Patents by Inventor Kazunori Arimitsu
Kazunori Arimitsu 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: 20230223180Abstract: A device includes a core having a first end and a second end, and first and second wires wound around the core, where the core has first, second, and third sections, the second section being arranged between the first and third sections. Each of the first and second wires includes an ith turn located on the first section, a jth turn located on the second section, and a kth turn located on the third section. The ith turn of the first wire is closer to the first end than the ith turn of the second wire, the jth turn of the first wire is closer to the second end than the jth turn of the second wire, and the kth turn of the first wire is closer to the first end than the kth turn of the second wire.Type: ApplicationFiled: March 15, 2023Publication date: July 13, 2023Applicant: TDK CORPORATIONInventors: Toshio TOMONARI, Tsutomu KOBAYASHI, Kazunori ARIMITSU, Yuma KOMAYA
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Patent number: 11636973Abstract: A device includes a core having a first end and a second end, and first and second wires wound around the core, each of the first and second wires having 1st to Nth turns counting from the first end to the second end, the 1st to Nth turns including an i?1th turn, an ith turn, a jth turn, and a j+1th turn, where j is greater than i. The ith turn of the first wire is closer to the first end than the ith turn of the second wire, the i?1th turn of the second wire is closer to the first end than the ith turn of the first wire, and the i?1th turn of the first wire is closer to the first end than the i?1th turn of the second wire.Type: GrantFiled: February 5, 2020Date of Patent: April 25, 2023Assignee: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu, Yuma Komaya
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Publication number: 20230095851Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: ApplicationFiled: December 1, 2022Publication date: March 30, 2023Inventors: Toshio TOMONARI, Tsutomu KOBAYASHI, Kazunori ARIMITSU
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Patent number: 11545296Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: GrantFiled: January 5, 2021Date of Patent: January 3, 2023Assignee: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
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Publication number: 20220399157Abstract: A highly reliable coil device is provided. An inductor 1 includes a coil 2 formed of a flat wire, a first terminal 4a including a first wire connecting portion 42a formed with a first accommodation recessed portion 421a in which a first lead-out portion 3a of the coil 2 is accommodated, and a second terminal 4b including a second wire connecting portion 42b formed with a second accommodation recessed portion 421b in which a second lead-out portion 3b of the coil 2 is accommodated, in which the first accommodation recessed portion 421a and the second accommodation recessed portion 421b are displaced from each other along a winding axis direction of the coil 2.Type: ApplicationFiled: July 14, 2021Publication date: December 15, 2022Applicant: TDK CORPORATIONInventors: Kazunori ARIMITSU, Nobuo KITAJIMA, Fuyuki MIURA, Takehiko NARISAWA, Kiichi FUJISAWA
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Publication number: 20220399156Abstract: A highly reliable coil device is provided. An inductor 1 includes: a core 8; a coil 2 embedded inside the core 8; and terminals 4a and 4b provided with wire connecting portions 42a and 42b, to which lead-out portions 3a and 3b of the coil 2 are connected, the wire connecting portions 42a and 42b being disposed inside the core 8, in which the terminals 4a and 4b are disposed inside the core 8, and the terminals 4a and 4b include base portions 41a and 41b on which a second end portion 2b of the coil 2 in a winding axis direction is provided.Type: ApplicationFiled: July 14, 2021Publication date: December 15, 2022Applicant: TDK CORPORATIONInventors: Kazunori ARIMITSU, Nobuo KITAJIMA
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Publication number: 20220020527Abstract: An inductor includes a coreless coil and terminals connected to end portions of the coreless coil. Positioning portions regulating the position of the coreless coil are formed at the terminals.Type: ApplicationFiled: July 14, 2021Publication date: January 20, 2022Applicant: TDK CORPORATIONInventors: Kazunori ARIMITSU, Nobuo KITAJIMA
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Publication number: 20220020528Abstract: An inductor includes: a coil; terminals connected to end portions of the coil; a first core having a columnar portion where the coil is disposed and a base portion having an upper surface where the columnar portion is formed; and a second core covering the upper surface of the base portion together with the coil. The terminals are disposed on the upper surface of the base portion.Type: ApplicationFiled: July 14, 2021Publication date: January 20, 2022Applicant: TDK CORPORATIONInventors: Kazunori ARIMITSU, Nobuo KITAJIMA
