Patents by Inventor Hiroshi Matsuda
Hiroshi Matsuda 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: 20250052823Abstract: In a battery abnormality detection system, a data acquirer acquires a current flowing through a battery and a temperature of the battery. A determiner determines presence or absence of abnormal heat generation of the battery based on a relation between an amount of the current flowing through the battery in a certain period and a temperature rise of the battery in the certain period. The determiner determines the presence or absence of the abnormal heat generation of the battery based on the current and the temperature of the battery in a charging period in which the temperature of the battery exceeds a set temperature.Type: ApplicationFiled: December 7, 2022Publication date: February 13, 2025Inventors: Takashi MATSUDA, Yusuke ITAKURA, Shinya NISHIKAWA, Masaaki TAKEGATA, Hiroshi TAKAO, Takashi IIDA
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Publication number: 20250051895Abstract: Steel sheet and plated steel sheet comprised of steel sheet with a thin thickness in which sufficient strength and plateability or chemical convertibility are both achieved, i.e., steel sheet having a chemical composition containing, by mass %, C: 0.05 to 0.30%, Si: 0.01 to 2.50%, Mn: 0.80 to 3.00%, Al: 0.010 to 2.000%, etc. and having a balance comprising Fe and impurities and having a thickness of 0.4 to 2.0 mm, in which steel sheet, a tensile strength is 550 to 1500 MPa, an internal oxidation layer and decarburized layer are contained, when a thickness of the decarburized layer per side of the steel sheet: A (?m), a bulk C concentration of the steel sheet: Cb (%), and a thickness of the steel sheet: t (mm), 0.01?A/t?0.15, and a C concentration at the ½A position is Cb/2 or more and plated steel sheet using that steel sheet.Type: ApplicationFiled: December 9, 2022Publication date: February 13, 2025Applicant: NIPPON STEEL CORPORATIONInventors: Keitaro MATSUDA, Hiroshi TAKEBAYASHI
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Patent number: 12221705Abstract: Provided is an alloyed galvanized steel sheet with excellent resistance to cracking in resistance welding at a welded portion, even if crystal orientations of an Fe-based electroplating layer and a cold-rolled steel sheet are integrated at a high ratio at the interface between the Fe-based electroplating layer and the cold-rolled steel sheet. The alloyed galvanized steel sheet has a Si-containing cold-rolled steel sheet containing Si in an amount of 0.1 mass % to 3.0 mass %; an Fe-based electroplating layer formed on at least one surface of the Si-containing cold-rolled steel sheet with a coating weight per surface exceeding 20.0 g/m2, and an alloyed galvanized layer formed on the Fe-based electroplating layer, where crystal orientations of the Fe-based electroplating layer and the Si-containing cold-rolled steel sheet are integrated at a ratio of more than 50% at the interface between the Fe-based electroplating layer and the Si-containing cold-rolled steel sheet.Type: GrantFiled: November 5, 2021Date of Patent: February 11, 2025Assignee: JFE STEEL CORPORATIONInventors: Shunsuke Yamamoto, Katsutoshi Takashima, Mai Aoyama, Yusuke Okumura, Tomomi Kanazawa, Katsuya Hoshino, Hiroshi Matsuda, Ei Okumura, Yoichi Makimizu, Masaki Koba
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Patent number: 12208462Abstract: A welding process used in a method of manufacturing a steel sheet assembly includes spot welding steel sheets performed for a heat time of 0.08 seconds or more using a convex electrode with a tip radius of curvature of 20 mm or more or a flat electrode such that the weld force F (kN) for initial 0.03 seconds of the heat time satisfies formula: F<0.00125×(1+0.75×tall)+3 where TS (MPa) denotes an average strength of the steel sheets and represents a weighted mean value of a thickness of each of the steel sheets, and tall (mm) denotes a total thickness of the steel sheets (the sum of the thicknesses of the steel sheets).Type: GrantFiled: May 13, 2021Date of Patent: January 28, 2025Assignee: JFE Steel CorporationInventors: Hiroshi Matsuda, Yasuaki Okita, Muneo Matsushita, Rinsei Ikeda, Kenji Oi
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Publication number: 20250030765Abstract: A first electric device comprises a first wireless communicator, an electric actuator, and a first electronic controller. The first electronic controller is configured to control the electric actuator to generate the actuation force based on a user input received by the second electric device in a connection state where the first wireless communicator is paired with the second wireless communicator and where the first wireless communicator is wirelessly connected to the second wireless communicator. The first electronic controller is configured to control the first wireless communicator to reconnect to the second wireless communicator based on the user input received by the second electric device in a disconnection state where the first wireless communicator is paired with the second wireless communicator and where the first wireless communicator is wirelessly disconnected from the second wireless communicator.Type: ApplicationFiled: July 21, 2023Publication date: January 23, 2025Applicant: SHIMANO INC.Inventors: Hiroshi MATSUDA, Hiroko MATSUBAYASHI, Toru TAKAYANAGI, Tomohiro KONDO
