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. 10, 2020
Filed:
Feb. 09, 2016
Applicants:
The University of Tokyo, Tokyo, JP;
Saginomiya Seisakusho, Inc., Tokyo, JP;
Inventors:
Hiroyuki Fujita, Tokyo, JP;
Gen Hashiguchi, Tokyo, JP;
Hisayuki Ashizawa, Sayama, JP;
Hiroyuki Mitsuya, Sayama, JP;
Kazunori Ishibashi, Sayama, JP;
Assignees:
The University of Tokyo, Tokyo, JP;
Saginomiya Seisakusho, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02N 1/10 (2006.01); H02N 1/00 (2006.01); H01G 7/02 (2006.01);
U.S. Cl.
CPC ...
H02N 1/10 (2013.01); H01G 7/025 (2013.01); H02N 1/008 (2013.01); Y10T 29/49226 (2015.01);
Abstract
An electret element includes: an Si layer, an SiOlayer formed at a surface of the Si layer; and an electret formed at the SiOlayer near an interface of the SiOlayer and the Si layer.