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:
Jun. 03, 2025
Filed:
Dec. 09, 2021
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 3/08 (2006.01); H03H 9/25 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02574 (2013.01); H03H 3/08 (2013.01); H03H 9/02559 (2013.01); H03H 9/25 (2013.01);
Abstract
A composite substrate includes a supporting substrate composed of quartz, a piezoelectric material substrate, a first amorphous layer present between the supporting substrate and piezoelectric material substrate, and a second amorphous layer present between the supporting substrate and first amorphous layer. The first amorphous layer contains 10 to 30 atom % of silicon atoms, and the second amorphous layer contains 1 to 10 atom % of fluorine atoms.