Patents by Inventor Yasuhiro OKUI

Yasuhiro OKUI 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: 20260094768
    Abstract: An electronic component includes an element body and an external electrode. The external electrode is disposed on the element body, and includes a conductive resin layer and a plating layer formed on the conductive resin layer. The external electrode has a hole formed from a surface of the plating layer and reaching the conductive resin layer.
    Type: Application
    Filed: September 15, 2025
    Publication date: April 2, 2026
    Applicant: TDK Corporation
    Inventors: Kazuyuki Hasebe, Yuki Okafuji, Yasuhiro Okui, Ken Morita, Noriyuki Inoue
  • Publication number: 20260088230
    Abstract: An internal electrode includes a main electrode portion and a connection portion connecting the main electrode portion and an external electrode. The connection portion is narrower than the main electrode portion in a first direction and is exposed at a partial region of an end surface positioned closer to a first main surface. A sintered metal layer includes a first portion and a second portion. The first portion covers the partial region of the end surface and is connected to the connection portion. The second portion covers at least a partial region of the end surface positioned closer to a second main surface than the partial region. A conductive resin layer includes an end-surface-side portion positioned on the end surface to cover the first portion and expose the second portion. A plating layer covers the second portion and the end-surface-side portion.
    Type: Application
    Filed: September 12, 2025
    Publication date: March 26, 2026
    Applicant: TDK CORPORATION
    Inventors: Yugo KANAMOTO, Shunsuke SATO, Ken MORITA, Yasuhiro OKUI
  • Publication number: 20260031278
    Abstract: A dielectric ceramic electronic device includes a ceramic sintered body having a surface at least partly containing a dielectric. The surface of the ceramic sintered body has a base color with a chroma C* value in a range of 5 to 11 and a lightness L* value in a range of 38 to 50.
    Type: Application
    Filed: June 18, 2025
    Publication date: January 29, 2026
    Applicant: TDK CORPORATION
    Inventors: Tomoyuki TANABE, Atsushi WATANABE, Kazuhiro OKADA, Shizuku ITO, Yasuhiro OKUI, Toshihiro IGUCHI
  • Patent number: 12488942
    Abstract: An electronic component includes: an element body including first and second end surfaces opposing each other and a side surface coupling the first and second end surfaces; first and second internal conductors in the element body; a first external electrode on the first end surface; a second external electrode on the second end surface; and first and second external conductors on the side surface. The first and second external conductors are separated from the first and second external electrodes. The first internal conductor is electrically connected to the first external electrode and the first external conductor. The second internal conductor is electrically connected to the second external electrode and the second external conductor. The first external conductor is located between the first external electrode and the second external conductor. The second external conductor is located between the second external electrode and the first external conductor.
    Type: Grant
    Filed: November 29, 2023
    Date of Patent: December 2, 2025
    Assignee: TDK CORPORATION
    Inventors: Yuichi Nagai, Ken Morita, Kyohei Takata, Yasuhiro Okui, Yoshitaka Nagashima
  • Publication number: 20250308776
    Abstract: A multilayer ceramic electronic device includes dielectric layers and internal electrode layers. The dielectric layers and the internal electrode layers are being laminated. The internal electrode layers include a first internal electrode layer located farthest out along a lamination direction. The first internal electrode layer has a Mn concentration higher than that of other internal electrode layers.
    Type: Application
    Filed: March 11, 2025
    Publication date: October 2, 2025
    Applicant: TDK Corporation
    Inventors: Atsushi WATANABE, Tomoyuki TANABE, Kazuhiro OKADA, Shizuku ITO, Yasuhiro OKUI, Toshihiro IGUCHI
  • Publication number: 20250308780
    Abstract: A multilayer ceramic electronic device includes dielectric layers and internal electrode layers. The dielectric layers and the internal electrode layers are being laminated. The internal electrode layers include a first internal electrode layer located farthest out along a lamination direction. The dielectric layers include an external dielectric layer located outwards from the first internal electrode layer along the lamination direction. The external dielectric layer has a concentration gradient of Mn increasing from a vicinity of the first internal electrode layer outwards along the lamination direction.
