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. 21, 2023
Filed:
Feb. 26, 2020
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventor:
Yasunobu Hayashi, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 9/25 (2006.01); H03H 9/13 (2006.01); H03H 9/64 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02574 (2013.01); H03H 9/131 (2013.01); H03H 9/25 (2013.01); H03H 9/6453 (2013.01);
Abstract
An acoustic wave device includes a piezoelectric layer and an interdigital transducer disposed on the piezoelectric layer. The interdigital transducer primarily includes Al and includes an additive selected from a group consisting of Nd, Sc, and Ta, and a concentration of the additive in a region opposite to a piezoelectric-layer-side region of the interdigital transducer is higher than a concentration of the additive in the piezoelectric-layer-side region of the interdigital transducer.