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:
Aug. 20, 2021
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Inventors:
Viktor Plesski, Gorgier, CH;
Julius Koskela, Helsinki, FI;
Ventsislav Yantchev, Sofia, BG;
Patrick Turner, San Bruno, CA (US);
Neal Fenzi, Santa Barbara, CA (US);
Robert B. Hammond, Santa Barbara, CA (US);
Assignee:
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/56 (2006.01); H03H 3/02 (2006.01); H03H 9/02 (2006.01); H03H 9/205 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02015 (2013.01); H03H 3/02 (2013.01); H03H 9/02228 (2013.01); H03H 9/205 (2013.01); H03H 9/568 (2013.01);
Abstract
Acoustic resonators, acoustic filter devices and methods of making the same. An acoustic resonator device includes a piezoelectric layer having front and back surfaces, a high acoustic velocity layer on the back surface, and an interdigital transducer (IDT) on the front surface. The high acoustic velocity layer has a higher acoustic velocity than an acoustic velocity of the piezoelectric layer.