Patents Assigned to Sumida Corporation
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Patent number: 10777347Abstract: A magnetic element including: a core including magnetic powders of volume occupancy within the range of 60-volume % to 80-volume % with respect to the whole volume, including a binder resin of volume occupancy of 12-volume % or more with respect to the whole volume and further including vacancy of volume occupancy of 8-volume % or more with respect to the whole volume; and a coil which is formed by winding a conductive wire and concurrently, which is buried into the core.Type: GrantFiled: December 27, 2017Date of Patent: September 15, 2020Assignee: SUMIDA CORPORATIONInventors: Akihiko Nakamura, Mitsugu Kawarai
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Patent number: 10748705Abstract: A magnetic element, comprising: a coil having two terminal-ends, a core pressed and molded around the coil, and two terminal units connecting to the two terminal-ends of the coil, wherein a first concave portions is formed on a side surface of the core, a second concave portion for accommodating one of the two terminal-ends of the coil, is formed at a upper boundary of the first concave portion, and a third concave portion for accommodating one of the two terminal units, is formed at a upper boundary of the first concave portion and near the second concave portion.Type: GrantFiled: October 2, 2018Date of Patent: August 18, 2020Assignee: SUMIDA CORPORATIONInventor: Satoru Yamada
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Patent number: 10739132Abstract: A flatness detection method is provided for detecting component tilt regardless of measurement conditions. The flatness detection method is based on data of an electronic component captured by a 3D camera and is realized by acquiring position information and height information of a plurality of reference points of the electronic component, creating a virtual plane based on the position and the height information of at least three of the plurality of reference points, determining, based on the height information that takes, as a reference, the virtual plane of the reference points excluding selected points from the reference points, whether the virtual plane is a valid plane or an invalid plane, and detecting flatness of the component by taking the valid plane as a reference.Type: GrantFiled: March 11, 2019Date of Patent: August 11, 2020Assignee: SUMIDA CORPORATIONInventors: Junji Morita, Daichi Gemba
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Patent number: 10693222Abstract: A method of manufacturing an antenna including: forming an integrated assembly that is configured with a core, a bobbin disposed around the core and having a flange, and a coil disposed around the bobbin; supplying a liquid filler material into an inner space of a case, the case having an opening; inserting the integrated assembly into the inner space of the case via the opening before or after the supplying of the liquid filler material; closing the opening with the flange; concentrating the liquid filler material toward the flange in the inner space; curing the liquid filler material after the concentrating so as to form a cured filler material; and fixedly supporting the integrated assembly within the case via the cured filler material at a position directly adjacent to the opening of the case.Type: GrantFiled: July 30, 2018Date of Patent: June 23, 2020Assignee: SUMIDA CORPORATIONInventors: Kei Tanaka, Shuichi Kikuchi, Takanobu Rokuka
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Patent number: 10665944Abstract: An antenna device includes a core, a bobbin member having a partition, and a coil provided around the bobbin member. The coil is configured with a tight winding portion and a loose winding portion. The tight winding portion is provided between one bobbin side and the partition. The loose winding portion is provided between the other bobbin side and the partition. The loose winding portion is configured with a first winding layer and a second winding layer. A wire winding direction of the first winding layer is opposite to a wire winding direction of the second winding layer so that the wire of the first winding layer and the wire of the second winding layer cross and overlap to each other along part of the bobbin member.Type: GrantFiled: December 12, 2018Date of Patent: May 26, 2020Assignee: SUMIDA CORPORATIONInventors: Kei Tanaka, Shuichi Kikuchi, Takanobu Rokuka
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Patent number: 10643786Abstract: A coil component includes an edgewise coil and a bobbin around which the edgewise coil is wound. The bobbin includes a tubular bobbin body, and plural position-limiting protruding portions arranged in plural portions on the outer peripheral surface of the bobbin body and limit the position of each winding portion of the edgewise coil in the axial direction of the bobbin body. The plural position-limiting protruding portions include first and second position-limiting protruding portions, which are disposed at different positions in the axial direction of the bobbin body. The edgewise coil includes a first winding portion that is in pressure contact with the first position-limiting protruding portion toward the second position-limiting protruding portion, and a second winding portion that is in pressure contact with the second position-limiting protruding portion toward the first position-limiting protruding portion.Type: GrantFiled: December 13, 2017Date of Patent: May 5, 2020Assignee: SUMIDA CORPORATIONInventor: Hiroyuki Miyazaki
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Patent number: 10622133Abstract: A coil component includes a core; and a coil wound around the core, in which the core is configured to include plural split cores arranged linearly alongside each other in an axial-center direction of the coil, and an intervening layer made out of a non-magnetic material (for example, comprised of an insulating coating) is disposed between split cores adjacent to each other of the plural split cores.Type: GrantFiled: January 4, 2018Date of Patent: April 14, 2020Assignee: SUMIDA CORPORATIONInventor: Hiroyuki Miyazaki
