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:
Sep. 30, 2025
Filed:
May. 12, 2023
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Keiji Okada, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
An acoustic wave filter includes an input end, an output end, and a series arm connecting the input end and the output end. The series arm includes n (n=3) acoustic wave resonators connected in series in an order of first, second, and third acoustic wave resonators. The first, second, and third acoustic wave resonators include multiple electrode fingers. The first, second, and third acoustic wave resonators include an mth acoustic wave resonator (m is a natural number of 1<m<n, where m=2). An electrode finger pitch of the second acoustic wave resonator is smallest among electrode finger pitches of the first, second, and third acoustic wave resonators.