Patents by Inventor Satoshi Muramatsu
Satoshi Muramatsu 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: 20210225590Abstract: An electronic component includes a multilayer body including inner electrodes and dielectric layers alternately stacked, and an outer electrode electrically connected to the inner electrodes. The multilayer body includes first and second main surfaces opposite to each other in a stacking direction, first and second side surfaces opposite to each other in a width direction, and first and second end surfaces opposite to each other in a length direction. The outer electrode includes first outer electrodes disposed on the first and second end surfaces, and at least one second outer electrode disposed on at least one of the first and second side surfaces. The at least one second outer electrode is directly connected to the inner electrodes at positions spaced away from the at least one of the first or second side surface toward the inside of the multilayer body.Type: ApplicationFiled: April 5, 2021Publication date: July 22, 2021Inventors: Satoshi MURAMATSU, Masatoshi YANAGIHARA, Akitaka DOI
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Publication number: 20210183570Abstract: A multilayer ceramic capacitor includes: a laminate including dielectric layers and internal electrode layers; and external electrodes on the main surfaces of the laminate. The laminate further includes a first via conductor, a second via conductor, a third via conductor, and a fourth via conductor that connect the internal electrode layers and the external electrodes. The external electrodes include first external electrodes, second external electrodes, third external electrodes, and fourth external electrodes, each connected to the respective end surfaces of the via conductor. Each of the external electrodes does not extend to the side surfaces of the laminate. A ratio W/L of a dimension W in the width direction of the multilayer ceramic capacitor to a dimension L in the length direction of the multilayer ceramic capacitor is about 0.85 or more and about 1 or less. The dimension L in the length direction of the multilayer ceramic capacitor is about 750 ?m or smaller.Type: ApplicationFiled: December 11, 2020Publication date: June 17, 2021Inventors: Suguru NAKANO, Satoshi MURAMATSU, Risa HOJO, Yoshiyuki NOMURA
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Publication number: 20210183581Abstract: A multilayer ceramic capacitor includes a laminate including dielectric layers and internal electrode layers, and external electrodes on surfaces of the laminate. A silane coupling agent layer is on at least a mounting surface among surfaces of the laminate. The silane coupling agent layer is made of a fluorine-based silane coupling agent, and a silane coupling agent concentration on the mounting surface is about 0.1 or higher and about 365 or lower and is higher than a silane coupling agent concentration on a counter surface opposing the mounting surface, or the silane coupling agent layer is made of a carbon-based silane coupling agent, and a silane coupling agent concentration on the mounting surface is about 0.91 or higher and about 38.10 or lower and is higher than a silane coupling agent concentration on a counter surface opposing the mounting surface.Type: ApplicationFiled: December 11, 2020Publication date: June 17, 2021Inventors: Suguru NAKANO, Satoshi MURAMATSU, Risa HOJO, Yoshiyuki NOMURA
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Patent number: 10930438Abstract: A multilayer ceramic capacitor includes a laminate including dielectric layers and internal electrodes that are laminated, and external electrodes disposed on side surfaces of the laminate to be connected to corresponding internal electrodes. A dimension L of the multilayer ceramic capacitor in its lengthwise direction and a dimension W in its width direction satisfy: about 0.85?W/L?about 1, and L?about 750 ?m, and a dimension T in its lamination direction satisfies: about 70 ?m?T?about 110 ?m. The laminate has a dimension t in the lamination direction, and a region in which the internal electrodes are laminated has a dimension t? in the lamination direction, and a ratio of the dimensions satisfies: t?/t?about 0.55.Type: GrantFiled: July 23, 2018Date of Patent: February 23, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Satoshi Muramatsu, Yuki Koyama
