Patents by Inventor Yohei Tadaki

Yohei Tadaki 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).

  • Publication number: 20240128020
    Abstract: 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: Application
    Filed: September 26, 2023
    Publication date: April 18, 2024
    Applicant: TDK CORPORATION
    Inventors: Yuya OSHIMA, Junichi OTSUKA, Yohei TADAKI, Shinichi KONDO, Koki ITO, Yoji TOZAWA, Shigeshi OSAWA, Tsubasa OZAWA, Makoto YOSHINO
  • Publication number: 20230005656
    Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 5, 2023
    Applicant: TDK CORPORATION
    Inventors: Shinichi SATO, Yohei TADAKI, Akihiko OIDE, Yuma ISHIKAWA, Hidekazu SATO, Kazuhiro EBINA, Hiroyuki TANOUE
  • Patent number: 11482371
    Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: October 25, 2022
    Assignee: TDK CORPORATION
    Inventors: Shinichi Sato, Yohei Tadaki, Akihiko Oide, Yuma Ishikawa, Hidekazu Sato, Kazuhiro Ebina, Hiroyuki Tanoue
  • Publication number: 20220013278
    Abstract: A multilayer coil component includes an element body, first and second coils, and a pair of external electrodes. The element body includes a plurality of insulator layers laminated in a first direction. The element body has a pair of end surfaces opposing each other in a second direction orthogonal to the first direction. The first coil and the second coil are disposed in the element body and respectively have coil shafts along the second direction. The pair of external electrodes are disposed on the pair of end surfaces and electrically connected to both ends of the first coil and the second coil. The first coil includes a first conductor layer, a second conductor layer, and a first through hole conductor. The coil shaft of the first coil is disposed inside the second coil.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 13, 2022
    Applicant: TDK CORPORATION
    Inventors: Yuya OSHIMA, Junichi OTSUKA, Shinichi KONDO, Yohei TADAKI, Kazuo IWAI, Masayuki SUZUKI, Emiri MATSUHASHI, Takuya NIIBORI
  • Patent number: 11189413
    Abstract: First internal conductors are separated from each other in a first direction. Each of the first internal conductors includes a coil portion and a pad portion having a width larger than a width of the coil portion. The pad portions adjacent to each other in the first direction are connected to each other via a through-hole conductor and overlap each other when viewed from the first direction. When viewed from the first direction, each of the coil portions includes a first portion not overlapping the pad portion adjacent in the first direction and a second portion overlapping a part of the pad portion adjacent in the first direction. A second internal conductor is disposed on the same layer as the second portion and is positioned to overlap a portion of the pad portion adjacent in the first direction not overlapping the second portion when viewed from the first direction.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: November 30, 2021
    Assignee: TDK CORPORATION
    Inventors: Yuya Oshima, Shinichi Kondo, Junichi Otsuka, Yohei Tadaki, Kazuo Iwai, Masayuki Suzuki, Shigeshi Osawa, Kazuhiro Ebina, Makoto Yoshino, Mamoru Kawauchi
  • Patent number: 11127529
    Abstract: 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: Grant
    Filed: April 8, 2020
    Date of Patent: September 21, 2021
    Assignee: TDK CORPORATION
    Inventors: Yuya Oshima, Makoto Yoshino, Yoji Tozawa, Junichi Otsuka, Kazuo Iwai, Yohei Tadaki, Shinichi Kondo, Kazuhiro Ebina, Mamoru Kawauchi
  • Patent number: 11011294
    Abstract: A multilayer coil component includes an element body made of a ferrite sintered body and a coil. The coil is configured with a plurality of internal conductors juxtaposed in the element body and electrically connected to one another. An average crystal grain size in a surface region of the element body is smaller than an average crystal grain size in a region between the internal conductors in the element body. A surface of the element body is covered with a layer made of an insulating material. The insulating material is not present among the crystal grains in the surface region of the element body.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 18, 2021
    Assignee: TDK CORPORATION
    Inventors: Shinichi Sato, Yohei Tadaki, Akihiko Oide, Yuma Ishikawa, Hidekazu Sato
  • Publication number: 20200234877
    Abstract: 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: Application
    Filed: April 8, 2020
    Publication date: July 23, 2020
    Applicant: TDK CORPORATION
    Inventors: Yuya OSHIMA, Makoto YOSHINO, Yoji TOZAWA, Junichi OTSUKA, Kazuo IWAI, Yohei TADAKI, Shinichi KONDO, Kazuhiro EBINA, Mamoru KAWAUCHI
  • Patent number: 10665388
    Abstract: 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: Grant
    Filed: October 4, 2017
    Date of Patent: May 26, 2020
    Assignee: TDK CORPORATION
    Inventors: Yuya Oshima, Makoto Yoshino, Yoji Tozawa, Junichi Otsuka, Kazuo Iwai, Yohei Tadaki, Shinichi Kondo, Kazuhiro Ebina, Mamoru Kawauchi
  • Publication number: 20200118731
    Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 16, 2020
    Applicant: TDK CORPORATION
    Inventors: Shinichi SATO, Yohei TADAKI, Akihiko OIDE, Yuma ISHIKAWA, Hidekazu SATO, Kazuhiro EBINA, Hiroyuki TANOUE
  • Patent number: 10541078
    Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: January 21, 2020
    Assignee: TDK CORPORATION
    Inventors: Shinichi Sato, Yohei Tadaki, Akihiko Oide, Yuma Ishikawa, Hidekazu Sato, Kazuhiro Ebina, Hiroyuki Tanoue
  • Publication number: 20190122800
    Abstract: First internal conductors are separated from each other in a first direction. Each of the first internal conductors includes a coil portion and a pad portion having a width larger than a width of the coil portion. The pad portions adjacent to each other in the first direction are connected to each other via a through-hole conductor and overlap each other when viewed from the first direction. When viewed from the first direction, each of the coil portions includes a first portion not overlapping the pad portion adjacent in the first direction and a second portion overlapping a part of the pad portion adjacent in the first direction. A second internal conductor is disposed on the same layer as the second portion and is positioned to overlap a portion of the pad portion adjacent in the first direction not overlapping the second portion when viewed from the first direction.