    Type: Application
    Filed: March 10, 2025
    Publication date: October 2, 2025
    Applicant: TDK Corporation
    Inventors: Atsushi WATANABE, Tomoyuki Tanabe, Kazuhiro Okada, Shizuku Ito, Yasuhiro Okui, Toshihiro Iguchi
  • Publication number: 20250299886
    Abstract: An electronic component includes an element body, a first terminal electrode, a second terminal electrode, an external connection conductor, a first internal electrode, a second internal electrode, and a third internal electrode, in which a first capacitor portion formed by the first internal electrode and the third internal electrode facing each other and a second capacitor portion formed by the second internal electrode and the third internal electrode facing each other are connected in series with each other, and the third internal electrode has an opening portion in a region between the first internal electrode and the second internal electrode when viewed in the first direction.
    Type: Application
    Filed: February 24, 2025
    Publication date: September 25, 2025
    Applicant: TDK Corporation
    Inventors: Masato KIMURA, Yasuhiro Okui, Yoshitaka Nagashima, Shinya Saito, Anna Hashimoto, Hotaka Watanabe
  • Publication number: 20250273398
    Abstract: An electronic component includes: an element body; a first terminal electrode; a second terminal electrode; a first external connection conductor; a second external connection conductor; a first internal electrode; a second internal electrode; a third internal electrode; a fourth internal electrode; and a sixth internal electrode. A first capacitor portion formed by the first internal electrode and the third internal electrode facing each other and a second capacitor portion formed by the second internal electrode and the sixth internal electrode facing each other are connected in series through the first external connection conductor. A third capacitor portion formed by the first internal electrode and the fifth internal electrode facing each other and a fourth capacitor portion formed by the second internal electrode and the fourth internal electrode facing each other are connected in series through the second external connection conductor.
    Type: Application
    Filed: February 5, 2025
    Publication date: August 28, 2025
    Applicant: TDK Corporation
    Inventors: Masato KIMURA, Yasuhiro OKUI, Yoshitaka NAGASHIMA, Shinya SAITO, Anna HASHIMOTO, Hotaka WATANABE, Atsushi WATANABE
  • Patent number: 12322550
    Abstract: An electronic component includes: a first internal electrode provided in an element body; a second internal electrode provided in the element body; a third internal electrode provided in the element body and drawn out to a first side surface; and a fourth internal electrode provided in the element body and drawn out to a second side surface. The third internal electrode and the fourth internal electrode are electrically connected to each other through an external connection conductor formed on at least the first side surface and the second side surface. In a first direction, the first internal electrode faces the third internal electrode without facing the second internal electrode and the fourth internal electrode. In the first direction, the second internal electrode faces the fourth internal electrode without facing the first internal electrode and the third internal electrode.
    Type: Grant
    Filed: September 15, 2023
    Date of Patent: June 3, 2025
    Assignee: TDK CORPORATION
    Inventors: Atsushi Watanabe, Yasuhiro Okui, Yoshitaka Nagashima, Shinya Saito, Yasuo Watanabe
  • Publication number: 20250095921
    Abstract: An element body includes a main surface and a pair of end surfaces. Each external electrode includes a conductive resin layer on the main surface. Each auxiliary internal electrode is disposed in the same layer as a corresponding internal electrode of a plurality of internal electrodes and is electrically connected to the external electrode to which the corresponding internal electrode is not electrically connected. Each auxiliary internal electrode includes first and second electrode portions. The first electrode portion is exposed to a corresponding end surface of the pair of end surfaces and is electrically and physically connected to the external electrode to which the corresponding internal electrode is not electrically connected. The second electrode portion is positioned between the conductive resin layer of the external electrode to which the corresponding internal electrode is not electrically connected and the corresponding internal electrode.
