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:
Jul. 23, 2019
Filed:
Oct. 14, 2015
Applicant:
Yamaha Corporation, Hamamatsu-shi, Shizuoka-ken, JP;
Inventor:
Kenichi Yoshinaga, Hamamatsu, JP;
Assignee:
Yamaha Coporaration, Hamamatsu-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04R 19/02 (2006.01); H04R 7/04 (2006.01); H04R 19/00 (2006.01); H04R 19/04 (2006.01);
U.S. Cl.
CPC ...
H04R 19/02 (2013.01); H04R 7/04 (2013.01); H04R 19/005 (2013.01); H04R 19/04 (2013.01);
Abstract
A fixed electrode configured to face a diaphragm and forming a capacitance with the diaphragm, including a plurality of protrusions formed by plastic deformation on one surface of the fixed electrode that is to face the diaphragm, so as to protrude toward the diaphragm.