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Patent number: 12194562Abstract: Disclosed are rotating tools for double-sided friction stir welding that are applied to double-sided friction stir welding, which is a technique for welding two metal plates by rotating a pair of rotating tools, which oppose each other, in opposite directions, a double-sided friction stir welding apparatus that uses the rotating tools, and a double-sided friction stir welding method. A pair of rotating tools for double-sided friction stir welding that are used in double-sided friction stir welding, which is a technique for welding metal plates by using a pair of rotating tools that are each disposed on one of first and second surfaces of an unwelded portion of the metal plates such that the rotating tools rotate in opposite directions, include end portions each of which is formed in a circular and planar shape. The end portions are each made of a material harder than the metal plates.Type: GrantFiled: March 20, 2019Date of Patent: January 14, 2025Assignee: JFE Steel CorporationInventors: Muneo Matsushita, Rinsei Ikeda, Hiroshi Matsuda, Daiki Yamagishi
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Publication number: 20250002109Abstract: A memory device is provided for a human-powered vehicle. The memory device basically includes a base, memory and an electronic controller. The memory is provided on the base. The electronic controller is configured to control the memory so that the memory stores log-related information received from at least one component provided on the human-powered vehicle. The base is arranged in a cavity of a frame of the human-powered vehicle.Type: ApplicationFiled: May 9, 2024Publication date: January 2, 2025Inventors: Hiroshi MATSUDA, Toyoto SHIRAI, Minoru OMORI, Tomohiro KONDO
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Publication number: 20240424595Abstract: A resistance spot welded joint having a resistance spot weld formed by resistance-spot-welding two or more steel sheets includes at least one high strength steel sheet. The high strength steel sheet has a specific chemical composition. The hardness Hv1 of a first region of a heat-affected zone and the hardness Hmv of martensite in a nugget as a whole satisfy the relation Hv1?0.78×Hmw, and the hardness Hv2 of a second region of the heat-affected zone and the hardness Hv1 of the first region satisfy the relation Hv2?1.10×Hv1. The hardness Hv3 of a third region of the heat-affected zone and the hardness Hv2 of the second region satisfy the relation Hv3?0.90×Hv2.Type: ApplicationFiled: September 29, 2022Publication date: December 26, 2024Applicant: JFE STEEL CORPORATIONInventors: Reiko ENDO, Katsutoshi TAKASHIMA, Hiroshi MATSUDA
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Patent number: 12151299Abstract: A resistance spot welding method comprises: performing test welding; and performing actual welding after the test welding, wherein in main current passage in the actual welding, adaptive control welding is performed, and in subsequent current passage in the actual welding, current passage is performed by constant current control with a current determined based on an electrical property between electrodes in each of main current passage in the test welding and the main current passage in the actual welding.Type: GrantFiled: June 17, 2019Date of Patent: November 26, 2024Assignee: JFE STEEL CORPORATIONInventors: Chikaumi Sawanishi, Hiroshi Matsuda, Rinsei Ikeda
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Publication number: 20240376918Abstract: An arc welded joint and an arc welding method. The arc welded joint has a weld formed by arc welding of an overlap of at least two steel sheets. The weld has a specified flank angle ?. In a region extending 2.0 mm from a bead toe of the weld in a weld metal direction and also extending 2.0 mm from the bead toe in a base material direction, a slag-covered area ratio is 50% or less.Type: ApplicationFiled: April 26, 2022Publication date: November 14, 2024Applicant: JFE STEEL CORPORATIONInventors: Kyohei KONISHI, Hiroshi MATSUDA, Koichi TANIGUCHI
