Patents by Inventor Tomoyasu EGUCHI

Tomoyasu EGUCHI 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: 20240331945
    Abstract: A multilayer ceramic electronic device includes an element body and external electrodes. At least one of the pair of external electrodes includes a first metal layer and a second metal layer. The first metal layer covers a part of internal electrodes and a first portion of cover dielectric layers and side margin sections which is located on a side of the internal electrodes, does not cover a second portion of the cover dielectric layers and the side margin section which is other than the first portion, contacts a part of the internal electrodes, and has a main component of nickel or copper, at a corresponding end face of the element body. The second metal layer covers the first metal layer, contacts at least a part of the second portion on a side of the first metal layer, and has a main component of tin.
    Type: Application
    Filed: March 26, 2024
    Publication date: October 3, 2024
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Takashi ASAI, Yoichi KATO, Tomoyasu EGUCHI
  • Patent number: 11521798
    Abstract: A ceramic electronic device includes: a multilayer chip in which each of internal electrode layers and each of dielectric layers are alternately stacked, wherein the multilayer chip has a first capacity region having a first electrostatic capacity C1 and a first inductance L1 and a second capacity region having a second electrostatic capacity C2 and a second inductance L2, wherein the first electrostatic capacity C1, the first inductance L1, the second electrostatic capacity C2 and the second inductance L2 satisfy (C1·L1)/(C2·L2)<0.5 or 1.9<(C1·L1)/(C2·L2).
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: December 6, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hirotaka Ohno, Tomoyasu Eguchi, Kenichi Kitazawa, Ryuichi Shibasaki
  • Patent number: 11488781
    Abstract: A ceramic electronic device includes: a multilayer chip in which each of internal electrode layers and each of dielectric layers are alternately stacked, wherein the multilayer chip has a first capacity region having a first electrostatic capacity C1 and a first inductance L1 and a second capacity region having a second electrostatic capacity C2 and a second inductance L2, wherein the first electrostatic capacity C1, the first inductance L1, the second electrostatic capacity C2 and the second inductance L2 satisfy (C1·L1)/(C2·L2)<0.5 or 1.9<(C1·L1)/(C2·L2).
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: November 1, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hirotaka Ohno, Tomoyasu Eguchi, Kenichi Kitazawa, Ryuichi Shibasaki
  • Publication number: 20200194183
    Abstract: A ceramic electronic device includes: a multilayer chip in which each of internal electrode layers and each of dielectric layers are alternately stacked, wherein the multilayer chip has a first capacity region having a first electrostatic capacity C1 and a first inductance L1 and a second capacity region having a second electrostatic capacity C2 and a second inductance L2, wherein the first electrostatic capacity C1, the first inductance L1, the second electrostatic capacity C2 and the second inductance L2 satisfy (C1·L1)/(C2·L2)<0.5 or 1.9<(C1·L1)/(C2·L2).
    Type: Application
    Filed: December 2, 2019
    Publication date: June 18, 2020
    Inventors: Hirotaka OHNO, Tomoyasu EGUCHI, Kenichi KITAZAWA, Ryuichi SHIBASAKI