Patents by Inventor Hiroshi Kanazawa
Hiroshi Kanazawa 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: 11965948Abstract: According to one embodiment, a medical information processing apparatus includes processing circuitry configured to derive an index value with respect to noise included in data associated with magnetic resonance signals collected by each of a plurality of reception coils, adjust a degree to which noise is removed from the data associated with the magnetic resonance signals based on the derived index value, remove noise from the data associated with the magnetic resonance signals based on the adjusted degree, and perform compositing of the data associated with the magnetic resonance signals from which noise has been removed.Type: GrantFiled: December 20, 2022Date of Patent: April 23, 2024Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Yuichi Yamashita, Kazuto Nakabayashi, Hitoshi Kanazawa, Kazuya Okamoto, Hiroshi Takai, Nobuyuki Konuma, Kensuke Shinoda
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Publication number: 20240117517Abstract: Disclosed is an Fe-based electroplated steel sheet including: a Si-containing cold-rolled steel sheet containing Si in an amount of 0.1 mass % or more and 3.0 mass % or less; and 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 of 5.0 g/m2 or more, in which in an intensity profile measured by glow discharge optical emission spectrometry, a peak of emission intensity at wavelengths indicating Si is detected within a range from a surface of the Fe-based electroplating layer to more than 0.2 ?m in a thickness direction and not more than a thickness of the Fe-based electroplating layer, and an average value of C concentration in a region ranging from 10 ?m to 20 ?m in the thickness direction from the surface of the Fe-based electroplating layer is 0.10 mass % or less.Type: ApplicationFiled: November 5, 2021Publication date: April 11, 2024Applicant: JFE STEEL CORPORATIONInventors: Shunsuke YAMAMOTO, Katsutoshi TAKASHIMA, Yusuke OKUMURA, Tomomi KANAZAWA, Katsuya HOSHINO, Takashi KAWANO, Takako YAMASHITA, Hiroshi MATSUDA, Yoichi MAKIMIZU
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Patent number: 11394257Abstract: A cogging torque in a rotary electric machine is sufficiently reduced. The rotor core includes a magnetic pole having the base formed on the outer peripheral side of the storage space. A plurality of magnetic poles are provided in the circumferential direction, and include the first protrusion protruding from the base in one circumferential direction along the outer periphery of the rotor core, and the second protrusion which is provided on the opposite side to with the base interposed and protrudes from the base along the outer periphery of the rotor core in the other circumferential direction. At least one of the first protrusion and the second protrusion is located on the outer peripheral side from the first line segment which is a virtual line connecting the end of the first protrusion and the end of the second protrusion, and is provided such that the space is provided with respect to the first line segment.Type: GrantFiled: August 3, 2018Date of Patent: July 19, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Kazutami Tago, Hiroshi Kanazawa, Kenji Nakayama, Yuji Tsuji, Takayuki Chikaoka
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Patent number: 11381124Abstract: A torque ripple in a rotary electric machine is sufficiently reduced. At least two of the plurality of laminated plates in the rotor core include a magnetic pole having the base formed on the outer peripheral side of the storage space, and a bridge part connected to the magnetic pole. A plurality of magnetic poles are provided in the circumferential direction, and the first space is formed between the bases of a pair of magnetic poles adjacent in the circumferential direction. The q-axis outer peripheral portion, which is located between the pair of circumferentially adjacent magnetic poles and is in contact with the first space, is provided on the inner peripheral side of the base. The base includes the side surface portion which is in contact with the first space, and the protrusion which is provided on the outer peripheral side of the side surface portion and protrudes in the circumferential direction with respect to the side surface portion.Type: GrantFiled: July 30, 2018Date of Patent: July 5, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Kazutami Tago, Hiroshi Kanazawa, Kenji Nakayama, Yuji Tsuji, Takayuki Chikaoka
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Patent number: 11292508Abstract: There is provided a novel electric power steering device capable of continuing a steering assist function as much as possible even in an environment where moisture enters inside a housing of an electric motor due to breakage of a rubber boot and an electrical short circuit phenomenon occurs. A stator 14 around which a winding is wound is vertically divided into two areas in the direction of gravity, a winding 16 of one system is wound in the upper stator area of the stator 14 while the winding 16 of the other system is wound in the lower stator area of the stator 14, and power of the winding of one system is controlled by an electronic control means 33 of one system while power of the winding of the other system is controlled by an electronic control means 34 of the other system.Type: GrantFiled: January 17, 2018Date of Patent: April 5, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Kenji Nakayama, Hiroshi Kanazawa
