Patents by Inventor Kazuharu YOSHIDA

Kazuharu YOSHIDA 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).

  • Seal ring, electronic component housing package, electronic device, and manufacturing methods thereof
    Patent number: 10615090
    Abstract: An object of the present invention is to provide a seal ring having a metal brazing material layer on one surface of a base material containing KOVAR and a metal plating layer on the other surface, ensuring that the seal ring can prevent generation of a stain on the surface of a metal plating layer and excellent airtightness of an electronic component housing package can be achieved. The present invention has attained the object above by a seal ring which is an annular sealing ring having a nickel layer on the first surface of a base material containing KOVAR (iron-nickel-cobalt alloy) and a metal brazing material layer on the second surface opposite the first surface, wherein the thickness of the nickel layer is from 0.1 to 20 ?m.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: April 7, 2020
    Assignees: TANAKA KIKINZOKU KOGYO K.K., KYOCERA CORPORATION
    Inventors: Harumi Takeoka, Kazuharu Yoshida, Ryuta Ido, Junichi Takeuchi
  • PACKAGE FOR ELECTRONIC COMPONENT STORAGE, ELECRONIC DEVICE, AND MANUFACTURING METHOD THEREOF
    Publication number: 20180374767
    Abstract: An object of the present invention is to provide a seal ring having a metal brazing material layer on one surface of a base material containing KOVAR and a metal plating layer on the other surface, ensuring that the seal ring can prevent generation of a stain on the surface of a metal plating layer and excellent airtightness of an electronic component housing package can be achieved. The present invention has attained the object above by a seal ring which is an annular sealing ring having a nickel layer on the first surface of a base material containing KOVAR (iron-nickel-cobalt alloy) and a metal brazing material layer on the second surface opposite the first surface, wherein the thickness of the nickel layer is from 0.1 to 20 ?m.
    Type: Application
    Filed: December 19, 2016
    Publication date: December 27, 2018
    Applicants: TANAKA KIKINZOKU KOGYO K.K., KYOCERA CORPORATION
    Inventors: Harumi TAKEOKA, Kazuharu YOSHIDA, Ryuta IDO, Junichi TAKEUCHI