Patents Assigned to Tokin Corporation
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Publication number: 20220336159Abstract: A solid electrolytic capacitor comprises a capacitor element, an outer anode terminal, an outer cathode terminal and an outer mold. The capacitor element has an anode lead wire, an anode body and a cathode layer. The capacitor element has an upper surface and a lower surface in an up-down direction. The outer cathode terminal and the outer anode terminal are positioned away from each other in a predetermined direction perpendicular to the up-down direction. The outer cathode terminal has an upper portion, a lower portion and a connecting portion. One of the upper portion and the lower portion is longer than a remaining one of the upper portion and the lower portion in the predetermined direction. The outer mold covers the capacitor element so that each of the outer anode terminal and the outer cathode terminal is partially exposed to an outside of the solid electrolytic capacitor.Type: ApplicationFiled: April 13, 2022Publication date: October 20, 2022Applicant: TOKIN CORPORATIONInventors: Hitoshi TAKATA, Masami ISHIJIMA, Satoshi ABE, Kazuaki SAITO
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Publication number: 20220285089Abstract: A magnetic sheet is used as a noise reduction member for a cable. The magnetic sheet has a width of 5 mm to 15 mm. The magnetic sheet has a magnetic layer and a protective layer. The magnetic layer comprises soft-magnetic particles and a binder. Each of the soft-magnetic particles has a flat shape. A content of the soft-magnetic particles in the magnetic layer is from 35 vol % to 40 vol % with respect to the overall volume of the magnetic layer. The binder is made of polyacrylic rubber or of mixture of polyacrylic rubber and nitrile rubber. The binder binds the soft-magnetic particles to each other. A content of the binder in the magnetic layer is from 35 vol % to 65 vol % with respect to the overall volume of the magnetic layer. The protective layer reinforces the magnetic layer.Type: ApplicationFiled: February 28, 2022Publication date: September 8, 2022Applicant: TOKIN CORPORATIONInventors: Tadashi OMIYA, Masakazu ABE
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Patent number: 11383487Abstract: A laminated substrate includes an upper prepreg cured body, a lower prepreg cured body and a magnetic member. The magnetic member is sandwiched between the upper prepreg cured body and the lower prepreg cured body in an up-down direction. The upper prepreg cured body is directly coupled to the lower prepreg cured body all over a predetermined area surrounding the magnetic member in a plane perpendicular to the up-down direction. The magnetic member is formed by binding soft magnetic metal powder using a binder. The soft magnetic metal powder consists of particles each of which has a flat shape. The binder comprises inorganic oxide as a chief ingredient. The magnetic member includes the soft magnetic metal powder of 60 vol. % or more and open pores of 10 vol. % or more and 30 vol. % or less. The magnetic member has a thickness of 0.3 mm or less.Type: GrantFiled: January 14, 2019Date of Patent: July 12, 2022Assignee: TOKIN CORPORATIONInventors: Hiroshi Shima, Shun Mikoshiba, Kenichi Chatani
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Patent number: 11380465Abstract: A rare-earth cobalt permanent magnet with good magnetic properties is provided. A rare-earth cobalt permanent magnet contains 23 to 27 mass % R, 3.5 to 5.0 mass % Cu, 18 to 25 mass % Fe, 1.5 to 3.0 mass % Zr in mass and a remainder Co with inevitable impurities, where an element R is a rare earth element at least containing Sm. The rare-earth cobalt permanent magnet has a metal structure including a plurality of crystal grains and a continuously extending grain boundary. A content of Cu in the grain boundary is higher than a content of Cu in the crystal grains, and a content of Zr in the grain boundary is higher than a content of Zr in the crystal grains.Type: GrantFiled: October 7, 2016Date of Patent: July 5, 2022Assignees: KYUSHU INSTITUTE OF TECHNOLOGY, TOKIN CorporationInventors: Masaaki Takezawa, Teruhiko Fujiwara, Hiroaki Machida, Hideyuki Yoshikawa
