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:
Sep. 16, 2008
Filed:
Apr. 27, 2005
Tomohiro Yamada, Nagoya, JP;
Masato Komazawa, Nagoya, JP;
Tetsuya Hatta, Nagoya, JP;
Takatoshi Nehagi, Nagoya, JP;
Tomohiro Yamada, Nagoya, JP;
Masato Komazawa, Nagoya, JP;
Tetsuya Hatta, Nagoya, JP;
Takatoshi Nehagi, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
In an inspecting method of a piezoelectric/electrostrictive actuator having a piezoelectric/electrostrictive element and two or more electrodes, the frequency response characteristics is picked up when a vibration is given to the piezoelectric/electrostrictive actuator, and the amount of displacement of the piezoelectric/electrostrictive actuator is predicted by the frequency response characteristics. The piezoelectric/electrostrictive actuator is precisely inspected without dissolution and destruction and without actual driving as a product.