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Patent number: 10840761Abstract: A stator includes: a stator core that includes a plurality of slots; a stator coil that is formed by connecting a plurality of segment conductors to each other; and an insulating member that has insulating properties, in which the segment conductor includes a slot portion and an inclined portion, the slot portion is disposed inside the slot, the inclined portion is disposed outside the slot to be inclined from the slot portion, the insulating member is mounted on the stator core and includes a first insulating portion and a plurality of second insulating portions, the first insulating portion is disposed next to the slot portion, the second insulating portions extend from the first insulating portion in an axial direction and are provided along a radial direction of the stator core, and the second insulating portions insulate adjacent segment conductors in an coil end from each other.Type: GrantFiled: October 24, 2016Date of Patent: November 17, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS ENGINEERING, LTD.Inventors: Takashi Ishigami, Hiroshi Kanazawa, Kenji Nakayama
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Publication number: 20200287430Abstract: A cogging torque in a rotary electric machine is sufficiently reduced. The rotor core includes a magnetic pole having the base formed on the outer peripheral side of the storage space. A plurality of magnetic poles are provided in the circumferential direction, and include the first protrusion protruding from the base in one circumferential direction along the outer periphery of the rotor core, and the second protrusion which is provided on the opposite side to with the base interposed and protrudes from the base along the outer periphery of the rotor core in the other circumferential direction. At least one of the first protrusion and the second protrusion is located on the outer peripheral side from the first line segment which is a virtual line connecting the end of the first protrusion and the end of the second protrusion, and is provided such that the space is provided with respect to the first line segment.Type: ApplicationFiled: August 3, 2018Publication date: September 10, 2020Inventors: Kazutami TAGO, Hiroshi KANAZAWA, Kenji NAKAYAMA, Yuji TSUJI, Takayuki CHIKAOKA
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Publication number: 20200266677Abstract: A torque ripple in a rotary electric machine is sufficiently reduced. At least two of the plurality of laminated plates in the rotor core include a magnetic pole having the base formed on the outer peripheral side of the storage space, and a bridge part connected to the magnetic pole. A plurality of magnetic poles are provided in the circumferential direction, and the first space is formed between the bases of a pair of magnetic poles adjacent in the circumferential direction. The q-axis outer peripheral portion, which is located between the pair of circumferentially adjacent magnetic poles and is in contact with the first space, is provided on the inner peripheral side of the base. The base includes the side surface portion which is in contact with the first space, and the protrusion which is provided on the outer peripheral side of the side surface portion and protrudes in the circumferential direction with respect to the side surface portion.Type: ApplicationFiled: July 30, 2018Publication date: August 20, 2020Inventors: Kazutami TAGO, Hiroshi KANAZAWA, Kenji NAKAYAMA, Yuji TSUJI, Takayuki CHIKAOKA
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Publication number: 20200039578Abstract: There is provided a novel electric power steering device capable of continuing a steering assist function as much as possible even in an environment where moisture enters inside a housing of an electric motor due to breakage of a rubber boot and an electrical short circuit phenomenon occurs. A stator 14 around which a winding is wound is vertically divided into two areas in the direction of gravity, a winding 16 of one system is wound in the upper stator area of the stator 14 while the winding 16 of the other system is wound in the lower stator area of the stator 14, and power of the winding of one system is controlled by an electronic control means 33 of one system while power of the winding of the other system is controlled by an electronic control means 34 of the other system.Type: ApplicationFiled: January 17, 2018Publication date: February 6, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Kenji NAKAYAMA, Hiroshi KANAZAWA
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Patent number: 10447184Abstract: Provided is a rotating electrical machine in which torque ripple can be decreased at the time of one-side electrical current supply. A motor includes a stator coil constituted by concentrated windings arranged to teeth where an integer N?2. The stator coil includes first and second winding units and each of which is constituted by windings and which are independent from each other, the windings constituting the first winding unit are arranged in three teeth groups, each of which includes adjacent teeth and which are provided at 120-degree pitches in terms of mechanical angle, and the windings constituting the second winding unit are arranged in teeth which are the teeth not included in the three teeth groups. That is, the windings constituting the second winding unit are also arranged in three teeth groups, which are provided at 120-degree pitches in terms of mechanical angle.Type: GrantFiled: November 18, 2016Date of Patent: October 15, 2019Assignee: Hitachi Automotive Systems Engineering, Ltd.Inventors: Hiroshi Kanazawa, Kenji Nakayama, Hideyuki Hara