    Type: Application
    Filed: July 17, 2024
    Publication date: March 20, 2025
    Applicant: TDK Corporation
    Inventors: Ken MORITA, Yasuhiro OKUI, Yuichi NAGAI, Kazuyuki HASEBE, Shinya ONODERA
  • Publication number: 20240258036
    Abstract: An electronic component includes: an element body including first and second end surfaces opposing each other and a side surface coupling the first and second end surfaces; first and second internal conductors in the element body; a first external electrode on the first end surface; a second external electrode on the second end surface; and first and second external conductors on the side surface. The first and second external conductors are separated from the first and second external electrodes. The first internal conductor is electrically connected to the first external electrode and the first external conductor. The second internal conductor is electrically connected to the second external electrode and the second external conductor. The first external conductor is located between the first external electrode and the second external conductor. The second external conductor is located between the second external electrode and the first external conductor.
    Type: Application
    Filed: November 29, 2023
    Publication date: August 1, 2024
    Applicant: TDK Corporation
    Inventors: Yuichi NAGAI, Ken Morita, Kyohei Takata, Yasuhiro Okui, Yoshitaka Nagashima
  • Patent number: 12014879
    Abstract: A multilayer electronic component includes a plurality of dielectric layers and a plurality of electrode layers that are alternately stacked. A skewness of a distribution of thicknesses of the plurality of dielectric layers at a plurality of arbitrary locations of the plurality of dielectric layers is 0.2 or more.
    Type: Grant
    Filed: September 6, 2022
    Date of Patent: June 18, 2024
    Assignee: TDK CORPORATION
    Inventors: Toshihiro Iguchi, Yoshitaka Nagashima, Yasuhiro Okui, Masahide Ishizuya, Yuuki Hidaka
  • Publication number: 20240112860
    Abstract: An electronic component includes: a first internal electrode which is provided inside an element body and is drawn on a first main surface corresponding to a mounting surface; a second internal electrode which is provided inside the element body, is provided at a position different from the first internal electrode when viewed from a third direction, and is drawn on the first main surface; a third internal electrode which is provided inside the element body, is provided at a position facing the first internal electrode and the second internal electrode in the third direction, and is drawn on the first main surface; wherein the first internal electrode and the third internal electrode face each other in the third direction to form a first capacitor portion, and wherein the second internal electrode and the third internal electrode face each other in the third direction to form a second capacitor portion.
    Type: Application
    Filed: September 12, 2023
    Publication date: April 4, 2024
    Applicant: TDK CORPORATION
    Inventors: Naoki HAYAKAWA, Yoshitaka NAGASHIMA, Yasuhiro OKUI, Shinya SAITO, Yasuo WATANABE
  • Publication number: 20240112863
    Abstract: An electronic component includes: a first internal electrode provided in an element body; a second internal electrode provided in the element body; a third internal electrode provided in the element body and drawn out to a first side surface; and a fourth internal electrode provided in the element body and drawn out to a second side surface. The third internal electrode and the fourth internal electrode are electrically connected to each other through an external connection conductor formed on at least the first side surface and the second side surface. In a first direction, the first internal electrode faces the third internal electrode without facing the second internal electrode and the fourth internal electrode. In the first direction, the second internal electrode faces the fourth internal electrode without facing the first internal electrode and the third internal electrode.