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Publication number: 20240367254Abstract: A resistance spot welded member and a resistance spot welding method. The resistance spot welded member includes a resistance spot weld formed by resistance-spot-welding a plurality of steel sheets including at least one high strength coated steel sheet. The high strength coated steel sheet has a specific chemical composition. The at least one high strength coated steel sheet includes a coated layer, a base metal, and an Fe-based electroplated base layer interposed between the coated layer and the base metal. The amount of solute Si and the amount of solute Mn in a region on a steel sheet surface in the vicinity of the edge of the corona of the resistance spot weld are 35% or less of the amount of solute Si and 35% or less of the amount of solute Mn, respectively, at a position ¼ of the sheet thickness.Type: ApplicationFiled: March 14, 2022Publication date: November 7, 2024Applicant: JFE STEEL CORPORATIONInventors: Katsutoshi TAKASHIMA, Shunsuke YAMAMOTO, Katsuya HOSHINO, Hiroshi MATSUDA
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Patent number: 12134153Abstract: A gas-shielded arc welding method includes welding a steel plate having a tensile strength of 780 MPa or more while feeding a consumable electrode via a welding torch and flowing a shielding gas. The consumable electrode includes, in mass %, C: 0 to 0.20%, Si: 0 to 0.50%, Mn: 0 to 0.50%, Cr: 1.00% to 9.00%, S: 0.0020% to 0.0600%, and Ni: 0 to 0.50%. The shielding gas includes, in vol. %, at least one of CO2 and O2: 1% to 15% in total, with the remainder being Ar and unavoidable impurities. Welding is performed under the condition satisfying the relationship of 1?{?0.05×[CO2+O2]}+[Cr]?8.3, and [Cr] represents the content of Cr in the consumable electrode, and [CO2+O2] represents a total content of at least one of CO2 and O2 in the shielding gas.Type: GrantFiled: June 19, 2017Date of Patent: November 5, 2024Assignees: Kobe Steel, Ltd., JFE Steel CorporationInventors: Minoru Miyata, Reiichi Suzuki, Hiroshi Matsuda, Rinsei Ikeda, Sachiko Suzuki, Satoru Ando
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Publication number: 20240352959Abstract: A resistance spot welded joint is formed by resistance-spot-welding two or more steel sheets including at least one high strength steel sheet. The high strength steel sheet has a chemical composition containing, in mass %, C: 0.05 to 0.6%, Si: 0.1 to 2.0%, Mn: 1.5 to 4.0%, and P: 0.10% or less, with the balance being Fe and incidental impurities. The hardness of a softest nugget region is 90% or less of the hardness of the heat-affected zone. The softest nugget region has a microstructure including tempered martensite. The average number density of carbide particles having a diameter of 100 nm or more in the softest nugget region is 10 or more per 5 ?m2 in a cross section of the steel sheets.Type: ApplicationFiled: July 21, 2022Publication date: October 24, 2024Applicant: JFE STEEL CORPORATIONInventors: Reiko ENDO, Katsutoshi TAKASHIMA, Hiroshi MATSUDA
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Publication number: 20240351133Abstract: Provided is a friction stir spot welded joint having high joint strength even in the case where a high strength steel sheet, particularly a steel sheet with a tensile strength (TS) of 980 MPa or more, is used as a material to be welded. An annular groove is formed on an upper surface of an upper sheet out of overlapping steel sheets, and a shape, microstructure, and hardness of a welded portion are appropriately controlled simultaneously.Type: ApplicationFiled: July 21, 2022Publication date: October 24, 2024Applicants: JFE STEEL CORPORATION, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Daiki YAMAGISHI, Katsutoshi TAKASHIMA, Hiroshi MATSUDA, Ryoji OHASHI, Yoshitaka MURAMATSU, Takuya FUKUDA
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Patent number: 12071077Abstract: A power control unit mounting structure mounted on a vehicle includes an engine in an engine room at a front of the vehicle, an intake manifold disposed above the engine, a power control unit that is disposed above the engine, coupled to a cable, and controls power of a drive motor, and a toeboard cross member disposed on a toeboard. The engine and the toeboard cross member partly overlap in a projected plane along a fore-and-aft direction to provide a space behind the control unit in a front view of the vehicle. The intake manifold and the control unit are disposed within a contour of the engine in a plan view of the vehicle. The intake manifold is disposed ahead of the control unit, and portions of intake pipes of the intake manifold on both sides extend rearward and are partly opposed to both side surfaces of the control unit.Type: GrantFiled: March 17, 2022Date of Patent: August 27, 2024Assignee: SUBARU CORPORATIONInventors: Hiroshi Matsuda, Hisayuki Nagatsu, Kazuya Sakaimoto