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Patent number: 10617006Abstract: Provided are a small electronic component including: a magnetic core including at least a columnar core part; a winding coil arranged so as to surround an outer peripheral surface side of the columnar core part and formed by winding a winding wire; and a magnetic cover part formed so as to cover at least part of the magnetic core and the winding coil while following at least part of shapes of the magnetic core and the winding coil through use of a magnetic material containing a mixture of a phosphoric acid ester-based surfactant, magnetic powder, and a resin, an electronic circuit board using the small electronic component, and a method of manufacturing a small electronic component.Type: GrantFiled: July 13, 2016Date of Patent: April 7, 2020Assignee: SUMIDA CORPORATIONInventors: Fumio Uchikoba, Tsutomu Otsuka, Mitsugu Kawarai, Motomi Takahashi
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Patent number: 10601196Abstract: A slit having a predetermined width and a predetermined length is formed in a longitudinal direction from a middle of a distal edge of a tip of a flat wire. Next, one of a left strip and a right strip is brought upward and the other is brought downward, and then the left strip and the right strip vertically separated are laterally brought close to each other. Finally, the left strip and the right strip are vertically pressed to abut against each other.Type: GrantFiled: January 16, 2019Date of Patent: March 24, 2020Assignee: SUMIDA CORPORATIONInventors: Tomoaki Asari, Tomoyuki Kaneko
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Patent number: 10529485Abstract: A method for manufacturing an electronic component is provided. The method includes placing a T-shaped core and an air-core coil in a mold, placing a mixture of a metal magnetic material and a thermosetting resin into the mold so as to embed the T-shaped core and the air-core coil in the mixture, applying pressure in a range of 0.1 to 20.0 kg/cm2 to the placed mixture so that a shape of the placed mixture conforms to the T-shaped core, the air-core coil, and the mold, and, after applying the pressure, heating the mixture at a predetermined temperature for a predetermined time so that the placed mixture is hardened.Type: GrantFiled: August 20, 2019Date of Patent: January 7, 2020Assignee: SUMIDA CORPORATIONInventors: Shinichi Sakamoto, Douglas James Malcolm
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Patent number: 10504642Abstract: A filter component assembly kit includes a bobbin that is configured with first and second members and a core that is in a quadrangular frame shape. When the first member is assembled with the second member, a through hole is formed in the bobbin. The through hole extends in a first direction. The core is configured with first and second extension bars. The first and second extension bars extend in parallel in the first direction. When the first extension bar is disposed in the through hole of the bobbin, rotation of the core around the first extension bar is prevented. First allowance of the first extension bar in a second direction, which is perpendicular to the first direction, in the through hole is larger than second allowance of the first extension bar in a third direction, which is perpendicular to the first and second directions, in the through hole.Type: GrantFiled: January 3, 2018Date of Patent: December 10, 2019Assignee: SUMIDA CORPORATIONInventors: Naoki Sasaki, Jiayu Chen
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Patent number: 10483646Abstract: An antenna device includes a core, a terminal mounting unit, a coil, a plurality of elongated terminals, and an electronic component provided on the terminal mounting unit. The core is formed from a magnetic material. The terminal mounting unit is arranged adjacent to one side of the core. The coil, which is a wound conductive wire, is arranged on an outer circumference of the core. A sidewall of the terminal mounting unit includes a plurality of through holes into which the elongated terminals are inserted.Type: GrantFiled: July 27, 2017Date of Patent: November 19, 2019Assignee: SUMIDA CORPORATIONInventors: Kei Tanaka, Takanobu Rokuka, Hitoshi Moriya, Shigeru Mahara, Noriaki Iwasaki, Masakazu Fukuoka, Yoshinori Miura
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Patent number: 10447281Abstract: A phase adjusting circuit is provided that can highly precisely adjust frequencies throughout the entire frequency range to be dealt with. A PLL circuit includes: a reference-signal input terminal from which a reference signal is input; a feedback-signal input terminal from which a feedback signal is input; and an output terminal from which an output signal based on a phase difference between the reference signal and the feedback signal is output. A filter circuit is connected to the reference-signal input terminal and the output terminal, and causes a phase of the reference signal to be delayed when the oscillation frequency of an inverter circuit including the PLL circuit falls in a high range. A delay circuit is connected to the output terminal, and causes the output signal to be delayed when the oscillation frequency of the inverter circuit falls in a low range lower than the high range.Type: GrantFiled: February 6, 2018Date of Patent: October 15, 2019Assignee: SUMIDA CORPORATIONInventor: Hiroyuki Miyazaki