    Type: Application
    Filed: September 15, 2023
    Publication date: April 4, 2024
    Applicant: TDK CORPORATION
    Inventors: Atsushi WATANABE, Yasuhiro OKUI, Yoshitaka NAGASHIMA, Shinya SAITO, Yasuo WATANABE
  • Patent number: 11710599
    Abstract: A ceramic electronic device includes an element body and an external electrode. The element body is formed by laminating a ceramic layer and an internal electrode layer. The external electrode is electrically connected to at least one end of the internal electrode layer. The external electrode includes a baked electrode layer. The baked electrode layer includes a first region and a second region. The first region is contacted with an end surface of the element body and located near a joint boundary with the element body. The second region is located outside the first region and constituting an outer surface of the baked electrode layer. The first region includes a first glass having a predetermined composition. The second region includes a second glass having a predetermined composition.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: July 25, 2023
    Assignee: TDK CORPORATION
    Inventors: Toshihiro Iguchi, Yuichiro Sueda, Ryota Namiki, Yasuhiro Okui, Atsushi Watanabe
  • Publication number: 20230072034
    Abstract: A multilayer electronic component includes a plurality of dielectric layers and a plurality of electrode layers that are alternately stacked. A skewness of a distribution of thicknesses of the plurality of dielectric layers at a plurality of arbitrary locations of the plurality of dielectric layers is 0.2 or more.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 9, 2023
    Applicant: TDK CORPORATION
    Inventors: Toshihiro IGUCHI, Yoshitaka NAGASHIMA, Yasuhiro OKUI, Masahide ISHIZUYA, Yuuki HIDAKA
  • Publication number: 20220285095
    Abstract: A ceramic electronic device includes an element body and an external electrode. The element body is formed by laminating a ceramic layer and an internal electrode layer. The external electrode is electrically connected to at least one end of the internal electrode layer. The external electrode includes a baked electrode layer. The baked electrode layer includes a first region and a second region. The first region is contacted with an end surface of the element body and located near a joint boundary with the element body. The second region is located outside the first region and constituting an outer surface of the baked electrode layer. The first region includes a first glass having a predetermined composition. The second region includes a second glass having a predetermined composition.
    Type: Application
    Filed: March 2, 2022
    Publication date: September 8, 2022
    Applicant: TDK CORPORATION
    Inventors: Toshihiro IGUCHI, Yuichiro SUEDA, Ryota NAMIKI, Yasuhiro OKUI, Atsushi WATANABE
  • Patent number: 9305708
    Abstract: A multilayer ceramic electronic device comprising a lamination in which an internal electrode layer 3 and a dielectric layer 2 are laminated alternatively, wherein the dielectric layer 2 is comprised of a dielectric ceramic composition including a main component represented by a general formula of ABO3 and a rare-earth component R, and segregation phases 5 including the rare-earth component R are present in the dielectric layer 2. When the dielectric layer 2 is separated to six areas by dividing the dielectric layer 2 sandwiched by a pair of the internal dielectric layers 3 in the thickness direction, there are the R segregation phases present in two neighboring areas 2a respectively adjacent to the pair of the internal electrode layers 3 in the dielectric layer 3 at a ratio of double or more compared with the R segregation phases present in two central areas 2b located at a substantially center in the dielectric layer 2.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: April 5, 2016
    Assignee: TDK CORPORATION
    Inventors: Nobutaka Kai, Yasuhiro Okui, Satoru Kindaichi, Hideki Kaneko, Tatsuya Kojima, Akitoshi Yoshii
  • Publication number: 20150036262
    Abstract: A multilayer ceramic electronic device comprising a lamination in which an internal electrode layer 3 and a dielectric layer 2 are laminated alternatively, wherein the dielectric layer 2 is comprised of a dielectric ceramic composition including a main component represented by a general formula of ABO3 and a rare-earth component R, and segregation phases 5 including the rare-earth component R are present in the dielectric layer 2. When the dielectric layer 2 is separated to six areas by dividing the dielectric layer 2 sandwiched by a pair of the internal dielectric layers 3 in the thickness direction, there are the R segregation phases present in two neighboring areas 2a respectively adjacent to the pair of the internal electrode layers 3 in the dielectric layer 3 at a ratio of double or more compared with the R segregation phases present in two central areas 2b located at a substantially center in the dielectric layer 2.
    Type: Application
    Filed: July 29, 2014
    Publication date: February 5, 2015
    Inventors: Nobutaka KAI, Yasuhiro OKUI, Satoru KINDAICHI, Hideki KANEKO, Tatsuya KOJIMA, Akitoshi YOSHII