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:
Dec. 17, 2019
Filed:
Oct. 14, 2015
Applicants:
National University Corporation Shizuoka University, Shizuoka-shi, Shizuoka, JP;
Saginomiya Seisakusho, Inc., Nakano-ku, Tokyo, JP;
Inventors:
Gen Hashiguchi, Hamamatsu, JP;
Yuki Nishimori, Koganei, JP;
Shinichi Arioka, Kagawa, JP;
Masato Suzuki, Takamatsu, JP;
Kazunori Ishibashi, Sayama, JP;
Assignees:
National University Corporation Shizuoka University, Shizuoka-shi, JP;
Saginomiya Seishakusho, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 1/00 (2006.01); H04R 19/01 (2006.01); H01G 7/02 (2006.01); C09K 3/10 (2006.01); H04R 19/04 (2006.01); H04R 31/00 (2006.01); H04R 19/00 (2006.01);
U.S. Cl.
CPC ...
H04R 19/016 (2013.01); C09K 3/1006 (2013.01); H01G 7/025 (2013.01); H01G 7/028 (2013.01); H04R 19/04 (2013.01); H04R 31/006 (2013.01); H04R 19/005 (2013.01);
Abstract
An electret element includes: an electret film that contains silicon oxide; and a protective film formed over the electret film and constituted of aluminum oxide deposited through an atomic layer deposition method.