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. 01, 2022
Filed:
Mar. 20, 2018
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/187 (2006.01); C04B 35/495 (2006.01); H01L 41/083 (2006.01);
U.S. Cl.
CPC ...
H01L 41/1873 (2013.01); C04B 35/495 (2013.01); H01L 41/083 (2013.01); C04B 2235/3255 (2013.01); C04B 2235/3267 (2013.01); C04B 2235/3281 (2013.01); C04B 2235/768 (2013.01);
Abstract
A piezoelectric composition including copper and a complex oxide having a perovskite structure represented by a general formula ABO, in which an A site element in the ABOis potassium or potassium and sodium, a B site element in the ABOis niobium or niobium and tantalum, the copper is included in n mol % in terms of a copper element with respect to 1 mol of the complex oxide, and n satisfies 0.100≤n≤1.000.