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:
Aug. 19, 2025
Filed:
Mar. 04, 2022
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Yuji Hori, Owariasahi, JP;
Takahiro Yamadera, Nagoya, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H03H 9/25 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02574 (2013.01); H03H 9/02559 (2013.01); H03H 9/02866 (2013.01); H03H 9/25 (2013.01);
Abstract
A composite substrate for an acoustic wave device includes a piezoelectric material layer, supporting substrate and x layers (x represents an integer of 3 or larger) of intermediate layers between the piezoelectric material layer and supporting substrate. The piezoelectric material layer, supporting substrate and intermediate layers satisfy a formula (1) (R<R), the formula (2) (V<V) is satisfied when x is an even number. A formula (3) (V>V) is satisfied when x is an odd number.