Patents by Inventor Hitoshi Aihara

Hitoshi Aihara 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 and method for driving the same
    Patent number: 6091183
    Abstract: A piezoelectric element characterized by comprising a piezoelectric crystal which has a crystal structure around the crystal phase boundary of tetragonal and rhombohedral (MPB) in a specific temperature range and at least most of which phase-transits to tetragonal when heated to a temperature range higher than the above specific temperature range, and a method for driving the piezoelectric element in a temperature range not lower than the above specific temperature range.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: July 18, 2000
    Assignee: Kasei Optonix, Ltd.
    Inventors: Tetsuhiko Nishimura, Junji Sato, Hitoshi Aihara, Takashi Ichihara, Takashi Akiba