The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 2013
Filed:
Jun. 07, 2010
Hiroyuki Kobayashi, Ashigarakami-gun, JP;
Yukio Sakashita, Ashigarakami-gun, JP;
Hiroyuki Kobayashi, Ashigarakami-gun, JP;
Yukio Sakashita, Ashigarakami-gun, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A piezoelectric device which includes a piezoelectric body having piezoelectricity and a pair of electrodes for applying an electric field to the piezoelectric body in a predetermined direction in which a piezoelectric strain constant d(pm/V) and a relative pemittivity εof the piezoelectric body satisfy Formulae (1) and (2) below. This makes the piezoelectric device excellent both in transmission and reception capabilities and appropriate for use as a piezoelectric actuator, a sensor, an ultrasonic sensor, or a power generating device.100<ε<1500  (1)(pm/V)>12√ε  (2).