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:
Feb. 03, 2026
Filed:
Dec. 18, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventor:
Satoshi Sasaki, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10N 30/87 (2023.01); H10N 30/50 (2023.01);
U.S. Cl.
CPC ...
H10N 30/87 (2023.02); H10N 30/50 (2023.02);
Abstract
A piezoelectric element includes a piezoelectric body containing a piezoelectric ceramic material, and a first electrode and a second electrode disposed on the piezoelectric body to oppose each other. A stress received by the piezoelectric body from the first electrode is larger than a stress received by the piezoelectric body from the second electrode. A polarization direction of the piezoelectric body is a direction directed from the first electrode toward the second electrode.