Patents by Inventor Kazuhiko Takenaka
Kazuhiko Takenaka 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: 20240047121Abstract: A coil component includes a drum core that includes a winding core portion and a pair of flange portions formed at the ends of the winding core portion, electrodes that are included in the pair of flange portions, and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes. The flange portions are continuous with the winding core portion and have slopes that guide the extended portions to the electrodes.Type: ApplicationFiled: October 19, 2023Publication date: February 8, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Kazuhiko TAKENAKA, Shigeto YAMAMOTO, Ryota HASHIMOTO, Akio IGARASHI, Yuki KANBE
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Patent number: 11837396Abstract: A coil component includes a drum core that includes a winding core portion and a pair of flange portions formed at the ends of the winding core portion, electrodes that are included in the pair of flange portions, and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes. The flange portions are continuous with the winding core portion and have slopes that guide the extended portions to the electrodes.Type: GrantFiled: January 31, 2019Date of Patent: December 5, 2023Assignee: Murata Manufacturing Co., Ltd.Inventors: Kazuhiko Takenaka, Shigeto Yamamoto, Ryota Hashimoto, Akio Igarashi, Yuki Kanbe
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Patent number: 11651888Abstract: A flange portion includes a projecting surface that is positioned in a leading end of a projection projecting toward a mounting substrate and that faces the mounting substrate, and a principal surface that extends in a direction crossing the projecting surface and that faces a direction in which the pair of flange portions are aligned. A metal terminal includes a mounting portion opposed to the projecting surface and an end surface portion opposed to the principal surface. An angle ? between the mounting portion and the end surface portion satisfies the relationship 85 degrees??<90 degrees. The angle ? between the mounting portion and the end surface portion is smaller than an angle ?1 between the projecting surface and the principal surface.Type: GrantFiled: January 31, 2019Date of Patent: May 16, 2023Assignee: Murata Manufacturing Co., Ltd.Inventors: Akio Igarashi, Kazuhiko Takenaka, Shigeto Yamamoto, Ryota Hashimoto, Yuki Kanbe
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Publication number: 20190244748Abstract: A flange portion includes a projecting surface that is positioned in a leading end of a projection projecting toward a mounting substrate and that faces the mounting substrate, and a principal surface that extends in a direction crossing the projecting surface and that faces a direction in which the pair of flange portions are aligned. A metal terminal includes a mounting portion opposed to the projecting surface and an end surface portion opposed to the principal surface. An angle ? between the mounting portion and the end surface portion satisfies the relationship 85 degrees??<90 degrees. The angle ? between the mounting portion and the end surface portion is smaller than an angle ?1 between the projecting surface and the principal surface.Type: ApplicationFiled: January 31, 2019Publication date: August 8, 2019Applicant: Murata Manufacturing Co., Ltd.Inventors: Akio IGARASHI, Kazuhiko TAKENAKA, Shigeto YAMAMOTO, Ryota HASHIMOTO, Yuki KANBE
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Publication number: 20190244744Abstract: A coil component includes a drum core that includes a winding core portion and a pair of flange portions formed at the ends of the winding core portion, electrodes that are included in the pair of flange portions, and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes. The flange portions are continuous with the winding core portion and have slopes that guide the extended portions to the electrodes.Type: ApplicationFiled: January 31, 2019Publication date: August 8, 2019Applicant: Murata Manufacturing Co., Ltd.Inventors: Kazuhiko TAKENAKA, Shigeto YAMAMOTO, Ryota HASHIMOTO, Akio IGARASHI, Yuki KANBE
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Patent number: 8198971Abstract: A laminated inductor includes a laminate having a plurality of insulating layers, a helical coil and first and second external electrodes on an underside of the laminate. The helical coil has coiled electrodes, each coiled up in one turn, and the first and second external electrodes are connected to respective, or corresponding, ends of the helical coil. Each of the coiled electrodes of the helical coil follow a path along the periphery of one of the insulating layers and include first end located in the path and second end located outside the path. The helical coil and the first external electrode are connected to each other by a lead via conductor formed in a space that is enclosed by parts of the coiled electrodes including the first and second ends.Type: GrantFiled: June 23, 2010Date of Patent: June 12, 2012Assignee: Murata Manufacturing Co., Ltd.Inventors: Kazuhiko Takenaka, Tsuyoshi Kawada