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Publication number: 20190131840Abstract: An object of the invention is to provide a concentrated winding brushless motor of a permanent magnet type, in which a lead wire and a jumper wire to a tooth far away from the adjacent tooth are disposed at the ends of coils on an axially reverse side in order to make a manufacturing work of coils efficient.Type: ApplicationFiled: March 27, 2017Publication date: May 2, 2019Inventors: Kazutami TAGO, Hiroshi KANAZAWA, Hideki KITAMURA, Kenji NAKAYAMA
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Publication number: 20190027989Abstract: A stator includes: a stator core that includes a plurality of slots; a stator coil that is formed by connecting a plurality of segment conductors to each other; and an insulating member that has insulating properties, in which the segment conductor includes a slot portion and an inclined portion, the slot portion is disposed inside the slot, the inclined portion is disposed outside the slot to be inclined from the slot portion, the insulating member is mounted on the stator core and includes a first insulating portion and a plurality of second insulating portions, the first insulating portion is disposed next to the slot portion, the second insulating portions extend from the first insulating portion in an axial direction and are provided along a radial direction of the stator core, and the second insulating portions insulate adjacent segment conductors in an coil end from each other.Type: ApplicationFiled: October 24, 2016Publication date: January 24, 2019Inventors: Takashi ISHIGAMI, Hiroshi KANAZAWA, Kenji NAKAYAMA
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Publication number: 20190013710Abstract: Provided is a rotary electric machine in which lengths of routing portions of coil terminals are made uniform and a coil terminal portion is downsized. A rotary electric machine includes a rotor and a stator, the stator including teeth each wound with a coil, in which the coil consists of a first coil set and a second coil set, each of the first coil set and the second coil set is continuously wound around the two teeth, and includes a first coil terminal, and a second coil terminal to which a routing portion is formed, the first coil terminal of each of the first coil set and the second coil set is directly connected to the second coil terminal of another of the first coil set and the second coil set, the first coil terminal and the second coil terminal of each of the first coil set and the second coil set are arranged on an identical coil end, and the second coil terminal of each of the first coil set and the second coil set is arranged not to cross any other coil terminal in an axial direction.Type: ApplicationFiled: December 2, 2016Publication date: January 10, 2019Inventors: Shozo KAWASAKI, Hiroshi KANAZAWA, Yasunaga HAMADA, Kenji NAKAYAMA, Koichi KASHIWA, Masahiro HOSOYA
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Publication number: 20180367006Abstract: The present invention provides a novel electric motor that allows improvement in the electrical insulation performance of the winding wire on the innermost peripheral side between adjacent teeth. A winding wire is wound in three layers around a tooth. The winding wire in a first winding layer is wound from a core back to a collar portion, and the winding wire in a second winding layer is wound from the collar portion to the core back. The start end of the winding wire in the first winding layer wound around a tooth is arranged on the core back side of the second winding layer. The terminal end and its vicinity of the winding wire in the first winding layer is arranged on the collar portion side of the first winding layer to leave a second winding layer start end arrangement space where the start end of the winding wire in the second winding layer is to be arranged.Type: ApplicationFiled: November 18, 2016Publication date: December 20, 2018Inventors: Akira FUJIWARA, Kenji NAKAYAMA, Shozo KAWASAKI, Hiroshi KANAZAWA, Masahiro HOSOYA
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Publication number: 20180351482Abstract: Provided is a rotating electrical machine in which torque ripple can be decreased at the time of one-side electrical current supply. A motor includes a stator coil constituted by concentrated windings arranged to teeth where an integer N?2. The stator coil includes first and second winding units and each of which is constituted by windings and which are independent from each other, the windings constituting the first winding unit are arranged in three teeth groups, each of which includes adjacent teeth and which are provided at 120-degree pitches in terms of mechanical angle, and the windings constituting the second winding unit are arranged in teeth which are the teeth not included in the three teeth groups. That is, the windings constituting the second winding unit are also arranged in three teeth groups, which are provided at 120-degree pitches in terms of mechanical angle.Type: ApplicationFiled: November 18, 2016Publication date: December 6, 2018Inventors: Hiroshi KANAZAWA, Kenji NAKAYAMA, Hideyuki HARA
