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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 12771309 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Nov. 26, 2024

Acoustic wave device including multi-component protective film

Applicant:

Murata Manufacturing Co., Ltd., Nagaokakyo, JP;

Inventors:

Toru Yamaji, Nagaokakyo, JP;

Sunao Yamazaki, Nagaokakyo, JP;

Hiroya Suzuki, Nagaokakyo, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Kyoto, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Andrea Lindgren Baltzell

Assistant Examiner:

Victor undefined Cole

Int. Cl.
CPC ...
H03H 9/02 (2006.01); C23C 16/40 (2006.01); G03F 1/48 (2012.01); H03H 3/10 (2006.01); H03H 9/05 (2006.01); H03H 9/145 (2006.01); H03H 9/25 (2006.01); H10P 14/69 (2026.01);
U.S. Cl.
CPC ...
H03H 9/02086 (2013.01); C23C 16/40 (2013.01); G03F 1/48 (2013.01); H03H 3/10 (2013.01); H03H 9/02015 (2013.01); H03H 9/02157 (2013.01); H03H 9/02228 (2013.01); H03H 9/0504 (2013.01); H03H 9/145 (2013.01); H03H 9/25 (2013.01); H10P 14/69 (2026.01);
Abstract

An acoustic wave device includes a piezoelectric layer, at least one pair of electrodes, and a protective film. The piezoelectric layer includes first and second major surfaces opposing each other in a first direction. The at least one pair of electrodes are on at least one of the first and second major surfaces. The protective film covers at least a portion of the pair of electrodes. The protective film includes a first-component insulative film including a first component and in contact with the pair of electrodes, and a second-component insulative film including a second component and located at the surface layer of the protective film. The first-component insulative film has a higher moisture resistance than the second-component insulative film. The second-component insulative film has a higher plasma resistance than the first-component insulative film.

Find Patent Forward Citations

Yamaji, Toru. (2026). Acoustic wave device including multi-component protective film (U.S. Patent No. 12771309). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12771309

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

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