    Type: Application
    Filed: October 12, 2018
    Publication date: April 25, 2019
    Applicant: TDK CORPORATION
    Inventors: Yuya OSHIMA, Shinichi KONDO, Junichi OTSUKA, Yohei TADAKI, Kazuo IWAI, Masayuki SUZUKI, Shigeshi OSAWA, Kazuhiro EBINA, Makoto YOSHINO, Mamoru KAWAUCHI
  • Publication number: 20180096789
    Abstract: 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: Application
    Filed: October 4, 2017
    Publication date: April 5, 2018
    Applicant: TDK CORPORATION
    Inventors: Yuya OSHIMA, Makoto YOSHINO, Yoji TOZAWA, Junichi OTSUKA, Kazuo IWAI, Yohei TADAKI, Shinichi KONDO, Kazuhiro EBINA, Mamoru KAWAUCHI
  • Publication number: 20170330673
    Abstract: A multilayer coil component includes an element body made of a ferrite sintered body and a coil. The coil is configured with a plurality of internal conductors juxtaposed in the element body and electrically connected to one another. An average crystal grain size in a surface region of the element body is smaller than an average crystal grain size in a region between the internal conductors in the element body. A surface of the element body is covered with a layer made of an insulating material. The insulating material is not present among the crystal grains in the surface region of the element body.
    Type: Application
    Filed: April 26, 2017
    Publication date: November 16, 2017
    Applicant: TDK CORPORATION
    Inventors: Shinichi SATO, Yohei TADAKI, Akihiko OIDE, Yuma ISHIKAWA, Hidekazu SATO
  • Publication number: 20170309389
    Abstract: An electronic component includes: an element body in which a plurality of insulator layers are stacked; a coil in which a plurality of inner conductors installed in the element body are electrically connected to each other; and an outer electrode that is disposed on an outer surface of the element body, is electrically connected to the coil, and includes at least a baked electrode layer. The inner conductor connected to the outer electrode includes a connection conductor that electrically connects the baked electrode layer to the inner conductor. The connection conductor includes a protruding portion that protrudes from the outer surface of the element body to the outer electrode. The protruding portion includes a metal having a smaller diffusion coefficient than a metal of a main component included in the baked electrode layer. The inner conductors have a lower electric resistance value than the metal included in the protruding portion.
    Type: Application
    Filed: April 17, 2017
    Publication date: October 26, 2017
    Applicant: TDK CORPORATION
    Inventors: Shinichi SATO, Yohei TADAKI, Akihiko OIDE, Yuma ISHIKAWA, Hidekazu SATO, Kazuhiro EBINA, Hiroyuki TANOUE
  • Patent number: 7579937
    Abstract: A laminated inductor, as well as a method of manufacturing such a laminated inductor, are provided. The laminated inductor includes: a laminate; a pair of external electrodes arranged on the outer surfaces of the laminate respectively; and a coil, arranged within the laminate and formed by electrically connecting a plurality of strip-like conductor patterns. The conductor patterns have: a pair of broad faces, intersecting the lamination direction and mutually opposing; and peripheral side faces adjacent to the pair of broad faces and extending in the lamination direction. The peripheral side faces are concavo-convex faces, in which concave portions and convex portions are arranged in alternation in the lamination direction. The laminate enters into the concave portions of the peripheral side faces.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: August 25, 2009
    Assignee: TDK Corporation
    Inventors: Masazumi Arata, Kunihiko Kawasaki, Kunio Oda, Yohei Tadaki, Yoshimitsu Satoh, Hitoshi Sasaki
  • Publication number: 20090115563
    Abstract: A laminated inductor, in which there is extremely little tendency for cracking to occur between adjacent conductor patterns in portions of a laminate in the lamination direction even when the conductor pattern thickness is large, as well as a method of manufacturing such a laminated inductor, are provided. A laminated inductor includes: a laminate; a pair of external electrodes arranged on the outer surfaces of the laminate respectively; and a coil, arranged within the laminate and formed by electrically connecting a plurality of strip-like conductor patterns. The conductor patterns have: a pair of broad faces, intersecting the lamination direction and mutually opposing; and peripheral side faces adjacent to the pair of broad faces and extending in the lamination direction. The peripheral side faces are concavo-convex faces, in which concave portions and convex portions are arranged in alternation in the lamination direction. The laminate enters into the concave portions of the peripheral side faces.
    Type: Application
    Filed: October 14, 2008
    Publication date: May 7, 2009
    Applicant: TDK Corporation
    Inventors: Masazumi ARATA, Kunihiko KAWASAKI, Kunio ODA, Yohei TADAKI, Yoshimitsu SATOH, Hitoshi SASAKI