Patents by Inventor Kengo Nakao
Kengo Nakao 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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Publication number: 20240106017Abstract: A lead-acid battery management system and a lead-acid battery management program are described that appropriately manage bipolar lead-acid batteries to reduce a degree to which the lead-acid batteries impose a load on environment as much as possible and are necessary to cause a circulation cycle from manufacturing to reuse to reliably function. A lead-acid battery system includes multiple bipolar lead-acid batteries and a management and support apparatus configured to manage the lead-acid battery system. The management and support apparatus includes a recording unit configured to record operation history information of the bipolar lead-acid batteries and a state determination unit configured to determine necessity of replacement of respective ones of the bipolar lead-acid batteries.Type: ApplicationFiled: December 6, 2023Publication date: March 28, 2024Inventors: Noriyasu Iwane, Kanichiro Yamamoto, Tomoyuki Aogaki, Masanobu Aragaki, Hideto Nakamura, Kengo Nakao
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Publication number: 20220294214Abstract: An electric power network includes: a plurality of power routers each including a plurality of power ports; a plurality of interconnection lines configured to connect the power routers in a grid manner via the power ports; and an electric power apparatus configured to consume or supply electric power, the electric power apparatus being connected to a power port that is included in at least one of the power routers and that is not connected to any of the interconnection lines. At least one of the power ports of each of the power routers is set as a dependent port for which characteristics of direct-current power to be input or output are not controlled.Type: ApplicationFiled: May 31, 2022Publication date: September 15, 2022Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Masahiro RIKISO, Sumio KACHI, Hideto NAKAMURA, Kengo NAKAO
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Patent number: 9812233Abstract: A superconducting oxide thin film includes a superconducting layer formed on a supporting material. The superconducting layer includes an RE-based superconductor as a main component, and the RE-based superconductor includes a CuO chain that has a Cu vacancy portion.Type: GrantFiled: October 29, 2013Date of Patent: November 7, 2017Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Hirokazu Sasaki, Hajime Kasahara, Kengo Nakao, Masakazu Matsui
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Patent number: 9159898Abstract: An oxide superconducting thin film includes a substrate, and an intermediate layer and a superconducting layer provided in this order on the substrate. The intermediate layer has an average thickness of from 10 nm to 20 nm and a surface roughness Ra of 0.5 nm or less. The superconducting layer is formed on a surface of the intermediate layer and includes an oxide superconductor as a main component. A superconducting fault current limiter including the oxide superconducting thin film is also provided.Type: GrantFiled: May 31, 2012Date of Patent: October 13, 2015Assignees: FURUKAWA ELECTRIC CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Hajime Kasahara, Norio Matsui, Masakazu Matsui, Naoto Edo, Kengo Nakao, Toshiya Kumagai, Takaaki Manabe, Mitsugu Sohma
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Publication number: 20150287502Abstract: A superconducting oxide thin film includes a superconducting layer formed on a supporting material. The superconducting layer includes an RE-based superconductor as a main component, and the RE-based superconductor includes a CuO chain that has a Cu vacancy portion.Type: ApplicationFiled: October 29, 2013Publication date: October 8, 2015Inventors: Hirokazu Sasaki, Hajime Kasahara, Kengo Nakao, Masakazu Matsui
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Patent number: 9105794Abstract: An oxide superconducting thin film includes a substrate having a single crystal structure, the main face of the substrate and a crystal face of the single crystal structure having an angle therebetween; an intermediate layer formed on the main face of the substrate and having an axis oriented in a direction perpendicular to the crystal face; and a superconducting layer formed on the intermediate layer and containing, as a main component, an oxide superconductor having a c-axis oriented in a direction perpendicular to the surface of the intermediate layer. A superconducting fault current limiter and a method of manufacturing an oxide superconducting thin film are also provided.Type: GrantFiled: May 30, 2012Date of Patent: August 11, 2015Assignees: FURUKAWA ELECTRIC CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Kengo Nakao, Hajime Kasahara, Masakazu Matsui, Norio Matsui, Naoto Edo, Toshiya Kumagai, Takaaki Manabe, Mitsugu Sohma
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Patent number: 8925533Abstract: An ignition coil for the internal combustion engine has a cylinder portion and a head portion. A pillar portion that forms a part of a ventilation passage that communicates inside and outside of a plug hole via a sealing member, and a cover portion that covers the pillar portion without blockading an upper opening of a ventilation opening of the pillar portion are formed on a side of the head portion.Type: GrantFiled: June 7, 2011Date of Patent: January 6, 2015Assignee: Denso CorporationInventors: Kengo Nakao, Kazuhide Kawai, Katsunori Akimoto
