Patents by Inventor Takehisa TAMURA

Takehisa TAMURA 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).

  • Patent number: 10763042
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. A first length of the element body in the first direction is different from a second length of the element body in the second direction. The external electrode includes a conductive resin layer. The conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: September 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Shinya Onodera, Takehisa Tamura, Atsushi Takeda, Ken Morita
  • Patent number: 10755859
    Abstract: An element body of a rectangular parallelepiped shape includes a pair of principal surfaces opposing each other in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode disposed on an end portion of the element body in the third direction. When viewed from the third direction, a width of the element body in the second direction is the largest at a central position in the first direction, and gradually decreases from the central portion in the first direction. When viewed from the third direction, a position in which a length from one end to another end of the conductive resin layer in the second direction is the largest is located closer to the one principal surface than the central position.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: August 25, 2020
    Assignee: TDK CORPORATION
    Inventors: Shinya Onodera, Takehisa Tamura, Ken Morita, Atsushi Takeda
  • Publication number: 20200251283
    Abstract: An electronic component includes an element body including a plurality of side surfaces adjacent to each other, and an external electrode disposed on the plurality of side surfaces. The external electrode includes a conductive resin layer in which a plurality of gaps exists and a plating layer disposed on the conductive resin layer. A clearance communicating with the plurality of gaps exists between an end edge of the plating layer and the element body. The conductive resin layer includes a first portion located on one side surface of the plurality of side surfaces and a second portion located on another side surface of the plurality of side surfaces. An existence ratio of the gaps in the first portion is greater than an existence ratio of the gaps in the second portion.
    Type: Application
    Filed: January 23, 2020
    Publication date: August 6, 2020
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Ken MORITA
  • Publication number: 20200211775
    Abstract: An electronic component includes an element body and an external electrode disposed on the element body. The external electrode includes a conductive resin layer, a solder plating layer arranged to constitute an outermost layer of the external electrode, and an intermediate plating layer disposed between the conductive resin layer and the solder plating layer. The intermediate plating layer has better solder leach resistance than metal contained in the conductive resin layer. An opening is formed in the intermediate plating layer. The solder plating layer is formed on the conductive resin layer through the opening.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Yuichi NAGAI
  • Publication number: 20200211774
    Abstract: An electronic component includes an element body and an external electrode disposed on the element body. The external electrode includes a sintered metal layer, a conductive resin layer disposed on the sintered metal layer, and a solder plating layer arranged to constitute an outermost layer of the external electrode. A space exists in the conductive resin layer or between the conductive resin layer and the sintered metal layer. A first maximum length of the space in a thickness direction of the conductive resin layer is shorter than a second maximum length of the space in a direction orthogonal to the thickness direction of the conductive resin layer.
    Type: Application
    Filed: December 23, 2019
    Publication date: July 2, 2020
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Yuichi NAGAI
  • Patent number: 10622150
    Abstract: An element body of a rectangular parallelepiped shape includes first and second principal surfaces opposing each other in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode disposed at an end portion of the element body in the third direction. The external electrode includes a first conductive resin layer and a second conductive resin layer. The first conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces. The second conductive resin layer is separated from the first conductive resin layer, and continuously covers one part of the second principal surface, one part of the end surface, and one part of each of the pair of side surfaces.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: April 14, 2020
    Assignee: TDK CORPORATION
    Inventors: Shinya Onodera, Takehisa Tamura, Atsushi Takeda, Ken Morita
  • Patent number: 10600570
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. The external electrode includes a conductive resin layer. The external electrode includes a plating layer including a first portion covering the first principal surface and a pair of second portions covering the pair of side surfaces. A thickness of the first portion is smaller than each thickness of the pair of second portions.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 24, 2020
    Assignee: TDK CORPORATION
    Inventors: Shinya Onodera, Takehisa Tamura, Atsushi Takeda, Ken Morita
  • Patent number: 10573461
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. The external electrode includes a conductive resin layer. The conductive resin layer covers a region near the first principal surface of the end surface. A height of the conductive resin layer in the first direction is larger at an end portion in the second direction than at a center in the second direction, when viewed from the third direction.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: February 25, 2020
    Assignee: TDK CORPORATION
    Inventors: Shinya Onodera, Takehisa Tamura, Atsushi Takeda, Ken Morita
  • Publication number: 20190341191
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed on the element body. The external electrode includes a conductive resin layer. The conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces. A length of the conductive resin layer in the first direction is smaller than a length of the conductive resin layer in the third direction.
    Type: Application
    Filed: July 18, 2019
    Publication date: November 7, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Ken MORITA
  • Publication number: 20190237261
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed on the element body. The external electrode includes a conductive resin layer. The conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces. A length of the conductive resin layer in the first direction is smaller than a length of the conductive resin layer in the third direction.
    Type: Application
    Filed: January 17, 2019
    Publication date: August 1, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Ken MORITA
  • Publication number: 20190237250
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed on the element body. The external electrode includes a conductive resin layer. The conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces. A length of the conductive resin layer in the third direction is smaller than a length of the conductive resin layer in the first direction.