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Publication number: 20220172887Abstract: A method of manufacturing a magnetic member comprises preparing a base member, which have a front surface and a back surface, and wherein an anchor coat layer is formed on the front surface, and forming a composite magnetic layer on the anchor coat layer.Type: ApplicationFiled: November 23, 2021Publication date: June 2, 2022Applicant: TOKIN CORPORATIONInventors: Tadashi OMIYA, Masakazu ABE
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Patent number: 11328864Abstract: A compound line filter includes a bobbin, two coils and a magnetic core. The coils are wound on the bobbin in a state of being separated from each other in an axial direction. The magnetic core includes a closed magnetic path part and a secondary magnetic path part. The bobbin is attached to the closed magnetic path part. The secondary magnetic path part extends from the closed magnetic path part in a direction intersecting with the axial direction and is positioned between the coils in the axial direction. The bobbin includes at least one gear, and the gear is positioned between the coils in the axial direction.Type: GrantFiled: June 22, 2017Date of Patent: May 10, 2022Assignees: TOKIN CORPORATION, TOKIN ELECTRONICS (XIAMEN) CORPORATIONInventors: Jie Huang, Michitaka Itaya, Kazuya Sugawara, Shota Misumi, Yuichirou Nagayama, Yukiyasu Yamauchi
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Publication number: 20220022327Abstract: A method includes preparing a first substrate member in which a cavity is formed. Moreover, the method includes preparing a magnetic member having a plurality of magnetic pieces. The magnetic member is placed in the cavity, and the second substrate member is placed on the first substrate member to close the cavity. The cavity is defined at least in part by a pair of wall surfaces facing each other in a lateral direction and opens upward in an up-down direction perpendicular to the lateral direction. The magnetic pieces are coupled with each other by positioning members so as to be arranged at regular intervals in a predetermined direction. The placing of the magnetic member in the cavity is carried out so that the predetermined direction coincides with the lateral direction or a front-rear direction perpendicular to both of the lateral direction and the up-down direction.Type: ApplicationFiled: March 19, 2021Publication date: January 20, 2022Applicant: TOKIN CORPORATIONInventor: Hiroshi SHIMA
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Patent number: 11190159Abstract: A noise filter includes a metallic bottom plate, a case main body integrally formed with a terminal strip and attached to the bottom plate, and a capacitor including a terminal configured to be connected in the terminal strip. The noise filter further includes a capacitor housing part formed inside the terminal strip in the case main body, the capacitor housing part being configured to house the capacitor, and an inductor disposed on a top surface side of the case main body, the inductor comprising a terminal configured to be connected in the terminal strip. The capacitor housing part houses the capacitor, in a state where the capacitor is inclined with respect to the bottom plate, so that a lead part of the terminal of the capacitor is positioned on an upper end side of the capacitor in an inclination direction.Type: GrantFiled: October 7, 2019Date of Patent: November 30, 2021Assignee: TOKIN CorporationInventors: Honoka Asano, Shu Sato, Yuta Nakano
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Patent number: 11101422Abstract: A pyroelectric infrared sensor device comprising: a pyroelectric infrared sensor part (2); and a cover member (3). The pyroelectric infrared sensor part comprises: a pyroelectric element (21); a housing (24) that the pyroelectric element is placed inside of and comprises an opening at a position facing a light receiving surface of the pyroelectric element; and an infrared transmission filter (25) that is located to cover the opening of the housing. The cover member covers at least a top surface of the pyroelectric infrared sensor part. The infrared transmission filter transmits light equal to or greater than a wavelength of 1 ?m. The cover member has a property that a transmittance of infrared light having a wavelength of from 3 ?m to 5.5 ?m is equal to or greater than 10% and has a uniform material quality in an area corresponding to the top surface of the pyroelectric infrared sensor part.Type: GrantFiled: July 14, 2017Date of Patent: August 24, 2021Assignee: TOKIN CORPORATIONInventors: Shigemi Fujiwara, Makoto Kaneko, Masahiro Saito
