Patents by Inventor Munenori Nakai

Munenori Nakai 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 body, piezoelectric device, and liquid discharge apparatus
    Patent number: 7786656
    Abstract: A piezoelectric body contains a ferroelectric substance phase having characteristics such that, in cases where an applied electric field is increased from the time free from electric field application, phase transition of the ferroelectric substance phase to a ferroelectric substance phase of a different crystal system occurs at least two times. The piezoelectric body should preferably be actuated under conditions such that a minimum applied electric field Emin and a maximum applied electric field Emax satisfy Formula (1): Emin<E1<Emax??(1) wherein the electric field E1 represents the electric field at which the first phase transition of the ferroelectric substance phase begins.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: August 31, 2010
    Assignee: Fujifilm Corporation
    Inventors: Yukio Sakashita, Tsutomu Sasaki, Yuuichi Okamoto, Munenori Nakai
  • PIEZOELECTRIC BODY, PIEZOELECTRIC DEVICE, AND LIQUID DISCHARGE APPARATUS
    Publication number: 20080265718
    Abstract: A piezoelectric body contains a ferroelectric substance phase having characteristics such that, in cases where an applied electric field is increased from the time free from electric field application, phase transition of the ferroelectric substance phase to a ferroelectric substance phase of a different crystal system occurs at least two times. The piezoelectric body should preferably be actuated under conditions such that a minimum applied electric field Emin and a maximum applied electric field Emax satisfy Formula (1): Emin<E1<Emax ??(1) wherein the electric field E1 represents the electric field at which the first phase transition of the ferroelectric substance phase begins.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 30, 2008
    Inventors: Yukio Sakashita, Tsutomu Sasaki, Yuuichi Okamoto, Munenori Nakai