Patents by Inventor Shuuhei Tabata

Shuuhei Tabata 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).

  • Piezoelectric element, piezoelectric member, liquid discharge head, and recording device each using piezoelectric element
    Patent number: 9873248
    Abstract: The present invention aims at providing a piezoelectric element with less characteristic variations with time, and a liquid discharge head and a recording device each using the piezoelectric element. The piezoelectric element 30 of the present invention is the piezoelectric body 30 (piezoelectric ceramic layer 21b) containing a potassium sodium niobate composition as a primary component. The piezoelectric body extends in a planar direction. A compressive stress is applied in the planar direction. A phase transition point between a tetragonal crystal system and an orthorhombic crystal system is ?20° C. or below.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: January 23, 2018
    Assignee: KYOCERA Corporation
    Inventors: Makoto Higashibeppu, Shuuhei Tabata, Tomonori Eguchi, Izuru Sato
  • PIEZOELECTRIC ELEMENT, PIEZOELECTRIC MEMBER, LIQUID DISCHARGE HEAD, AND RECORDING DEVICE EACH USING PIEZOELECTRIC ELEMENT
    Publication number: 20170036445
    Abstract: The present invention aims at providing a piezoelectric element with less characteristic variations with time, and a liquid discharge head and a recording device each using the piezoelectric element. The piezoelectric element 30 of the present invention is the piezoelectric body 30 (piezoelectric ceramic layer 21b) containing a potassium sodium niobate composition as a primary component. The piezoelectric body extends in a planar direction. A compressive stress is applied in the planar direction. A phase transition point between a tetragonal crystal system and an orthorhombic crystal system is ?20° C. or below.
    Type: Application
    Filed: November 28, 2014
    Publication date: February 9, 2017
    Applicant: KYOCERA Corporation
    Inventors: Makoto Higashibeppu, Shuuhei Tabata, Tomonori Eguchi, Izuru Sato