Patents by Inventor Keiichi TADA

Keiichi TADA 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).

  • Liquid discharge apparatus and print head
    Patent number: 10507649
    Abstract: A liquid discharge apparatus includes a piezoelectric element that has a first electrode, a piezoelectric body, and a second electrode, a first switch that is capable of switching whether to supply a drive signal for driving the piezoelectric element to the first electrode, and a second switch that is arranged electrically in parallel with the piezoelectric element and is capable of switching whether to electrically connect the first electrode and the second electrode to each other.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: December 17, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Keiichi Tada
  • LIQUID DISCHARGE APPARATUS AND PRINT HEAD
    Publication number: 20190092000
    Abstract: A liquid discharge apparatus includes a piezoelectric element that has a first electrode, a piezoelectric body, and a second electrode, a first switch that is capable of switching whether to supply a drive signal for driving the piezoelectric element to the first electrode, and a second switch that is arranged electrically in parallel with the piezoelectric element and is capable of switching whether to electrically connect the first electrode and the second electrode to each other.
    Type: Application
    Filed: September 25, 2018
    Publication date: March 28, 2019
    Inventor: Keiichi TADA