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:
May. 20, 2025
Filed:
Dec. 23, 2022
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); C01G 33/00 (2006.01); H10N 30/00 (2023.01); H10N 30/20 (2023.01); H10N 30/853 (2023.01);
U.S. Cl.
CPC ...
B41J 2/14201 (2013.01); C01G 33/006 (2013.01); H10N 30/2047 (2023.02); H10N 30/708 (2024.05); H10N 30/8542 (2023.02); C01P 2002/34 (2013.01); C01P 2002/77 (2013.01); C01P 2002/82 (2013.01); C01P 2006/40 (2013.01);
Abstract
A piezoelectric body contains potassium, sodium, and niobium, and has a perovskite structure. A Raman shift of peaks assigned to Aobtained by performing Raman spectroscopic analysis on a plurality of measurement regions is 400 cmor more and 700 cmor less. A difference between a maximum value and a minimum value of the Raman shift among the peaks in the plurality of measurement regions is 11.0 cmor less.