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Publication number: 20140249034Abstract: A superconducting element for a superconducting fault current limiter, including a substrate 32, an intermediate layer 34 that is formed on the substrate 32, a superconducting layer 36 that is formed on the intermediate layer 34, an electrode 44 that is connected to the superconducting layer 36, and a metal fine particle sintered layer 40 that is interposed between the superconducting layer 36 and the electrode 44 and connects the superconducting layer 36 and the electrode 44.Type: ApplicationFiled: November 22, 2013Publication date: September 4, 2014Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Tomohiro NAKAYAMA, Weiming ZHOU, Hajime KASAHARA, Kengo NAKAO, Akifumi NAKAJIMA, Masakazu MATSUI
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Publication number: 20140087951Abstract: An oxide superconducting thin film includes a substrate, and an intermediate layer and a superconducting layer provided in this order on the substrate. The intermediate layer has an average thickness of from 10 nm to 20 nm and a surface roughness Ra of 0.5 nm or less. The superconducting layer is formed on a surface of the intermediate layer and includes an oxide superconductor as a main component. A superconducting fault current limiter including the oxide superconducting thin film is also provided.Type: ApplicationFiled: May 31, 2012Publication date: March 27, 2014Applicants: National Institute of Advanced Industrial Science and Technology, FURUKAWA ELECTRIC CO., LTD.Inventors: Hajime Kasahara, Norio Matsui, Masakazu Matsui, Naoto Edo, Kengo Nakao, Toshiya Kumagai, Takaaki Manabe, Mitsugu Sohma
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Publication number: 20140080714Abstract: An oxide superconducting thin film includes a substrate having a single crystal structure, the main face of the substrate and a crystal face of the single crystal structure having an angle therebetween; an intermediate layer formed on the main face of the substrate and having an axis oriented in a direction perpendicular to the crystal face; and a superconducting layer formed on the intermediate layer and containing, as a main component, an oxide superconductor having a c-axis oriented in a direction perpendicular to the surface of the intermediate layer. A superconducting fault current limiter and a method of manufacturing an oxide superconducting thin film are also provided.Type: ApplicationFiled: May 30, 2012Publication date: March 20, 2014Applicants: National Institute of Advance Industrial Science and Technology, FURUKAWA ELECTRIC CO., LTD.Inventors: Kengo Nakao, Hajime Kasahara, Masakazu Matsui, Norio Matsui, Naoto Edo, Toshiya Kumagai, Takaaki Manabe, Mitsugu Sohma
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Patent number: 8121844Abstract: A dimension measurement system is provided. The dimension measurement system includes a speech I/O device fit in an ear canal of a worker, generating a voice signal from vibration in the air emitted from an eardrum of the worker and propagated inside the ear canal, and outputting the voice signal and an information processing device realizing a speech recognition function recognizing a measurement value of a dimension of an object from the voice signal that the speech I/O device output and a judgment function judging if the measurement value satisfies a reference value of the object.Type: GrantFiled: May 26, 2009Date of Patent: February 21, 2012Assignee: Nippon Steel CorporationInventors: Kengo Nakao, Hidetaka Yamashita, Katsumi Hirano
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Publication number: 20110297133Abstract: An ignition coil for the internal combustion engine has a cylinder portion and a head portion. A pillar portion that forms a part of a ventilation passage that communicates inside and outside of a plug hole via a sealing member, and a cover portion that covers the pillar portion without blockading an upper opening of a ventilation opening of the pillar portion are formed on a side of the head portion.Type: ApplicationFiled: June 7, 2011Publication date: December 8, 2011Applicant: DENSO CORPORATIONInventors: Kengo NAKAO, Kazuhide KAWAI, Katsunori AKIMOTO
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Publication number: 20110066439Abstract: A dimension measurement system is provided. The dimension measurement system includes a speech I/O device fit in an ear canal of a worker, generating a voice signal from vibration in the air emitted from an eardrum of the worker and propagated inside the ear canal, and outputting the voice signal and an information processing device realizing a speech recognition function recognizing a measurement value of a dimension of an object from the voice signal that the speech I/O device output and a judgment function judging if the measurement value satisfies a reference value of the object.Type: ApplicationFiled: May 26, 2009Publication date: March 17, 2011Inventors: Kengo Nakao, Hidetaka Yamashita, Katsumi Hirano