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Patent number: 12063102Abstract: If reception quality of a broadcast signal of a first frequency received by a tuner satisfies setting conditions, the frequency received by the tuner is changed from the first frequency to a second frequency. It is evaluated whether or not the amount of offset between a reference frequency and the frequency of the signal, which is generated by converting the broadcast signal of the second frequency received by the tuner into an intermediate frequency is within a predetermined range. If the offset between the reference frequency and the frequency of the intermediate frequency signal is within the predetermined range, the data included in the broadcast signal of the first frequency is acquired by a demodulating the broadcast signal of the first frequency. It is evaluated whether or not the broadcast signal of the first frequency is a broadcast signal of a broadcasting station based on the acquired data.Type: GrantFiled: March 30, 2022Date of Patent: August 13, 2024Assignee: Faurecia Clarion Electronics Co., Ltd.Inventors: Hideki Ooshima, Hiroshi Matsuda, Takeshi Kunii, Akihiko Takada, Yuujirou Matsukura
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Publication number: 20240257783Abstract: An electro-optical device is provided and includes a plurality of first signal lines extending in a first direction on a substrate; a plurality of second signal lines extending in a second direction on the substrate, the second direction intersecting the first direction; a pixel area in which a plurality of pixel electrodes are disposed; an outer peripheral edge of the pixel area having a curved portion or a bent portion; and a first circuit block, a second circuit block, and a third circuit block arranged along the outer peripheral edge, wherein the second circuit block is arranged between the first circuit block and the first circuit block, and a first gap between the first circuit bock and the second circuit block is different from a second gap between the second circuit block and the third circuit block.Type: ApplicationFiled: April 11, 2024Publication date: August 1, 2024Inventors: Katsuya ANZAI, Hideki KAWADA, Hiroshi MATSUDA, Yukitada IWASAKI
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Publication number: 20240246167Abstract: An automotive member and a resistance spot welding method. The automotive member includes a resistance spot weld formed by resistance-spot-welding a plurality of steel sheets including at least one high strength steel sheet. The high strength steel sheet has a specific chemical composition. The microstructure in the vicinity of the edge of the nugget of the resistance spot weld is a composite microstructure containing ferrite at a volume fraction of 1 to 30%, martensite at a volume fraction of 1 to 50%, and tempered martensite at a volume fraction of 20% or more. The average number density of Nb-based precipitate grains having a grain diameter less than 0.09 ?m and Ti-based precipitate grains having a grain diameter less than 0.09 ?m is 10 or more grains per 100 ?m2 in a sheet cross section.Type: ApplicationFiled: March 14, 2022Publication date: July 25, 2024Applicant: JFE STEEL CORPORATIONInventors: Katsutoshi TAKASHIMA, Reiko ENDO, Lingling YANG, Hiroshi MATSUDA
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Publication number: 20240238891Abstract: A resistance spot welding method in which a high strength zinc-based coated steel sheet used in a sheet set has an equivalent carbon content of 0.20% or more and a tensile strength of 780 MPa or more. The method includes performing a first energization step such that a current value at the end of the energization, a current value Is at the start of the energization, and a thickness of the thinnest steel sheet among steel sheets overlapping each other satisfy specified relationships. The method includes performing a second energization step in which a cooling step of holding a non-energization state for 10 ms or longer and shorter than 160 ms and performing energization at a current value equal to or more than the current value at the end of the first energization step for 20 ms or longer and shorter than 200 ms are repeated.Type: ApplicationFiled: July 19, 2022Publication date: July 18, 2024Applicant: JFE STEEL CORPORATIONInventors: Nao KAWABE, Chikaumi SAWANISHI, Katsutoshi TAKASHIMA, Koichi TANIGUCHI, Hiroshi MATSUDA, Daiki YAMAGISHI
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Patent number: 12037665Abstract: A spot welded member includes a spot weld formed by holding a sheet stack of multiple steel sheets between a pair of electrodes and spot-welding the sheet stack, in which at least one of the multiple steel sheets is a high-strength zinc-based coated steel sheet having a tensile strength of 780 MPa or more, the high-strength zinc-based coated steel sheet having a coating with an Al content of 0.5% or more by mass, and in which the heat shock region of the spot weld outwardly extending from an edge of a corona bond area includes a coated layer including an FeAl alloy layer having an average thickness of 0.3 ?m or more and a zinc-based coated layer having an average thickness of 2.0 ?m or more on the FeAl alloy layer at the interface between the base steel sheet of the high-strength zinc-based coated steel sheet and the coating.Type: GrantFiled: December 19, 2019Date of Patent: July 16, 2024Assignee: JFE Steel CorporationInventors: Minoru Tanaka, Koichi Taniguchi, Rinta Sato, Katsutoshi Takashima, Hiroshi Matsuda, Rinsei Ikeda