    Type: Application
    Filed: January 17, 2019
    Publication date: August 1, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Ken MORITA
  • Publication number: 20190237259
    Abstract: An element body of a rectangular parallelepiped shape includes a principal surface arranged to constitute a mounting surface, a pair of side surfaces opposing each other and adjacent to the principal surface, and a pair of end surfaces opposing each other and adjacent to the principal surface and the pair of side surfaces. An external electrode includes a sintered metal layer disposed on an end portion of the element body, and a conductive resin layer including a portion positioned on the principal surface and a portion positioned on the sintered metal layer. An end edge of the sintered metal layer is positioned closer to the end surface than a maximum thickness position of the portion positioned on the principal surface. A thickness of the conductive resin layer gradually decreases from the maximum thickness position to the portion positioned on the sintered metal layer.
    Type: Application
    Filed: January 17, 2019
    Publication date: August 1, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Ken MORITA
  • Publication number: 20190164696
    Abstract: An element body of a rectangular parallelepiped shape includes a pair of principal surfaces opposing each other in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode disposed on an end portion of the element body in the third direction. When viewed from the third direction, a width of the element body in the second direction is the largest at a central position in the first direction, and gradually decreases from the central portion in the first direction. When viewed from the third direction, a position in which a length from one end to another end of the conductive resin layer in the second direction is the largest is located closer to the one principal surface than the central position.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 30, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Ken MORITA, Atsushi TAKEDA
  • Patent number: 10297390
    Abstract: An element body includes first and second end surfaces opposing each other in a first direction, first and second side surfaces opposing each other in a second direction, and first and second principal surfaces opposing each other in a third direction. The length of the element body in the third direction is shorter than that of the element body in the first direction and is shorter than that of the element body in the second direction. A pair of first external electrodes is disposed at both ends of the element body in the first direction. Each of the first external electrodes includes a first conductor part disposed on one main surface and a second conductor part disposed on the end surface and coupled to the first conductor part. The porosity of the first conductor part is smaller than that of the second conductor part.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: May 21, 2019
    Assignee: TDK CORPORATION
    Inventors: Fumiaki Satoh, Takehisa Tamura, Yuma Hattori, Toru Onoue, Daisuke Himeta, Ken Morita, Takuto Okamoto
  • Publication number: 20190131073
    Abstract: An element body of a rectangular parallelepiped shape includes first and second principal surfaces opposing each other in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode disposed at an end portion of the element body in the third direction. The external electrode includes a first conductive resin layer and a second conductive resin layer. The first conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces. The second conductive resin layer is separated from the first conductive resin layer, and continuously covers one part of the second principal surface, one part of the end surface, and one part of each of the pair of side surfaces.
    Type: Application
    Filed: October 22, 2018
    Publication date: May 2, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Ken MORITA
  • Publication number: 20190131070
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. The external electrode includes a conductive resin layer. The external electrode includes a plating layer including a first portion covering the first principal surface and a pair of second portions covering the pair of side surfaces. A thickness of the first portion is smaller than each thickness of the pair of second portions.
    Type: Application
    Filed: October 22, 2018
    Publication date: May 2, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Ken MORITA
  • Publication number: 20190131072
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. A first length of the element body in the first direction is different from a second length of the element body in the second direction. The external electrode includes a conductive resin layer. The conductive resin layer continuously covers one part of the first principal surface, one part of the end surface, and one part of each of the pair of side surfaces.
    Type: Application
    Filed: October 22, 2018
    Publication date: May 2, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Ken MORITA
  • Publication number: 20190096576
    Abstract: An element body of a rectangular parallelepiped shape includes a first principle surface arranged to constitute a mounting surface, a second principle surface opposing the first principle surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. The external electrode includes a conductive resin layer formed on the end surface. A thickness of the conductive resin layer gradually increases from the second principle surface toward the first principle surface in the first direction. The conductive resin layer includes a thickest portion at a position near the first principle surface in the first direction.
    Type: Application
    Filed: September 26, 2018
    Publication date: March 28, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Ken MORITA
  • Publication number: 20190080845
    Abstract: An element body of a rectangular parallelepiped shape includes a first principal surface arranged to constitute a mounting surface, a second principal surface opposing the first principal surface in a first direction, a pair of side surfaces opposing each other in a second direction, and a pair of end surfaces opposing each other in a third direction. An external electrode is disposed at an end portion of the element body in the third direction. The external electrode includes a conductive resin layer. The conductive resin layer covers a region near the first principal surface of the end surface. A height of the conductive resin layer in the first direction is larger at an end portion in the second direction than at a center in the second direction, when viewed from the third direction.
    Type: Application
    Filed: August 31, 2018
    Publication date: March 14, 2019
    Applicant: TDK CORPORATION
    Inventors: Shinya ONODERA, Takehisa TAMURA, Atsushi TAKEDA, Ken MORITA
  • Patent number: 9984822
    Abstract: An element body includes a first principal surface and a second principal surface opposing each other in a first direction. A first terminal electrode is disposed on the first principal surface side of the element body. A second terminal electrode is disposed on the second principal surface side of the element body. The first terminal electrode includes a first sintered metal layer formed on the first principal surface; and a first plating layer formed on the first sintered metal layer and including base metal. The second terminal electrode includes a second sintered metal layer formed on the second principal surface, a second plating layer formed on the second sintered metal layer and including base metal, and a solder layer formed on the second plating layer and including Sn and a metal having a higher melting point than the melting point of Sn.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: May 29, 2018
    Assignee: TDK CORPORATION
    Inventors: Masahiro Iwama, Takehisa Tamura, Atsushi Sato, Tomonori Oi