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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.:

US 11937510 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

Sep. 29, 2020

Piezoelectric ceramics and their manufacturing methods, and piezoelectric device

Applicant:

Taiyo Yuden Co., Ltd., Tokyo, JP;

Inventors:

Tomohiro Harada, Tokyo, JP;

Yuuhei Ueyama, Tokyo, JP;

Assignee:

TAIYO YUDEN CO., LTD., Tokyo, JP;

Attorney:

CHEN YOSHIMURA LLP

Primary Examiner:

Shawki S Ismail

Assistant Examiner:

Monica undefined Mata

Int. Cl.
CPC ...
H01L 41/187 (2006.01); H01L 41/047 (2006.01); H01L 41/312 (2013.01); H01L 41/43 (2013.01); H10N 30/072 (2023.01); H10N 30/097 (2023.01); H10N 30/853 (2023.01); H10N 30/87 (2023.01);
U.S. Cl.
CPC ...
H10N 30/8536 (2023.02); H10N 30/072 (2023.02); H10N 30/097 (2023.02); H10N 30/871 (2023.02);
Abstract

A piezoelectric ceramic containing no lead as a constituent element is provided. Coefficient of variation C.V. of grain size of grains contained in the piezoelectric ceramic is 35% or less, and an image quality (IQ) image obtained by analyzing a cross section of the piezoelectric ceramic by an electron backscatter diffraction (EBSD) method shows that at least one of the grains has a grain size of 3 μm to 5 μm and an area ratio of a domain in said at least one of the grains is 85% or more.

Find Patent Forward Citations

Harada, Tomohiro. (2024). Piezoelectric ceramics and their manufacturing methods, and piezoelectric device (U.S. Patent No. 11937510). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11937510

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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