Patents by Inventor Keiji OGUCHI

Keiji OGUCHI 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: 20220261521
    Abstract: The invention provides a simulation method that predicts a behavior of a droplet of a curable composition in a process of bringing a plurality of droplets of the curable composition arranged on a first member into contact with a second member and forming a film made of the curable composition in a space between the first member and the second member, the method including obtaining, for each of the plurality of droplets of the curable composition, gas information, which includes at least the mole of a gas trapped in a closed region formed by adjacent droplets merging with each other, based on an evaluation value for evaluating a relationship related to a degree of merging between the adjacent droplets, and displaying the gas information, obtained in the obtaining, together with information indicating a state of the droplet corresponding to the gas information.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 18, 2022
    Inventors: Keiji Yamashita, Sentaro Aihara, Yuichiro Oguchi, Ken Katsuta
  • 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: 10686119
    Abstract: A piezoelectric device includes a body provided with a first region and a second region lined along a first direction. The first region deformably extends/contracts along the first direction. The second region deformably curves in such a manner that one or the other side in a second direction intersecting the first direction curves outward.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: June 16, 2020
    Assignee: TDK CORPORATION
    Inventors: Yoshiki Ohta, Masaichi Miyano, Keiji Oguchi
  • Publication number: 20170358733
    Abstract: A piezoelectric device includes a body provided with a first region and a second region lined along a first direction. The first region deformably extends/contracts along the first direction. The second region deformably curves in such a manner that one or the other side in a second direction intersecting the first direction curves outward.
    Type: Application
    Filed: June 7, 2017
    Publication date: December 14, 2017
    Applicant: TDK CORPORATION
    Inventors: Yoshiki OHTA, Masaichi MIYANO, Keiji OGUCHI
  • Patent number: 9735337
    Abstract: A piezoelectric actuator comprises a substantially rectangular parallelepiped piezoelectric element. One outer surface of the piezoelectric element includes a first region, and a second region located such as to project from the first region and to overlap a region corresponding to an active portion in the one outer surface. The second region has a flat surface configured to come into contact with a body to be driven and to generate a frictional force therewith. The flat surface is shorter in a longitudinal direction of the piezoelectric element than in a lateral direction thereof. The flat surface is longer in the longitudinal direction of the piezoelectric element at a lateral center region thereof than at a lateral end region thereof.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: August 15, 2017
    Assignee: TDK CORPORATION
    Inventors: Yoshiki Ikeda, Keiji Oguchi
  • Publication number: 20150028723
    Abstract: A piezoelectric actuator comprises a substantially rectangular parallelepiped piezoelectric element. One outer surface of the piezoelectric element includes a first region, and a second region located such as to project from the first region and to overlap a region corresponding to an active portion in the one outer surface. The second region has a flat surface configured to come into contact with a body to be driven and to generate a frictional force therewith. The flat surface is shorter in a longitudinal direction of the piezoelectric element than in a lateral direction thereof. The flat surface is longer in the longitudinal direction of the piezoelectric element at a lateral center region thereof than at a lateral end region thereof.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 29, 2015
    Inventors: Yoshiki IKEDA, Keiji OGUCHI