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Publication number: 20200312565Abstract: A multilayer ceramic capacitor includes a capacitive element including ceramic layers and internal electrodes, and external electrodes on the capacitive element. The external electrodes include a Ni underlying electrode layer mainly made of Ni, a Cu plating electrode layer, and at least one second plating electrode layer. The Cu plating electrode layer includes a Ni diffused Cu plating electrode layer on a side closer to the Ni underlying electrode layer and including Ni diffused therein and a non-Ni diffused Cu plating electrode layer on a side closer to the second plating electrode layer and not including Ni diffused therein. The Cu plating electrode layer has a thickness of about 3 ?m or more and about 12 ?m or less and the non-Ni diffused Cu plating electrode layer has a thickness of about 0.5 ?m or more.Type: ApplicationFiled: February 12, 2020Publication date: October 1, 2020Inventors: Taisuke KANZAKI, Satoshi MURAMATSU, Kosuke ONISHI
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Publication number: 20200312560Abstract: A three-terminal multilayer ceramic capacitor includes a capacitor including a ceramic layer, first and second internal electrodes, first and second end surface electrodes, and first and second side surface electrodes, and has a lengthwise dimension of about 1300 ?m or more and about 1500 ?m or less, a widthwise dimension of about 1000 ?m or more and about 1200 ?m or less, a heightwise dimension of about 570 ?m or more and about 680 ?m or less, and a capacitance of about 12 ?F or more and about 32 ?F or less. The first and second end surface electrodes, and the first and second side surface electrodes include a Ni underlying electrode layer and at least one plating electrode layer. The first and second end surface electrodes have a thickness of about 0.73% or more and about 3.00% or less relative to the lengthwise dimension.Type: ApplicationFiled: February 12, 2020Publication date: October 1, 2020Inventors: Kosuke ONISHI, Satoshi MURAMATSU, Taisuke KANZAKI
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Publication number: 20200312564Abstract: A multilayer ceramic capacitor includes a capacitive element including a stack of ceramic layers and internal electrodes, and external electrodes on a surface of the capacitive element. Each of the external electrodes includes a base electrode layer on the surface of the capacitive element and a Cu-plated electrode layer on a surface of the base electrode layer and including an edge portion facing the surface of the capacitive element. Sn is provided between the edge portion of the Cu-plated electrode layer and the surface of the capacitive element. On a surface of the Cu-plated electrode layer, at least one second plated electrode layer including an edge portion facing the surface of the capacitive element is provided.Type: ApplicationFiled: March 26, 2020Publication date: October 1, 2020Inventors: Kosuke ONISHI, Satoshi MURAMATSU, Taisuke KANZAKI
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Publication number: 20200284255Abstract: A pump device includes: a drive shaft; a pump element; a pump housing including; a pump element receiving space, first and second bearing receiving spaces, a suction passage, a discharge passage, a return passage, and a seal receiving space, a first bearing including a first lubrication groove, received within the first bearing receiving space, and supporting the drive shaft; a second bearing which includes a second lubrication groove having a sectional area that is perpendicular to the rotation axis, and that is greater than a sectional area of the first bearing that is perpendicular to the rotation axis, which is received within the second bearing receiving space, and which supports the drive shaft; and a seal member provided within the seal receiving space, and arranged to seal between the drive shaft and the pump housing.Type: ApplicationFiled: August 22, 2018Publication date: September 10, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Tomohiko NAKAZONO, Yukio UCHIDA, Satoshi MURAMATSU
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Publication number: 20200234883Abstract: A multilayer ceramic capacitor includes a stacked body and external electrodes. The stacked body includes stacked dielectric layers and internal electrodes. The external electrodes are disposed on lateral surfaces of the stacked body and are connected to the internal electrodes. A ratio of min to max is not less than about 36% and not more than about 90%, where A1, A2, A3, and A4 respectively denote the surface areas of first, second, third, and fourth external electrodes that are located on the first or second main surface of the stacked body.Type: ApplicationFiled: January 21, 2020Publication date: July 23, 2020Inventor: Satoshi MURAMATSU
