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:
Nov. 29, 2016
Filed:
May. 13, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 1/00 (2006.01); H04R 19/00 (2006.01); H04R 1/00 (2006.01); B06B 1/02 (2006.01); B81C 1/00 (2006.01);
U.S. Cl.
CPC ...
H04R 1/00 (2013.01); B06B 1/0292 (2013.01); B81C 1/00626 (2013.01); B81B 2201/0271 (2013.01); B81B 2203/04 (2013.01); H04R 2201/003 (2013.01);
Abstract
An electromechanical transducer includes a substrate, a first electrode disposed on the substrate, and a vibration film including a membrane disposed on the first electrode with a space therebetween and a second electrode disposed on the membrane so as to oppose the first electrode. The first electrode has a surface roughness value of 6 nm RMS or less.