Patents by Inventor Yasuyuki Satoh

Yasuyuki Satoh 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: 20220278266
    Abstract: A laminated piezoelectric element has excellent suppression effect on characteristics deterioration caused by a pyroelectric effect. Inside an element main body are a first internal electrode, a piezoelectric layer, and a second internal electrode that has different polarity from the first internal electrode, which are repeatedly layered a plurality of times along the lamination direction. A first external electrode is formed on a first side surface of the element main body. A second external electrode is formed on a second side surface of the element main body. A resistance layer connected to the internal electrodes is formed in at least part of a third side surface of the element main body in which the internal electrodes are exposed. An insulating layer is formed on a third side of the element main body so as to cover the resistance layer.
    Type: Application
    Filed: October 7, 2020
    Publication date: September 1, 2022
    Applicant: TDK CORPORATION
    Inventors: Satoshi MIYAZAKI, Yasuyuki SATOH, Keiji OGUCHI
  • Publication number: 20220209099
    Abstract: A piezoelectric element includes a laminate and a first internal electrode. The laminate includes a pair of main faces, a pair of end faces, and a pair of side faces. The first internal electrode includes four electrode portions and a connector. The four electrode portions include a first pair of electrode portions and a second pair of electrode portions. The connector connects the first pair of electrode portions. The connector is spaced apart from each of the second pair of electrode portions by a first distance. Each of the four electrode portions includes a main electrode part. The main electrode part is spaced apart from the pair of end faces by a second distance. The main electrode part is spaced apart from the pair of side faces by a third distance. The first distance is longer than each of the second distance and the third distance.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 30, 2022
    Applicant: TDK CORPORATION
    Inventors: Keiji OGUCHI, Yasuyuki SATOH, Satoshi SASAKI
  • Publication number: 20220209097
    Abstract: A piezoelectric element includes a laminate, a plurality of internal electrodes, and a plurality of external electrodes. The laminate includes a plurality of piezoelectric layers that is laminated. The laminate includes a pair of main faces facing away from each other in a laminating direction of the plurality of piezoelectric layers, a pair of end faces facing away from each other in a first direction crossing the laminating direction, and a pair of side faces facing away from each other in a second direction crossing the laminating direction and the first direction. The plurality of internal electrodes is disposed in the laminate to be laminated in the laminating direction. Each of the pair of main faces, the pair of end faces, and the pair of side faces is a polished surface that is polished. Each ridge portion of the laminate has a rounded chamfered shape.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 30, 2022
    Applicant: TDK CORPORATION
    Inventors: Keiji OGUCHI, Yasuyuki SATOH, Satoshi SASAKI
  • Patent number: 11108340
    Abstract: A piezoelectric actuator (1) includes: a piezoelectric element (3); and a first frictional portion (10) and a second frictional portion (12) that are disposed on one principal surface (2d) of the piezoelectric element (3). The first frictional portion (10) is disposed at a position other than the antinodes of the piezoelectric element (3) at which a distance from one of the end surfaces (2a) is less than ? L, where L represents a length in the longitudinal direction of the piezoelectric element (3). The second frictional portion (12) is disposed at a position other than the antinodes of the piezoelectric element (3) at which a distance from the other of the end surfaces (2b) is less than ? L.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: August 31, 2021
    Assignee: TDK CORPORATION
    Inventors: Yasuyuki Satoh, Katsumi Yamauchi, Katsuya Inaba, Yoko Abe
  • Publication number: 20180219494
    Abstract: A piezoelectric actuator (1) includes: a piezoelectric element (3); and a first frictional portion (10) and a second frictional portion (12) that are disposed on one principal surface (2d) of the piezoelectric element (3). The first frictional portion (10) is disposed at a position other than the antinodes of the piezoelectric element (3) at which a distance from one of the end surfaces (2a) is less than ? L, where L represents a length in the longitudinal direction of the piezoelectric element (3). The second frictional portion (12) is disposed at a position other than the antinodes of the piezoelectric element (3) at which a distance from the other of the end surfaces (2b) is less than ? L.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 2, 2018
    Applicant: TDK CORPORATION
    Inventors: Yasuyuki SATOH, Katsumi YAMAUCHI, Katsuya INABA, Yoko ABE
  • Patent number: 9450168
    Abstract: A multilayer piezoelectric device comprises a multilayer body and first and second outer electrodes. The multilayer body has base, first and second driving parts, and non-driving part. The driving parts and non-driving part extend from the base along stacking direction. The first driving part is closer to the non-driving part than the second driving part. Each driving part has first and second inner electrodes opposing each other in stacking direction. The base has a third inner electrode extending along a plane orthogonal to the stacking direction. The first outer electrode is connected to the first inner electrode. The second outer electrode is connected to the second and third inner electrodes. In the stacking direction, the overlap area of the third and second inner electrode of the first driving part is greater than the overlap area of the third and second inner electrode of the second driving part.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: September 20, 2016
    Assignee: TDK CORPORATION
    Inventors: Yasuyuki Satoh, Keisuke Itakura, Jun Sugawara
  • Publication number: 20150340589
    Abstract: A multilayer piezoelectric device comprises a multilayer body and first and second outer electrodes. The multilayer body has base, first and second driving parts, and non-driving part. The driving parts and non-driving part extend from the base along stacking direction. The first driving part is closer to the non-driving part than the second driving part. Each driving part has first and second inner electrodes opposing each other in stacking direction. The base has a third inner electrode extending along a plane orthogonal to the stacking direction. The first outer electrode is connected to the first inner electrode. The second outer electrode is connected to the second and third inner electrodes. In the stacking direction, the overlap area of the third and second inner electrode of the first driving part is greater than the overlap area of the third and second inner electrode of the second driving part.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 26, 2015
    Inventors: Yasuyuki SATOH, Keisuke ITAKURA, Jun SUGAWARA
  • Patent number: D500767
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: January 11, 2005
    Assignee: Brumby Corporation Limited
    Inventors: Masaaki Yoshikawa, Osamu Goto, Paul Fricker, Luca Guerciotti, Dimitri Bassis, Yasuyuki Satoh, Hironao Takahashi, Stephen Harris, Lester Harris, Alessandro Giussani, Urs Jann