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Patent number: 11056262Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.Type: GrantFiled: June 20, 2018Date of Patent: July 6, 2021Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOKIN CorporationInventors: Michitaka Itaya, Toshiaki Oka, Koki Harada, Yukiyasu Yamauchi, Takuma Terui, Takeshi Harasawa, Atsushi Naito, Keiji Yashiro, Kazuhiro Shiraishi
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Patent number: 10998137Abstract: An electrolytic capacitor according to an aspect of the present disclosure includes a valve metal, a dielectric oxide film layer formed on a surface of the valve metal, a surface treatment agent layer formed on the dielectric oxide film layer, and an electrolyte layer formed on the surface treatment agent layer. The electrolyte layer includes a conductive polymer layer and an ionic liquid. For example, the conductive polymer layer is formed so that the conductive polymer layer is in contact with the surface treatment agent layer, and at least some of voids present in an interface between the conductive polymer layer and the surface treatment agent layer are filled with the ionic liquid.Type: GrantFiled: August 3, 2018Date of Patent: May 4, 2021Assignee: TOKIN CORPORATIONInventors: Yasuhisa Sugawara, Masami Ishijima, Kenji Araki
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Patent number: 10998138Abstract: A solid electrolytic capacitor according to the present disclosure includes an anode body made of a porous valve metal, a dielectric layer formed on a surface of the anode body, and a solid electrolyte layer formed on the dielectric layer. A carboxylic acid ester is filled in at least part of cavities inside the solid electrolyte layer. By the solid electrolytic capacitor according to the present disclosure, it is possible to provide a solid electrolytic capacitor capable of suppressing an increase in ESR and an increase in leakage current.Type: GrantFiled: December 5, 2018Date of Patent: May 4, 2021Assignee: TOKIN CORPORATIONInventors: Masanori Takahashi, Satoshi Iwai, Yusuke Hoshina
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Patent number: 10984932Abstract: An amorphous soft magnetic alloy of the formula (Fe1-?TM?)100-w-x-y-zPwBxLySiz TipCqMnrCus, wherein TM is Co or Ni; L is Al, Cr, Zr, Mo or Nb; 0???0.3, 2?w?18 at %, 2?x?18 at %, 15?w+x?23 at %, 1<y?5 at %, 0?z?4 at %; p, q, r, and s represents an addition ratio such that the total mass of Fe, TM, P, B, L and Si is 100, and 0?p?0.3, 0?q?0.5, 0?r?2, 0?s?1 and r+s>0; the composition fulfills one of the following conditions: L is Cr, Zr, Mo or Nb; or L is a combination of Al and Cr, Zr, Mo or Nb, wherein 0<Al?5 at %, 1?Cr?4 at %, 0<Zr?5 at %, 2?Mo?5 at %, and 2?Nb?5 at %; the alloy has a crystallization start temperature (Tx) which is 550° C. or less, a glass transition temperature (Tg) which is 520° C. or less, and a supercooled liquid region represented by ?Tx=Tx?Tg, which is 20° C. or more.Type: GrantFiled: June 19, 2017Date of Patent: April 20, 2021Assignees: TOKIN CORPORATION, TOHOKU UNIVERSITYInventors: Akiri Urata, Teruhiko Fujiwara, Hiroyuki Matsumoto, Yasunobu Yamada, Akihisa Inoue
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Patent number: 10943725Abstract: A laminated substrate embedded type inductor includes a laminated resin substrate in which a pair of first resin substrates are laminated, a sheet-shaped magnetic core placed in the laminated resin substrate, via holes provided so as to pass through the laminated resin substrate, and a coil formed via the via holes. The laminated resin substrate contains an adhesive component, wherein the sheet-shaped magnetic core is a molded body obtained by forming a soft magnetic flat metal powder into a flat plate, the soft magnetic flat metal powder is oriented in a plane of the flat plate, and a generated magnetic flux of the coil circulates in the plane of the flat plate, and wherein the magnetic core is integrated with the laminated resin substrate so that the adhesive component is impregnated in pores of the magnetic core.Type: GrantFiled: September 14, 2018Date of Patent: March 9, 2021Assignee: TOKIN CORPORATIONInventors: Kenichi Chatani, Naoharu Yamamoto, Shigeyoshi Yoshida
