Patents by Inventor Yoji Tozawa
Yoji Tozawa 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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Patent number: 12125627Abstract: A multilayer conductor component includes an element body, an internal conductor, and an external electrode. The external electrode includes a sintered metal layer. The sintered metal layer is disposed on an end surface, a pair of side surfaces, a first main surface, and a second main surface of the element body. An electrode length, which is a length in the first direction from an edge of the sintered metal layer to a reference plane including the end surface, at a central portion of the first main surface in the third direction, is shorter than the electrode length at each of the ridge portions. The electrode length at a central portion of each of the pair of side surfaces in the second direction is equal to or less than the electrode length at each of the ridge portions.Type: GrantFiled: June 3, 2021Date of Patent: October 22, 2024Assignee: TDK CORPORATIONInventors: Daiki Kato, Masashi Shimoyasu, Yoji Tozawa, Seiichi Nakagawa, Akihiko Oide, Makoto Yoshino, Kazuhiro Ebina
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Patent number: 12094642Abstract: A multilayer inductor component includes an element body, an internal conductor, and an external electrode. The internal conductor is disposed in the element body. The external electrode is disposed on a surface of the element body and electrically connected to the internal conductor. The external electrode includes a sintered metal layer and a plating layer. The sintered metal layer is disposed on the surface of the element body. The plating layer covers the sintered metal layer. The sintered metal layer includes a thick portion and thin portions. The thick portion covers the surface of the element body. A plurality of glass particles is dispersed in the thick portion. The thin portions cover glass particles exposed on a surface of the thick portion among the plurality of glass particles and being in contact with the plating layer.Type: GrantFiled: May 25, 2021Date of Patent: September 17, 2024Assignee: TDK CORPORATIONInventors: Masashi Shimoyasu, Daiki Kato, Yoji Tozawa, Takashi Endo, Seiichi Nakagawa, Mitsuru Ito, Kenta Sasaki, Akihiko Oide, Makoto Yoshino, Kazuhiro Ebina
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Publication number: 20240242883Abstract: A method for manufacturing a coil component including an element body, and a coil disposed inside the element body and including a first coil conductor and a second coil conductor having different shapes, the method comprises: applying a first photosensitive conductive paste on a substrate and exposing the first photosensitive conductive paste to light with a pattern corresponding to the first coil conductor to form a first curing pattern; after the forming of the first curing pattern, applying a second photosensitive conductive paste on the first photosensitive conductive paste and exposing the second photosensitive conductive paste to light with a pattern corresponding to the second coil conductor to form a second curing pattern; after the forming of the second curing pattern, developing portions of the first photosensitive conductive paste and the second photosensitive conductive paste that were not exposed; and after the developing, adding an insulating material on the substrate.Type: ApplicationFiled: January 11, 2024Publication date: July 18, 2024Applicant: TDK CorporationInventors: Yuya ISHIMA, Kenji KOMORITA, Shingo HATTORI, Yoji TOZAWA, Masaki TAKAHASHI, Hidenobu UMEDA, Yusuke NAGAI, Akihiko OIDE
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Publication number: 20240128020Abstract: In a method for manufacturing a laminated coil component, in which a laminated coil component is manufactured by laminating insulator sheets in order on which conductors having predetermined patterns are formed, the insulator sheets are laminated such that a distance in a lamination direction between a first lead-out conductor laminated first and a first coil conductor laminated next is larger than a distance in the lamination direction between a second lead-out conductor laminated last and a second coil conductor laminated immediately before the second lead-out conductor.Type: ApplicationFiled: September 26, 2023Publication date: April 18, 2024Applicant: TDK CORPORATIONInventors: Yuya OSHIMA, Junichi OTSUKA, Yohei TADAKI, Shinichi KONDO, Koki ITO, Yoji TOZAWA, Shigeshi OSAWA, Tsubasa OZAWA, Makoto YOSHINO
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Publication number: 20240120142Abstract: The electronic component includes an element body, an internal conductor, a cover layer, and a conductor layer. The internal conductor is disposed in the element body. The cover layer is disposed on an outer surface of the element body and has an electrical insulation property. The conductor layer is disposed on the cover layer and is electrically connected to the internal conductor. The conductor layer includes a portion. The portion protrudes toward the element body through the cover layer and is physically and electrically connected to the internal conductor. The conductor layer is electrically connected to the internal conductor.Type: ApplicationFiled: October 4, 2023Publication date: April 11, 2024Applicant: TDK CORPORATIONInventors: Yoji TOZAWA, Masashi SHIMOYASU, Akihiko OIDE, Daiki KATO, Makoto YOSHINO, Takashi ENDO, Takuya KODAMA, Akira AKASAKA, Ken ITOH