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Publication number: 20110001599Abstract: A laminated inductor includes a laminate having a plurality of insulating layers, a helical coil and first and second external electrodes on an underside of the laminate. The helical coil has coiled electrodes, each coiled up in one turn, and the first and second external electrodes are connected to respective, or corresponding, ends of the helical coil. Each of the coiled electrodes of the helical coil follow a path along the periphery of one of the insulating layers and include first end located in the path and second end located outside the path. The helical coil and the first external electrode are connected to each other by a lead via conductor formed in a space that is enclosed by parts of the coiled electrodes including the first and second ends.Type: ApplicationFiled: June 23, 2010Publication date: January 6, 2011Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Kazuhiko TAKENAKA, Tsuyoshi KAWADA
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Patent number: 7161446Abstract: A noise filter includes a laminate body including magnetic layers, line conductors and ground conductors, with one line conductor and one ground conductor alternately arranged in interfaces between the magnetic layers. With an electrical signal applied to the line conductors with the ground conductors grounded, a high-frequency noise is attenuated using a magnetic loss of the magnetic layer.Type: GrantFiled: October 7, 2005Date of Patent: January 9, 2007Assignee: Murata Manufacturing Co., Ltd.Inventors: Katsuyuki Uchida, Hidetoshi Yamamoto, Takashi Kodama, Kazuhiko Takenaka, Takehiko Otsuki
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Publication number: 20060028303Abstract: A noise filter includes a laminate body including magnetic layers, line conductors and ground conductors, with one line conductor and one ground conductor alternately arranged in interfaces between the magnetic layers. With an electrical signal applied to the line conductors with the ground conductors grounded, a high-frequency noise is attenuated using a magnetic loss of the magnetic layer.Type: ApplicationFiled: October 7, 2005Publication date: February 9, 2006Inventors: Katsuyuki Uchida, Hidetoshi Yamamoto, Takashi Kodama, Kazuhiko Takenaka, Takehiko Otsuki
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Publication number: 20040135652Abstract: A noise filter includes a laminate body including magnetic layers, line conductors and ground conductors, with one line conductor and one ground conductor alternately arranged in interfaces between the magnetic layers. With an electrical signal applied to the line conductors with the ground conductors grounded, a high-frequency noise is attenuated using a magnetic loss of the magnetic layer.Type: ApplicationFiled: December 4, 2003Publication date: July 15, 2004Applicant: Murata Manufacturing Co., Ltd.Inventors: Katsuyuki Uchida, Hidetoshi Yamamoto, Takashi Kodama, Kazuhiko Takenaka, Takehiko Otsuki
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Patent number: 6623878Abstract: A sintered ferrite body is obtained by baking a raw ferrite material including about 0.1% to about 30% by weight of a glass having, as a single material, and having a specific resistance &rgr; (&OHgr;) of about 10 or more in the log &rgr; unit, and a softening point of about 400° C. to about 700° C., in order to overcome the problem that relatively low specific resistance of a ferrite material causes insulation deterioration as well as migration of an internal electrode in a laminated ferrite component when constructing the laminated ferrite component from a sintered ferrite body.Type: GrantFiled: October 4, 2000Date of Patent: September 23, 2003Assignee: Murata Manufacturing Co., Ltd.Inventor: Kazuhiko Takenaka
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Patent number: 6210596Abstract: A magnetic ceramic composition containing ferrite serving as a primary component and a sintering aid. The composition can be sintered at low temperature. The sintering aid contains about 2-45 mol % Li2O; about 5-40 mol % RO, with R being at least one of Ba, Sr, Ca, and Mg; and about 30-70 mol % (Ti, Si)O2 with SiO2 accounting for at least about 15 mol %. The resultant composition provides inductor elements in which migration of inner conductors is suppressed, and insulation deterioration and increase of direct-current resistance is restrained.Type: GrantFiled: December 23, 1998Date of Patent: April 3, 2001Assignee: Murata Manufacturing Co., Ltd.Inventors: Kazuhiko Takenaka, Tatsuru Takaoka
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Patent number: 6191667Abstract: A laminated body includes a first insulating sheet having first internal conductors disposed thereon, a second insulating sheet having second internal conductors are given, and a protective sheet, wherein the internal conductors define inductors. The first insulating sheet, the second insulating sheet and the protective sheet are stacked on top of each other and laminated to define the laminated body. When a distance between the end surfaces in a length direction of the laminated body and the inductors located adjacent the end surfaces is less than a fixed value, the internal conductors defining the inductors on the side of the end surfaces are arranged in a zig zag pattern which extends toward inner inductors.Type: GrantFiled: July 2, 1999Date of Patent: February 20, 2001Assignee: Murata Mfg. Co., Ltd.Inventors: Kazuhiko Takenaka, Tatsuru Takaoka