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:
Feb. 07, 2024
Taiyo Yuden Co., Ltd., Tokyo, JP;
Koichi Sato, Tokyo, JP;
Shinji Yamamoto, Tokyo, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
An acoustic wave device includes a support substrate, a piezoelectric layer provided on the support substrate, at least one pair of comb-shaped electrodes provided on the piezoelectric layer, the at least one pair of comb-shaped electrodes including a plurality of electrode fingers, a first intermediate layer provided between the support substrate and the piezoelectric layer, a second intermediate layer provided between the support substrate and the first intermediate layer, the second intermediate layer having a porosity higher than a porosity of the first intermediate layer, and a third intermediate layer provided between the support substrate and the second intermediate layer, the third intermediate layer having a porosity lower than the porosity of the second intermediate layer.