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Publication number: 20210044903Abstract: A piezoelectric speaker comprises a frame, a piezoelectric element, a diaphragm, an edge, a spacer, a cover and a supporting portion. The frame has an upper surface and a lower surface in an up-down direction. The diaphragm has an outer peripheral end in a horizontal plane perpendicular to the up-down direction. The cover has an outer peripheral end in the horizontal plane. In the horizontal plane, the outer peripheral end of the diaphragm is positioned inside the outer peripheral end of the cover. The edge supports the outer peripheral end of the diaphragm so that the outer peripheral end of the diaphragm is freely vibratable. The spacer is fixed to both of the piezoelectric element and the diaphragm in the up-down direction. The cover is positioned above the diaphragm in the up-down direction. The supporting portion is positioned on the frame and supports the cover.Type: ApplicationFiled: July 20, 2020Publication date: February 11, 2021Applicant: TOKIN CORPORATIONInventors: Yoshiyuki ABE, Masafumi KATSUNO
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Publication number: 20210031268Abstract: Provided is a method of manufacturing a soft magnetic dust core. The method includes: preparing coated powder including amorphous powder made of an Fe-B-Si-P-C-Cu-based alloy, an Fe-B-P-C-Cu-based alloy, an Fe-B-Si-P-Cu-based alloy, or an Fe-B-P-Cu-based alloy, with a first initial crystallization temperature Tx1 and a second initial crystallization temperature Tx2; and a coating formed on a surface of particles of the amorphous powder; applying a compacting pressure to the coated powder or a mixture of the coated powder and the amorphous powder at a temperature equal to or lower than Tx1?100 K; and heating to a maximum end-point temperature equal to or higher than Tx1?50 K and lower than Tx2 with the compacting pressure being applied.Type: ApplicationFiled: October 21, 2020Publication date: February 4, 2021Applicants: JFE STEEL CORPORATION, JFE PRECISION CORPORATION, TOKIN CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Naomichi NAKAMURA, Makoto NAKASEKO, Takuya TAKASHITA, Mineo MURAKI, Hoshiaki TERAO, Raita WADA, Akiri URATA, Yu KANAMORI, Makoto YAMAKI, Koichi OKAMOTO, Toshinori TSUDA, Shoichi SATO, Kimihiro OZAKI
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Publication number: 20210020356Abstract: An inductor comprises a core and a coil. The coil has a first terminal, a second terminal, a first portion, a second portion, a third portion, a first coupling portion, a second coupling portion, a first extending portion and a second extending portion. Each of the first portion and the second portion is positioned apart from a first edge of the core. Each of the first portion and the second portion is parallel to the first edge. Each of the first portion and the second portion is positioned apart from the third portion in a first horizontal direction. The third portion is positioned apart from a second edge of the core. The third portion is parallel to the second edge. The first extending portion couples the first portion and the third portion with each other. The second extending portion couples the second portion and the third portion with each other.Type: ApplicationFiled: July 8, 2020Publication date: January 21, 2021Applicant: TOKIN CORPORATIONInventor: Toshiaki OKA
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Publication number: 20200384531Abstract: A composite magnetic material comprises spherical soft magnetic metal powder incorporated in the composite magnetic material in a dispersed manner, a flame retardant incorporated in the composite magnetic material in a dispersed manner; and a binder configured to bind the soft magnetic metal powder and the flame retardant. The composite magnetic material is formed and processed into a sheet shape. The composite magnetic material has a volume occupancy of the soft magnetic metal powder of 45 vol % or more and 68 vol % or less.Type: ApplicationFiled: June 1, 2020Publication date: December 10, 2020Applicant: TOKIN CORPORATIONInventors: Tetsuo ITO, Masakazu ABE
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Patent number: D906965Type: GrantFiled: July 25, 2018Date of Patent: January 5, 2021Assignee: TOKIN CORPORATIONInventors: Toshiaki Oka, Takanori Aizawa
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Patent number: D971842Type: GrantFiled: April 8, 2021Date of Patent: December 6, 2022Assignee: TOKIN CorporationInventors: Shun Mikoshiba, Hiroshi Shima, Kenichiro Kobayashi, Yoshihiro Saito