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:
Jan. 28, 2025
Filed:
Sep. 09, 2022
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Takeshi Yamamoto, Nagoya, JP;
Yudai Uno, Nagoya, JP;
Hiroyoshi Ina, Nisshin, JP;
Keiichiro Asai, Nagoya, JP;
Tomoyoshi Tai, Inazawa, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02574 (2013.01); H03H 9/02559 (2013.01);
Abstract
A composite substrate includes: a piezoelectric layer; and a reflective layer arranged on a rear surface side of the piezoelectric layer, wherein the reflective layer includes a high-impedance layer and a low-impedance layer containing silicon oxide, and wherein a ratio of a region of first structures in the high-impedance layer is more than 70%.