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:
Jun. 11, 2024
Filed:
Jul. 07, 2021
Applicant:
Sumitomo Riko Company Limited, Aichi, JP;
Inventors:
Assignee:
Sumitomo Riko Company Limited, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/08 (2006.01); B06B 1/02 (2006.01); B60R 21/015 (2006.01); G01D 5/241 (2006.01); H04R 19/00 (2006.01);
U.S. Cl.
CPC ...
G01V 3/088 (2013.01); B06B 1/0292 (2013.01); B60R 21/01552 (2014.10); G01D 5/241 (2013.01); H04R 19/00 (2013.01);
Abstract
Provided is an electrostatic transducer capable of reducing thickness and enhancing detection precision or operation precision. An electrostatic transducer () includes an insulating sheet (), a first electrode sheet () arranged on the front surface side of the insulating sheet () and having a plurality of first through holes () penetrating in a thickness direction, and a second electrode sheet () arranged on the back surface side of the insulating sheet () and having no through holes in the thickness direction or having a plurality of second through holes () which have a smaller aperture ratio than the plurality of first through holes ().