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Patent number: 11894195Abstract: An electronic component includes an element body, an external electrode, and a resin film having electrical insulation properties. The element body includes a principal surface and a side surface adjacent to the principal surface. The external electrode includes a first electrode portion disposed on the principal surface and a second electrode portion disposed on the side surface. The resin film is disposed on the principal surface and is in contact with the principal surface. Each of the first electrode portion and the second electrode portion includes a conductive resin layer disposed on the element body. A conductive resin layer included in the first electrode portion is disposed on the resin film and is in contact with the resin film.Type: GrantFiled: November 8, 2021Date of Patent: February 6, 2024Assignee: TDK CORPORATIONInventors: Yoji Tozawa, Masashi Shimoyasu, Makoto Yoshino, Takuo Abe, Akihiko Oide, Tsutomu Ono, Shinichi Sato, Makoto Morita, Shinichi Sato, Hidekazu Sato
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Publication number: 20230317351Abstract: An electronic component has an element body; and an external electrode having a main body portion covering at least the second surface and a first wrapping-around portion wrapping around the third surface in the element body. The wrapping-around portion of the external electrode has a first part having a first distance, a second part having a second distance, a third part having a third distance, a fourth part having a fourth distance, and a fifth part having a fifth distance in the second direction in order from one side to the other side in the first direction. The second distance is longer than the first distance and the third distance. The fourth distance is longer than the third distance and the fifth distance.Type: ApplicationFiled: March 23, 2023Publication date: October 5, 2023Applicant: TDK CORPORATIONInventors: Masashi SHIMOYASU, Yoji TOZAWA, Akihiko OIDE, Daiki KATO, Midori KISHIMOTO, Satoshi TAKASU, Yo SAITO, Rui TAKAHASHI, Kenta SASAKI, Makoto YOSHINO, Kazuhiro EBINA
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Patent number: 11631521Abstract: An electronic component includes an element body and an external electrode disposed on the element body. The external electrode includes an underlying metal layer, a conductive resin layer, and a plating layer. The underlying metal layer is disposed on the element body. The conductive resin layer contains a plurality of conductive fillers and is disposed on the underlying metal layer. The plating layer is disposed on the conductive resin layer. A part of the plurality of conductive fillers is sintered with the underlying metal layer and is coupled to the underlying metal layer. Another part of the plurality of conductive fillers is exposed to a surface of the conductive resin layer and is in contact with the plating layer.Type: GrantFiled: April 29, 2019Date of Patent: April 18, 2023Assignee: TDK CORPORATIONInventors: Yoji Tozawa, Takuo Abe, Yuma Ishikawa, Hidekazu Sato, Takashi Endo, Masashi Shimoyasu, Kazuma Takahashi
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Patent number: 11482365Abstract: A multilayer coil component 1 includes an element body 2 having a plurality of stacked insulator layers 6 and having an outer surface provided with recessed portions 7 and 8, a coil 9 disposed in the element body 2, and terminal electrodes 4 and 5 connected to the coil 9 and disposed in the recessed portions 7 and 8. The recessed portions 7 and 8 are defined by a bottom surface and a side surface extending in a depth direction of the recessed portions 7 and 8 over the outer surface and the bottom surface, the terminal electrodes 4 and 5 have a first surface facing the bottom surface and a second surface facing the side surface, and a connection region A where a compound of elements constituting the element body 2 and a metal component are mixed is exposed to the second surface.Type: GrantFiled: April 21, 2020Date of Patent: October 25, 2022Assignee: TDK CORPORATIONInventors: Yuto Shiga, Yoji Tozawa, Masaki Takahashi, Takashi Endo, Hajime Kato
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Publication number: 20220068565Abstract: An electronic component includes an element body, an external electrode, and a resin film having electrical insulation properties. The element body includes a principal surface and a side surface adjacent to the principal surface. The external electrode includes a first electrode portion disposed on the principal surface and a second electrode portion disposed on the side surface. The resin film is disposed on the principal surface and is in contact with the principal surface. Each of the first electrode portion and the second electrode portion includes a conductive resin layer disposed on the element body. A conductive resin layer included in the first electrode portion is disposed on the resin film and is in contact with the resin film.Type: ApplicationFiled: November 8, 2021Publication date: March 3, 2022Applicant: TDK CORPORATIONInventors: Yoji TOZAWA, Masashi SHIMOYASU, Makoto YOSHINO, Takuo ABE, Akihiko OIDE, Tsutomu ONO, Shinichi SATO, Makoto MORITA, Shinichi SATO, Hidekazu SATO