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Publication number: 20200234887Abstract: A multilayer ceramic capacitor includes a stacked body and external electrodes. The stacked body includes stacked dielectric layers and internal electrodes. The external electrodes are disposed on lateral surfaces of the stacked body and are connected to the internal electrodes. The dielectric layers include outer layer portions and an effective layer portion. Each outer layer portion is adjacent to a corresponding main surface of the stacked body. Each outer layer portion is a dielectric layer located between a corresponding main surface and an internal electrode closest to the main surface. A ratio of a dimension of the effective layer portion in a stacking direction to a dimension of the stacked body in the stacking direction is not less than about 53% and not more than about 83%.Type: ApplicationFiled: January 21, 2020Publication date: July 23, 2020Inventor: Satoshi MURAMATSU
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Publication number: 20200118747Abstract: An electronic component includes a multilayer body including inner electrodes and dielectric layers alternately stacked, and an outer electrode electrically connected to the inner electrodes. The multilayer body includes first and second main surfaces opposite to each other in a stacking direction, first and second side surfaces opposite to each other in a width direction, and first and second end surfaces opposite to each other in a length direction. The outer electrode includes first outer electrodes disposed on the first and second end surfaces, and at least one second outer electrode disposed on at least one of the first and second side surfaces. The at least one second outer electrode is directly connected to the inner electrodes at positions spaced away from the at least one of the first or second side surface toward the inside of the multilayer body.Type: ApplicationFiled: October 7, 2019Publication date: April 16, 2020Applicant: Murata Manufacturing Co., Ltd.Inventors: Satoshi MURAMATSU, Masatoshi YANAGIHARA, Akitaka DOI
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Patent number: 10534291Abstract: An image forming system includes an image carrier to rotate, a developer carrier to rotate, a container to contain the developer carrier, and a developer retainer separated from the rotatable developer carrier by a first gap of closest proximity, separated from the rotatable image carrier by a second gap of closest proximity, and separated from the container by a third gap of closest proximity. The first gap is less than the second gap and the third gap.Type: GrantFiled: December 18, 2018Date of Patent: January 14, 2020Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Naoya Iwata, Satoshi Muramatsu, Tadao Mori
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Publication number: 20190129332Abstract: An image forming system includes an image carrier to rotate, a developer carrier to rotate, a container to contain the developer carrier, and a developer retainer separated from the rotatable developer carrier by a first gap of closest proximity, separated from the rotatable image carrier by a second gap of closest proximity, and separated from the container by a third gap of closest proximity. The first gap is less than the second gap and the third gap.Type: ApplicationFiled: December 18, 2018Publication date: May 2, 2019Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Satoshi MURAMATSU, Tadao Mori
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Publication number: 20190027312Abstract: A multilayer ceramic capacitor includes a laminate including dielectric layers and internal electrodes that are laminated, and external electrodes disposed on side surfaces of the laminate to be connected to corresponding internal electrodes. A dimension L of the multilayer ceramic capacitor in its lengthwise direction and a dimension W in its width direction satisfy: about 0.85?W/L?about 1, and L?about 750 ?m, and a dimension T in its lamination direction satisfies: about 70 ?m?T?about 110 ?m. The laminate has a dimension t in the lamination direction, and a region in which the internal electrodes are laminated has a dimension t? in the lamination direction, and a ratio of the dimensions satisfies: t?/t?about 0.55.Type: ApplicationFiled: July 23, 2018Publication date: January 24, 2019Inventors: Satoshi MURAMATSU, Yuki KOYAMA
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Patent number: 10014110Abstract: A multilayer ceramic capacitor includes an external electrode that is unlikely to be peeled. First and second external electrodes each include base layers provided over a ceramic body and including a metal and glass, and Cu plated layers provided over the base layers. The multilayer ceramic capacitor includes a reactive layer. The reactive layer contains about 5 atomic % to about 15 atomic % of Ti, about 5 atomic % to about 15 atomic % of Si, and about 2 atomic % to about 10 atomic % of V.Type: GrantFiled: March 2, 2017Date of Patent: July 3, 2018Assignee: Murata Manufacturing Co., Ltd.Inventors: Yasuhiro Nishisaka, Takehisa Sasabayashi, Satoshi Muramatsu
