through which a light of a desired wavelength range in incident light is transmitted, and which is constituted of different refractive index materials.Type: ApplicationFiled: August 31, 2017Publication date: April 12, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hirotaka Uemura, Mizunori Ezaki, Kazuya Ohira, Norio Iizuka, Haruhiko Yoshida
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Publication number: 20180048120Abstract: According to one embodiment, a semiconductor light emitting device includes a substrate, a semiconductor light emitting structure including an active layer, a first light reflecting structure disposed between the substrate and the semiconductor light emitting structure, a second light reflecting structure disposed on an upper side of the semiconductor light emitting structure and a pair of electrodes applying a current to the semiconductor light emitting structure. At least one of the first and second light reflecting structures is a multilayer reflective film including a plurality of structure layers, each structure layer including a high refractive index region and a low refractive index region which are disposed such that a refractive index of the structure layer is periodically changed, and a low refractive index layer disposed between two adjacent structure layers.Type: ApplicationFiled: February 28, 2017Publication date: February 15, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Haruhiko YOSHIDA, Kazuya OHIRA, Hirotaka UEMURA, Norio llZUKA
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Patent number: 9842736Abstract: According to one embodiment, a semiconductor photo-receiving device includes a substrate, a light propagation layer and a semiconductor layer including a lowest layer and upper layers. The upper layers include an optical absorption layer. The light propagation layer includes a first light input layer, a first annular layer at a desired distance from the first light input layer, and a first optical waveguide connecting the first light input layer and annular layer. The lowest layer of the semiconductor layer includes a second light input layer, a second annular layer at a desired distance from the second light input layer, and a second optical waveguide connecting the second light input layer and annular layer.Type: GrantFiled: December 27, 2016Date of Patent: December 12, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Haruhiko Yoshida, Kazuya Ohira
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Publication number: 20170271544Abstract: According to one embodiment, a semiconductor photo-receiving device includes a substrate, a light propagation layer and a semiconductor layer including a lowest layer and upper layers. The upper layers include an optical absorption layer. The light propagation layer includes a first light input layer, a first annular layer at a desired distance from the first light input layer, and a first optical waveguide connecting the first light input layer and annular layer. The lowest layer of the semiconductor layer includes a second light input layer, a second annular layer at a desired distance from the second light input layer, and a second optical waveguide connecting the second light input layer and annular layer.Type: ApplicationFiled: December 27, 2016Publication date: September 21, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Haruhiko YOSHIDA, Kazuya OHIRA
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Patent number: 9767683Abstract: A battery monitoring device which is mounted in a vehicle and detects state information of a battery including a plurality of cells connected in series, the battery monitoring device is provided with a detection unit mounted on the battery, and a mounting member mounted on the battery. The detection unit comprises a board including a circuit for detecting the state information of the battery, and a first non-contact communication unit which is mounted on the board and performs non-contact communication via electromagnetic wave. The mounting member comprises a second non-contact communication unit which performs non-contact communication via the electromagnetic wave. The first non-contact communication unit transfers the state information of the battery to the second non-contact communication unit, and the second non-contact communication unit transfers the state information of the battery transferred from the first non-contact communication unit to a host device.Type: GrantFiled: February 18, 2016Date of Patent: September 19, 2017Assignee: YAZAKI CORPORATIONInventors: Hidehiko Shimizu, Haruhiko Yoshida, Ryohtaroh Murata, Yoichi Ido
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Patent number: 9755097Abstract: According to one embodiment, a semiconductor photoreceiving device includes a substrate, a first structural layer provided on the substrate, in which light enters from the substrate side and in which a refractive index changes periodically, a semiconductor layer provided on the first structural layer and including an optical absorption layer, a reflective layer provided on the semiconductor layer, and a pair of electrodes configured to apply voltage to the optical absorption layer.Type: GrantFiled: March 11, 2016Date of Patent: September 5, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Haruhiko Yoshida, Kazuya Ohira, Mizunori Ezaki
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Publication number: 20170170630Abstract: According to one embodiment, a semiconductor light-emitting element includes a ring-shaped light-emitting portion provided on a substrate, a mode-control light waveguide of Si provided on an upper or a lower surface side of the light-emitting portion, and including at least two portions located close to the light-emitting portion, and an output light waveguide of Si provided on the upper or the lower surface side, and including a portion located close to the light-emitting portion. The mode-control light waveguide has a structure for coupling light traveling in one of a clockwise circulating mode and a counterclockwise circulating mode, and feeding back the light in the other of the clockwise circulating mode and the counterclockwise circulating mode.Type: ApplicationFiled: February 28, 2017Publication date: June 15, 2017Applicants: KABUSHIKI KAISHA TOSHIBA, Photonics Electronics Technology Research AssociationInventors: Hirotaka UEMURA, Haruhiko YOSHIDA, Kazuya OHIRA, Mizunori EZAKI, Norio IIZUKA
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Patent number: 9594215Abstract: According to one embodiment, a semiconductor light-receiving element, includes a light-receiving part provided on a substrate and having a semiconductor multilayer structure of a circular outer shape, a optical input part formed of a peripheral portion of the semiconductor multilayer structure, and having a tapered front end, and a silicon-thin-line waveguide configured to couple light with the optical input part. The waveguide includes a linear part extending through the optical input part to an at least one area of an upper-side area and a lower-side area of the light-receiving part, and a spiral part connected to the linear part and formed in the at least one area.Type: GrantFiled: September 10, 2015Date of Patent: March 14, 2017Assignees: KABUSHIKI KAISHA TOSHIBA, Photonics Electronics Technology Research AssociationInventors: Haruhiko Yoshida, Kazuya Ohira, Mizunori Ezaki
