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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 11218134 B1

PDFFull Text
Date of Patent:
Jan. 04, 2022

Filed:

Feb. 26, 2020

Acoustic wave filter device and composite filter device

Applicant:

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

Inventor:

Yuichi Takamine, Nagaokakyo, JP;

Assignee:

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

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Robert J Pascal

Assistant Examiner:

Jorge L Salazar, Jr

Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 9/02 (2006.01); H03H 9/13 (2006.01); H03H 9/17 (2006.01); H03H 9/60 (2006.01); H03H 9/70 (2006.01);
U.S. Cl.
CPC ...
H03H 9/6483 (2013.01); H03H 9/02125 (2013.01); H03H 9/13 (2013.01); H03H 9/17 (2013.01); H03H 9/605 (2013.01); H03H 9/70 (2013.01);
Abstract

An acoustic wave filter device includes a plurality of acoustic wave resonators. Each of the acoustic wave resonators includes a piezoelectric layer and an IDT electrode provided on the piezoelectric layer. On a surface opposite to a surface of the piezoelectric layer on which the IDT electrode is provided, a low-acoustic-velocity film and a substrate made of a semiconductor are stacked. A routing line electrically connected to an antenna terminal is provided on an insulating film provided on the piezoelectric layer.

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Quick Actions:

Takamine, Yuichi. (2022). Acoustic wave filter device and composite filter device (U.S. Patent No. 11218134). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11218134

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