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Patent number: 10069362Abstract: In a rotating electrical machine, in the case where a cylindrical component is fixed by press fitting or the like, the opening edge of the cylindrical component is widened toward the end to provide peeps for facilitating the insertion of the cylindrical component. However, the outer shape of a rotor expands due to the peeps, and a gap needs to be provided between the rotor and a stator in consideration of the expanded portion of the outer shape, which causes the degradation of the performance of the rotating electrical machine. In addition, in the case where magnets are fixed only by the tightening force of a magnet cover, the greater the centrifugal force becomes, the larger the clamping margin becomes and similarly the larger the peeps become, and thus the expanded portion also becomes larger. However, if the opening edge is not widened to the end, the absence of the peeps makes it difficult to insert the magnet cover.Type: GrantFiled: March 10, 2014Date of Patent: September 4, 2018Assignee: Hitachi Automotive Systems, Ltd.Inventors: Shozo Kawasaki, Hiroshi Kanazawa, Koichi Kashiwa, Kenji Nakayama, Yasunaga Hamada
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Publication number: 20160141930Abstract: A rotor for an electric power steering motor is configured to include a rotor core having a step skew structure constituted of two independent cores as well as to use shrink fitting to fasten the two cores to a shaft. It may also be configured such that a magnetic center of the rotor core is adjusted by controlling a dimension thereof from a tip of the shaft and by shrink fitting the two cores.Type: ApplicationFiled: October 15, 2015Publication date: May 19, 2016Inventors: Hiroshi KANAZAWA, Shozo KAWASAKI, Kenji NAKAYAMA, Yasunaga HAMADA, Koichi KASHIWA, Masahiro HOSOYA
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Publication number: 20160126793Abstract: In a rotating electrical machine, in the case where a cylindrical component is fixed by press fitting or the like, the opening edge of the cylindrical component is widened toward the end to provide peeps for facilitating the insertion of the cylindrical component. However, the outer shape of a rotor expands due to the peeps, and a gap needs to be provided between the rotor and a stator in consideration of the expanded portion of the outer shape, which causes the degradation of the performance of the rotating electrical machine. In addition, in the case where magnets are fixed only by the tightening force of a magnet cover, the greater the centrifugal force becomes, the larger the clamping margin becomes and similarly the larger the peeps become, and thus the expanded portion also becomes larger. However, if the opening edge is not widened to the end, the absence of the peeps makes it difficult to insert the magnet cover.Type: ApplicationFiled: March 10, 2014Publication date: May 5, 2016Inventors: Shozo KAWASAKI, Hiroshi KANAZAWA, Koichi KASHIWA, Kenji NAKAYAMA, Yasunaga HAMADA
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Patent number: 9281724Abstract: In a rotating electrical machine, the concentrated winding coil includes a single-layer coil, corresponding to one layer, wound in a first turn advancing mode with the wire forming sequential coil turns starting from one end of the insulating bobbin toward another end of the insulating bobbin and another single-layer coil, corresponding to one layer, wound in a second turn advancing mode with the wire forming turns starting from the other end of the insulating bobbin toward the one end of the insulating bobbin, with the single-layer coil and the other single-layer coil layered alternately to each other. The insulating bobbin includes a winding portion where the concentrated winding coil is formed, collars each formed at one of two ends of the winding portion and at least one projecting portion configured to disallow misalignment at a turn changeover start area in the first and second turn advancing modes.Type: GrantFiled: July 25, 2013Date of Patent: March 8, 2016Assignee: Hitachi Automotive Systems, Ltd.Inventors: Takashi Ishigami, Kenji Nakayama, Hiroshi Kanazawa
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Patent number: 9053732Abstract: A method of forming a perpendicular magnetic recording medium. The perpendicular magnetic recording medium comprises a substrate, an underlayer on the substrate, an intermediate layer on the underlayer and a recording layer on the intermediate layer. The underlayer comprises a first soft underlayer, an antiferromagnetically coupled Ru layer on the first soft underlayer, a second soft underlayer on the antiferromagnetically coupled Ru layer, and an orientation control layer on the second soft underlayer, the method comprises applying a negative bias voltage to the substrate during formation of the underlayer.Type: GrantFiled: January 6, 2012Date of Patent: June 9, 2015Assignee: Showa Denko HD Singapore Pte Ltd.Inventors: Amarendra Kumar Singh, Shun Matsumoto, Xiao Dong Chen, Hiroshi Kanazawa