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Publication number: 20160276806Abstract: A semiconductor light-emitting device according to one embodiment includes a substrate, a first light reflection structure provided in contact with the substrate, a buried layer surrounding the first light reflection structure, an optical semiconductor structure including an active layer, provided above the first light reflection structure, a second light reflection structure provided above the optical semiconductor structure, and a pair of electrodes which supply current to the optical semiconductor structure. The surface of the first light reflection structure and the surface of the buried layer are included in the same plane.Type: ApplicationFiled: March 14, 2016Publication date: September 22, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kazuya OHIRA, Mizunori Ezaki, Hirotaka Uemura, Haruhiko Yoshida, Norio IIzuka, Hideto Furuyama
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Publication number: 20160276517Abstract: According to one embodiment, a semiconductor photoreceiving device includes a substrate, a first structural layer provided on the substrate, in which light enters from the substrate side and in which a refractive index changes periodically, a semiconductor layer provided on the first structural layer and including an optical absorption layer, a reflective layer provided on the semiconductor layer, and a pair of electrodes configured to apply voltage to the optical absorption layer.Type: ApplicationFiled: March 11, 2016Publication date: September 22, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Haruhiko YOSHIDA, Kazuya OHIRA, Mizunori EZAKI
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Publication number: 20160247389Abstract: A battery monitoring device which is mounted in a vehicle and detects state information of a battery including a plurality of cells connected in series, the battery monitoring device is provided with a detection unit mounted on the battery, and a mounting member mounted on the battery. The detection unit comprises a board including a circuit for detecting the state information of the battery, and a first non-contact communication unit which is mounted on the board and performs non-contact communication via electromagnetic wave. The mounting member comprises a second non-contact communication unit which performs non-contact communication via the electromagnetic wave. The first non-contact communication unit transfers the state information of the battery to the second non-contact communication unit, and the second non-contact communication unit transfers the state information of the battery transferred from the first non-contact communication unit to a host device.Type: ApplicationFiled: February 18, 2016Publication date: August 25, 2016Inventors: Hidehiko Shimizu, Haruhiko Yoshida, Ryohtaroh Murata, Yoichi Ido
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Patent number: 9341776Abstract: An optical interconnection device includes a light-emitting element, a light-receiving element, and an optical waveguide. Both the light-emitting element and the light-receiving element have a layered structure and are formed on a silicon substrate. At least a portion of the light-emitting element is embedded in an insulator. At least a portion of the light-receiving element is embedded in the insulator. The optical waveguide is formed over the insulator, and is optically coupled to the light-emitting element and the light-receiving element by distributed coupling.Type: GrantFiled: August 6, 2013Date of Patent: May 17, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Norio Iizuka, Kazuya Ohira, Haruhiko Yoshida, Mizunori Ezaki, Hideto Furuyama, Kentaro Kobayashi, Hiroshi Uemura
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Patent number: 9323003Abstract: An optical device according to an embodiment includes a laser light source, a first optical waveguide that propagates light being output from the laser light source, a first distribution device that distribute the light into n lights, n second optical waveguides that propagates the n lights being output from the first distribution device, n second distribution devices that distribute each of the n lights into m lights, n×m third optical waveguides arranged in a matrix form and propagates the n×m lights being output from the m second distribution devices, a control electrode that apply a voltage or current to each of the third optical waveguides, and control phase of the light propagating through the third optical waveguides, and an output end surface that output the n×m lights.Type: GrantFiled: January 28, 2014Date of Patent: April 26, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Kazuya Ohira, Mizunori Ezaki, Nobuo Suzuki, Norio Iizuka, Haruhiko Yoshida
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Publication number: 20160087398Abstract: According to one embodiment, a semiconductor light-receiving element, includes a light-receiving part provided on a substrate and having a semiconductor multilayer structure of a circular outer shape, a optical input part formed of a peripheral portion of the semiconductor multilayer structure, and having a tapered front end, and a silicon-thin-line waveguide configured to couple light with the optical input part. The waveguide includes a linear part extending through the optical input part to an at least one area of an upper-side area and a lower-side area of the light-receiving part, and a spiral part connected to the linear part and formed in the at least one area.Type: ApplicationFiled: September 10, 2015Publication date: March 24, 2016Applicants: KABUSHIKI KAISHA TOSHIBA, Photonics Electronics Technology Research AssociationInventors: Haruhiko YOSHIDA, Kazuya OHIRA, Mizunori EZAKI
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Publication number: 20160056534Abstract: The purpose of the present invention is to enable a secure attachment of an antenna element and to facilitate adjustment of the antenna element characteristics. Rearward of a spoiler are formed a plurality of lateral grooves extending in a left-right direction of a vehicle, and a plurality of vertical grooves extending in a front-rear direction of the vehicle. The plurality of lateral grooves and the plurality of vertical grooves form latticed grooves as grooves in the shape of a lattice for installing an antenna element. The antenna element is formed by a conductive wire. One end of the antenna element is connected to an amplifier, and the other end is opened.Type: ApplicationFiled: February 12, 2014Publication date: February 25, 2016Inventors: SHUNSUKE NAKANE, RYUJI ANDO, TOMIYASU HIRAYAMA, HARUHIKO YOSHIDA, HIROKI OSADA, JUN YUYAMA, TAKAYOSHI NAEMURA