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Patent number: 11227721Abstract: An electronic component includes an element body, an external electrode, and a resin film having electrical insulation properties. The element body includes a principal surface and a side surface adjacent to the principal surface. The external electrode includes a first electrode portion disposed on the principal surface and a second electrode portion disposed on the side surface. The resin film is disposed on the principal surface and is in contact with the principal surface. Each of the first electrode portion and the second electrode portion includes a conductive resin layer disposed on the element body. A conductive resin layer included in the first electrode portion is disposed on the resin film and is in contact with the resin film.Type: GrantFiled: November 24, 2017Date of Patent: January 18, 2022Assignee: TDK CORPORATIONInventors: Yoji Tozawa, Masashi Shimoyasu, Makoto Yoshino, Takuo Abe, Akihiko Oide, Tsutomu Ono, Shinichi Sato, Makoto Morita, Shinichi Sato, Hidekazu Sato, Masashi Kitazaki, Naoki Uchida, Masahiro Kato
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Publication number: 20210383960Abstract: A multilayer conductor component includes an element body, an internal conductor, and an external electrode. The external electrode includes a sintered metal layer. The sintered metal layer is disposed on an end surface, a pair of side surfaces, a first main surface, and a second main surface of the element body. An electrode length, which is a length in the first direction from an edge of the sintered metal layer to a reference plane including the end surface, at a central portion of the first main surface in the third direction, is shorter than the electrode length at each of the ridge portions. The electrode length at a central portion of each of the pair of side surfaces in the second direction is equal to or less than the electrode length at each of the ridge portions.Type: ApplicationFiled: June 3, 2021Publication date: December 9, 2021Applicant: TDK CORPORATIONInventors: Daiki KATO, Masashi SHIMOYASU, Yoji TOZAWA, Seiichi NAKAGAWA, Akihiko OIDE, Makoto YOSHINO, Kazuhiro EBINA
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Publication number: 20210375527Abstract: A multilayer inductor component includes an element body, an internal conductor, and an external electrode. The internal conductor is disposed in the element body. The external electrode is disposed on a surface of the element body and electrically connected to the internal conductor. The external electrode includes a sintered metal layer and a plating layer. The sintered metal layer is disposed on the surface of the element body. The plating layer covers the sintered metal layer. The sintered metal layer includes a thick portion and thin portions. The thick portion covers the surface of the element body. A plurality of glass particles is dispersed in the thick portion. The thin portions cover glass particles exposed on a surface of the thick portion among the plurality of glass particles and being in contact with the plating layer.Type: ApplicationFiled: May 25, 2021Publication date: December 2, 2021Applicant: TDK CORPORATIONInventors: Masashi SHIMOYASU, Daiki KATO, Yoji TOZAWA, Takashi ENDO, Seiichi NAKAGAWA, Mitsuru ITO, Kenta SASAKI, Akihiko OIDE, Makoto YOSHINO, Kazuhiro EBINA
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Patent number: 11127529Abstract: A method of manufacturing a laminated coil component is a method of manufacturing a laminated coil component provided with a laminate obtained by laminating a coil conductor forming a spiral coil and an insulator layer. The method of manufacturing a laminated coil component includes a step of providing a conductor pattern configured to become a coil conductor on a green sheet configured to become an insulator layer, and a step of laminating a plurality of green sheets provided with the conductor pattern. The conductor pattern includes a pair of first side surfaces opposed to each other in an orthogonal direction orthogonal to a laminating direction of the green sheet. At the step of laminating a plurality of green sheets, a depression is formed on at least one of the pair of first side surfaces.Type: GrantFiled: April 8, 2020Date of Patent: September 21, 2021Assignee: TDK CORPORATIONInventors: Yuya Oshima, Makoto Yoshino, Yoji Tozawa, Junichi Otsuka, Kazuo Iwai, Yohei Tadaki, Shinichi Kondo, Kazuhiro Ebina, Mamoru Kawauchi
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Patent number: 10848119Abstract: An element body includes a first function portion including a first material, a second function portion including a second material different from the first material, and an intermediate portion placed between the first function portion and the second function portion. The intermediate portion includes a first component included in the first material, and a second component included in the second material. A side surface of the element body includes surfaces of the first function portion, the second function portion, and the intermediate portion. Each of terminal electrodes includes electrode portion formed on the side surface across the surfaces of the first function portion, the second function portion, and the intermediate portion. An insulating layer is formed on the side surface in such a manner as to be in contact with at least a region exposed from the electrode portions between the electrode portions in the surface of the intermediate portion.Type: GrantFiled: October 15, 2018Date of Patent: November 24, 2020Assignee: TDK CORPORATIONInventors: Akihiko Oide, Yoji Tozawa, Seiichi Nakagawa, Shinichi Kondo, Takashi Endo, Makoto Yoshino, Noriaki Hamachi