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Patent number: 10446313Abstract: An electronic component includes; a magnetic-body core having a plate-shaped portion and a core portion which extends from an upper surface of the plate-shaped portion; a winding wire which includes a wound portion wound by a rectangular wire into an Edgewise winding form and two non-wound portions extending from the wound portion to two distal ends, and the core portion is inserted through the wound portion; and a magnetic exterior body which covers at least the wound portion and the core portion. The two non-wound portions are respectively arranged along a bottom surface and at least one of the side surfaces of the plate-shaped portion. Parts of the two non-wound portions arranged along the bottom surface are electrodes.Type: GrantFiled: April 17, 2017Date of Patent: October 15, 2019Assignee: SUMIDA CORPORATIONInventors: Mitsugu Kawarai, Satoru Yamada, Kazuyuki Kikuchi, Tomohiro Kajiyama, Juichi Ooki, Motomi Takahashi, Tsutomu Otsuka
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Patent number: 10438737Abstract: An electronic component includes a magnetic core member, a winding and a magnetic exterior body. The magnetic core member has a flat base and a core. The flat base has a top surface, a bottom surface, a first side surface and a second side surface opposite to the first side surface. The core is located on the top surface of the flat base. A winding has an edgewise coil and two non-wound flat wires that extend from the edgewise coil. A magnetic exterior body covers at least the core and the edgewise coil. The two non-wound flat wires continuously extend along the top surface, the first side surface, the bottom surface and the second side surface of the flat base in this order. The two non-wound flat wires located on the bottom surface work as electrodes.Type: GrantFiled: November 30, 2016Date of Patent: October 8, 2019Assignee: SUMIDA CORPORATIONInventors: Shinichi Sakamoto, Zhigang Cheng, Fernando Chan Mock, Mitsugu Kawarai
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Patent number: 10431378Abstract: A method for manufacturing an electronic component is provided. The method includes placing a T-shaped core and an air-core coil in a mold, placing a mixture of a metal magnetic material and a thermosetting resin into the mold so as to embed the T-shaped core and the air-core coil in the mixture, applying pressure in a range of 0.1 to 20.0 kg/cm2 to the placed mixture so that a shape of the placed mixture conforms to the T-shaped core, the air-core coil, and the mold, and, after applying the pressure, heating the mixture at a predetermined temperature for a predetermined time so that the placed mixture is hardened.Type: GrantFiled: April 16, 2019Date of Patent: October 1, 2019Assignee: SUMIDA CORPORATIONInventors: Shinichi Sakamoto, Douglas James Malcolm
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Patent number: 10424835Abstract: A door handle comprising: a housing mounted swingably with respect to a door of a vehicle; an antenna portion accommodated in the housing; an electrostatic-capacity sensor including an electrostatic-capacity detecting electrode, which is accommodated in the housing; and a conductive member which is formed between the electrostatic-capacity detecting electrode and the inner surface of the housing in a state of always being insulated with respect to the electrostatic-capacity detecting electrode.Type: GrantFiled: March 23, 2017Date of Patent: September 24, 2019Assignee: Sumida CorporationInventor: Hozumi Ueda
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Publication number: 20190287713Abstract: Provided is a coil component 100 including a first coil element 111 and a second coil element 112 each formed in an angular-tubular shape and disposed in parallel, and an interconnection part 113 for connecting the both coil elements 111, 112. The interconnection part 113 is configured with a first connecting part 123A, a second connecting part 123B, an intermediate part 123C, and an inverted part 123D. The first connecting part 123A is configured with a flatwise-bending portion 123A1 and an edgewise-winding portion 123A2. The second connecting part 123B is configured with a flatwise-bending portion 123B1 and an edgewise-winding portion 123B2. The intermediate part 123C is provided to extend over a gap part 115 between the second coil element 112 and the first coil element 111 on a front end-face side without being twisted.Type: ApplicationFiled: February 6, 2019Publication date: September 19, 2019Applicant: SUMIDA CORPORATIONInventor: Hiroshi KAWASHIMA
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Publication number: 20190272942Abstract: A coil component 100 includes a first coil element 111 and a second coil element 112 each formed in an angular-tubular shape and disposed in parallel by winding and laminating a single flat wire 101 in one direction with edgewise-winding between one end portion 101A and another end portion 101B and bending the wound and laminated coil into two, and includes an interconnection part 113 for connecting the both elements. The interconnection part 113 includes a coil element winding end portion side raised part 123A, a coil element winding start portion side raised part 123B, and an intermediate part 123C extended between the two raised parts 123A and 123B.Type: ApplicationFiled: January 24, 2019Publication date: September 5, 2019Applicant: SUMIDA CORPORATIONInventor: Hiroshi KAWASHIMA
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Publication number: 20190252841Abstract: A slit having a predetermined width and a predetermined length is formed in a longitudinal direction from a middle of a distal edge of a tip of a flat wire. Next, one of a left strip and a right strip is brought upward and the other is brought downward, and then the left strip and the right strip vertically separated are laterally brought close to each other. Finally, the left strip and the right strip are vertically pressed to abut against each other.Type: ApplicationFiled: January 16, 2019Publication date: August 15, 2019Applicant: SUMIDA CORPORATIONInventors: Tomoaki ASARI, Tomoyuki KANEKO