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Patent number: 9863417Abstract: A variable displacement vane pump is provided. This pump includes a pump housing including, a driving shaft, a rotor, a plurality of vanes, a cam support surface, a cam ring, an intake port formed at the pump housing, a discharge port formed at the pump housing, and a cam ring control mechanism disposed at the pump housing and configured to control an eccentric amount of the cam ring with respect to the rotor. The cam support surface is formed in such a manner that a shortest distance between the cam support surface and a reference line decreases from a second confining region side toward a first confining region side, and the cam ring is formed in such a manner that a cam profile radius change rate decreases first and then increases again on the second confining region side when eccentric amount of the cam ring is maximized.Type: GrantFiled: September 17, 2014Date of Patent: January 9, 2018Assignee: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.Inventors: Norikazu Kumasaka, Masaaki Iijima, Yukio Uchida, Satoshi Muramatsu
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Patent number: 9828991Abstract: A variable displacement vane pump includes a notch portion which is a flow path provided to extend from an initiating end of a discharge port towards a terminating end side of a suction port. The notch portion is formed so that a sectional area of the flow path is smaller than a sectional area of the discharge port at the initiating end thereof and that a length of the flow path in a circumferential direction is 1.5 pitches or larger. The terminating end of the suction port is a point where the vane in the suction area last overlaps the suction port. The initiating end of the discharge port is a point where the vane departed from the suction area first overlaps the discharge port. One pitch is a distance defied in the circumferential direction between adjacent vanes of the plurality of vanes.Type: GrantFiled: March 17, 2015Date of Patent: November 28, 2017Assignee: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.Inventors: Satoshi Muramatsu, Yutaka Ogiwara, Masaaki Aoki, Norikazu Kumasaka, Yoshiaki Kido
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Publication number: 20170276132Abstract: An object of the present invention is to provide a variable displacement vane pump capable of further reducing a pulse pressure. A vane pump (1) includes a cam ring (33). The cam ring (33) is annularly formed, and defines a plurality of pump chambers (38) on an inner peripheral side thereof in cooperation with a rotor (31) and vanes (32).Type: ApplicationFiled: March 13, 2017Publication date: September 28, 2017Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Satoshi MURAMATSU, Jun SOEDA
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Patent number: 9714657Abstract: A variable displacement vane pump and a power steering can secure a discharge flow rate when a steering wheel is turned, and restrict the discharge flow rate when the steering wheel is not turned. In the variable displacement vane pump and power steering system, a bypass line is formed. The bypass line causes a hydraulic fluid in a high pressure chamber of a control valve, which controls an eccentricity of a cam ring, to flow directly to a low pressure chamber side of the control valve. The hydraulic fluid flows directly to the low pressure chamber side of the control valve when the steering wheel is turned.Type: GrantFiled: February 19, 2014Date of Patent: July 25, 2017Assignee: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.Inventors: Yukio Uchida, Hiroki Imanaga, Satoshi Muramatsu
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Publication number: 20170178809Abstract: A multilayer ceramic capacitor includes an external electrode that is unlikely to be peeled. First and second external electrodes each include base layers provided over a ceramic body and including a metal and glass, and Cu plated layers provided over the base layers. The multilayer ceramic capacitor includes a reactive layer. The reactive layer contains about 5 atomic % to about 15 atomic % of Ti, about 5 atomic % to about 15 atomic % of Si, and about 2 atomic % to about 10 atomic % of V.Type: ApplicationFiled: March 2, 2017Publication date: June 22, 2017Inventors: Yasuhiro NISHISAKA, Takehisa SASABAYASHI, Satoshi MURAMATSU