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Publication number: 20200357557Abstract: A multilayer coil component 1 includes an element body 2 having a plurality of stacked insulator layers 6 and having an outer surface provided with recessed portions 7 and 8, a coil 9 disposed in the element body 2, and terminal electrodes 4 and 5 connected to the coil 9 and disposed in the recessed portions 7 and 8. The recessed portions 7 and 8 are defined by a bottom surface and a side surface extending in a depth direction of the recessed portions 7 and 8 over the outer surface and the bottom surface, the terminal electrodes 4 and 5 have a first surface facing the bottom surface and a second surface facing the side surface, and a connection region A where a compound of elements constituting the element body 2 and a metal component are mixed is exposed to the second surface.Type: ApplicationFiled: April 21, 2020Publication date: November 12, 2020Applicant: TDK CORPORATIONInventors: Yuto SHIGA, Yoji TOZAWA, Masaki TAKAHASHI, Takashi ENDO, Hajime KATO
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Patent number: 10784834Abstract: A multilayer LC filter array includes an element body of a rectangular parallelepiped shape, a first filter including a first inductor and a first capacitor, a second filter including a second inductor and a second capacitor, a first input terminal electrode and a first output terminal electrode that are connected to the first inductor, a second input terminal electrode and a second output terminal electrode that are connected to the second inductor, and a ground terminal electrode that is connected to the first capacitor and the second capacitor. The element body includes a principal surface. The ground terminal electrode is disposed at a center of the principal surface. The first input terminal electrode, the first output terminal electrode, the second input terminal electrode, and the second output terminal electrode are disposed at respective different corner portions of the element body when viewed from a direction orthogonal to the principal surface.Type: GrantFiled: August 21, 2017Date of Patent: September 22, 2020Assignee: TDK CORPORATIONInventors: Akihiko Oide, Naoki Uchida, Yoji Tozawa, Makoto Yoshino, Seiichi Nakagawa, Shinichi Sato, Hiroshi Ono, Takashi Endo
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Publication number: 20200234877Abstract: A method of manufacturing a laminated coil component is a method of manufacturing a laminated coil component provided with a laminate obtained by laminating a coil conductor forming a spiral coil and an insulator layer. The method of manufacturing a laminated coil component includes a step of providing a conductor pattern configured to become a coil conductor on a green sheet configured to become an insulator layer, and a step of laminating a plurality of green sheets provided with the conductor pattern. The conductor pattern includes a pair of first side surfaces opposed to each other in an orthogonal direction orthogonal to a laminating direction of the green sheet. At the step of laminating a plurality of green sheets, a depression is formed on at least one of the pair of first side surfaces.Type: ApplicationFiled: April 8, 2020Publication date: July 23, 2020Applicant: TDK CORPORATIONInventors: Yuya OSHIMA, Makoto YOSHINO, Yoji TOZAWA, Junichi OTSUKA, Kazuo IWAI, Yohei TADAKI, Shinichi KONDO, Kazuhiro EBINA, Mamoru KAWAUCHI
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Patent number: 10665388Abstract: A method of manufacturing a laminated coil component is a method of manufacturing a laminated coil component provided with a laminate obtained by laminating a coil conductor forming a spiral coil and an insulator layer. The method of manufacturing a laminated coil component includes a step of providing a conductor pattern configured to become a coil conductor on a green sheet configured to become an insulator layer, and a step of laminating a plurality of green sheets provided with the conductor pattern. The conductor pattern includes a pair of first side surfaces opposed to each other in an orthogonal direction orthogonal to a laminating direction of the green sheet. At the step of laminating a plurality of green sheets, a depression is formed on at least one of the pair of first side surfaces.Type: GrantFiled: October 4, 2017Date of Patent: May 26, 2020Assignee: TDK CORPORATIONInventors: Yuya Oshima, Makoto Yoshino, Yoji Tozawa, Junichi Otsuka, Kazuo Iwai, Yohei Tadaki, Shinichi Kondo, Kazuhiro Ebina, Mamoru Kawauchi
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Patent number: 10614946Abstract: An electronic component includes a body and a pair of terminal electrodes. The body has a pair of end faces opposing each other in a first direction, a pair of main faces opposing each other in a second direction, and a pair of side faces opposing each other in a third direction. One of the main faces serves as a mounting face. A clearance in the first direction between an end edge of a conductive resin layer and the end edge of a base metal layer at an end portion of the one of the main faces in the third direction is longer than a clearance in the first direction between the end edge of the conductive resin layer and the end edge of the base metal layer at a central portion of the one of the main faces in the third direction.Type: GrantFiled: November 15, 2017Date of Patent: April 7, 2020Assignee: TDK CORPORATIONInventors: Yoji Tozawa, Masashi Shimoyasu, Junichi Otsuka, Tsutomu Ono, Hidekazu Sato