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Patent number: 7753038Abstract: An ignition coil is inserted into a plughole of an engine. The ignition coil includes a coil case accommodating a primary coil and a secondary coil, and extending to define a cylindrical mount portion on a high voltage side. The mount portion includes a high voltage terminal conductive with the secondary coil. A coil spring conducts the high voltage terminal with the sparkplug. A plug cap has a circumferential portion attached to the mount portion. The plug cap circumferentially surrounds the high voltage terminal, the coil spring, and the sparkplug. The mount portion has a substantially annular space communicating with an inner gap in the coil case, and charged with an infilling resin to have a first resin high voltage end located on the high voltage side with respect to a low voltage end of the circumferential portion of the plug cap on a low voltage side.Type: GrantFiled: July 11, 2007Date of Patent: July 13, 2010Assignee: Denso CorporationInventors: Kengo Nakao, Norihito Fujiyama
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Patent number: 7501923Abstract: An ignition coil includes primary and secondary coils accommodated in a coil case extending to define a cylindrical mount portion on a high voltage side. The mount portion includes a high voltage terminal electrically connected with the secondary coil. A coil spring electrically connects the high voltage terminal with a sparkplug. An electrically insulative plug cap is attached to the mount portion. The coil spring has a low voltage end electrically connected with the secondary coil via the high voltage terminal. The coil spring has a high voltage end in contact with a terminal of the sparkplug. The coil spring has an intermediate portion between the low voltage end and the high voltage end. The plug cap has a spring support portion, which is partially defining the fitting hole and restricting the intermediate portion of the coil spring from being radially deformed.Type: GrantFiled: July 11, 2007Date of Patent: March 10, 2009Assignee: Denso CorporationInventors: Kengo Nakao, Norihito Fujiyama
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Publication number: 20080284304Abstract: There is provided a spark plug that includes a center electrode, an insulator, a housing, a ground electrode, an auxiliary ground electrode, and a projected portion in the housing. The housing has a though-hole which is formed in the housing along the longitudinal axis of the center electrode and has an opening of the through-hole at the first housing end. The ground electrode has a first end facing the end of the center electrode to form a first discharge gap. The auxiliary ground electrode has a first end facing an outer peripheral surface of the first end of the insulator to form a second discharge gap. The projected portion is formed in a hollow portion of the through-hole and is projected from an inner peripheral surface of the hollow portion of the housing.Type: ApplicationFiled: May 15, 2008Publication date: November 20, 2008Applicants: NIPPON SOKEN, INC., DENSO CORPORATIONInventors: Kiyohiko Watanabe, Shinichi Okabe, Kimitaka Saitoh, Masamichi Shibata, Ken Hanashi, Kengo Nakao
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Publication number: 20080022984Abstract: An ignition coil is inserted into a plughole of an engine. The ignition coil includes a coil case accommodating a primary coil and a secondary coil, and extending to define a cylindrical mount portion on a high voltage side. The mount portion includes a high voltage terminal conductive with the secondary coil. A coil spring conducts the high voltage terminal with the sparkplug. A plug cap has a circumferential portion attached to the mount portion. The plug cap circumferentially surrounds the high voltage terminal, the coil spring, and the sparkplug. The mount portion has a substantially annular space communicating with an inner gap in the coil case, and charged with an infilling resin to have a first resin high voltage end located on the high voltage side with respect to a low voltage end of the circumferential portion of the plug cap on a low voltage side.Type: ApplicationFiled: July 11, 2007Publication date: January 31, 2008Applicant: DENSO CORPORATIONInventors: Kengo Nakao, Norihito Fujiyama
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Publication number: 20080024258Abstract: An ignition coil includes primary and secondary coils accommodated in a coil case extending to define a cylindrical mount portion on a high voltage side. The mount portion includes a high voltage terminal electrically connected with the secondary coil. A coil spring electrically connects the high voltage terminal with a sparkplug. An electrically insulative plug cap is attached to the mount portion. The coil spring has a low voltage end electrically connected with the secondary coil via the high voltage terminal. The coil spring has a high voltage end in contact with a terminal of the sparkplug. The coil spring has an intermediate portion between the low voltage end and the high voltage end. The plug cap has a spring support portion, which is partially defining the fitting hole and restricting the intermediate portion of the coil spring from being radially deformed.Type: ApplicationFiled: July 11, 2007Publication date: January 31, 2008Applicant: DENSO CORPORATIONInventors: Kengo Nakao, Norihito Fujiyama