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:
Jul. 21, 2026
Filed:
Nov. 16, 2022
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Katsuya Daimon, Nagaokakyo, JP;
Koji Yamamoto, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An acoustic wave device includes a piezoelectric substrate and IDT electrodes each including a first pitch portion with a relatively wide electrode finger pitch and a second pitch portion with a relatively narrow electrode finger pitch. A central region is located on a central side in a direction in which electrode fingers extend, and first and second edge regions are located on both sides of the central region. Mass addition films are in the first and second edge regions and include first mass addition films in the first pitch portion and second mass addition films in the second pitch portion. A length of the first mass addition film along an acoustic wave propagation direction is greater than a length of the second mass addition film.