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Publication number: 20210125772Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: ApplicationFiled: January 5, 2021Publication date: April 29, 2021Inventors: Toshio TOMONARI, Tsutomu KOBAYASHI, Kazunori ARIMITSU
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Patent number: 10910144Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: GrantFiled: July 14, 2020Date of Patent: February 2, 2021Assignee: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
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Publication number: 20200343035Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: ApplicationFiled: July 14, 2020Publication date: October 29, 2020Inventors: Toshio TOMONARI, Tsutomu KOBAYASHI, Kazunori ARIMITSU
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Patent number: 10755848Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: GrantFiled: November 21, 2019Date of Patent: August 25, 2020Assignee: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
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Publication number: 20200185145Abstract: A device includes a core having a first end and a second end, and first and second wires wound around the core, each of the first and second wires having 1st to Nth turns counting from the first end to the second end, the 1st to Nth turns including an i?1th turn, an ith turn, a jth turn, and a j+1th turn, where j is greater than i. The ith turn of the first wire is closer to the first end than the ith turn of the second wire, the i?1th turn of the second wire is closer to the first end than the ith turn of the first wire, and the i?1th turn of the first wire is closer to the first end than the i?1th turn of the second wire.Type: ApplicationFiled: February 5, 2020Publication date: June 11, 2020Applicant: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu, Yuma Komaya
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Patent number: 10600555Abstract: A device is provided that includes a core having a first end and a second end, and first and second wires wound around the core so as to cross each other on the core to form a cross point. The a winding structure of an ith turn of the first and second wires counting from the cross point toward the first end, and a winding structure of an ith turn of the first and second wires counting from the cross point toward the second end, are substantially symmetrical about the cross point.Type: GrantFiled: April 14, 2017Date of Patent: March 24, 2020Assignee: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu, Yuma Komaya
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Publication number: 20200090857Abstract: Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other.Type: ApplicationFiled: November 21, 2019Publication date: March 19, 2020Inventors: Toshio TOMONARI, Tsutomu KOBAYASHI, Kazunori ARIMITSU
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Patent number: 10522283Abstract: A common mode filter includes a core, and first and second wires wound around the core. Each of the first and second wires includes at least i?1th turn, ith turn, and i+1th turn. The ith turn of the first wire intersects with the ith turn of the second wire without intersecting each of the i?1th and i+1th turns of the second wire.Type: GrantFiled: June 19, 2018Date of Patent: December 31, 2019Assignee: TDK CORPORATIONInventors: Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
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Patent number: 10249429Abstract: At the position where the lead art of the wire is projecting out from the outer face of the core part and spaced apart from the side face, the bonding part between the lead part and the terminal electrode is formed. The terminal electrode comprises the terminal body installed along the side face of the core body, and the lead supporting part bended from the terminal body towards the bonding part at the near position where the lead part projects out from the side face of the core part. The crossing angle of the lead supporting part with respect to the side face of the core body is less than 90 degrees.Type: GrantFiled: June 9, 2017Date of Patent: April 2, 2019Assignee: TDK CORPORATIONInventors: Kazunori Arimitsu, Shunpei Kikuchi, Akiumi Oba
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Patent number: D850379Type: GrantFiled: March 20, 2018Date of Patent: June 4, 2019Assignee: TDK CORPORATIONInventors: Yuma Komaya, Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
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Patent number: D871338Type: GrantFiled: March 20, 2018Date of Patent: December 31, 2019Assignee: TDK CORPORATIONInventors: Yuma Komaya, Toshio Tomonari, Tsutomu Kobayashi, Kazunori Arimitsu
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Patent number: D993181Type: GrantFiled: February 23, 2022Date of Patent: July 25, 2023Assignee: TDK CORPORATIONInventor: Kazunori Arimitsu