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:
Apr. 26, 2016
Filed:
Jun. 18, 2010
Applicants:
Makoto Takagi, Yokohama, JP;
Masao Majima, Isehara, JP;
Inventors:
Makoto Takagi, Yokohama, JP;
Masao Majima, Isehara, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B06B 1/02 (2006.01);
U.S. Cl.
CPC ...
B06B 1/0292 (2013.01); B06B 1/0261 (2013.01);
Abstract
An electromechanical transducer includes a plurality of elements each including a first electrode and a second electrode with a gap therebetween, a voltage applying unit configured to apply an AC voltage to the first electrode, and a sensitivity variation computing unit configured to compute a sensitivity variation for each of the elements using a signal output from the second electrode of the element due to the application of the AC voltage.