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:
Dec. 10, 2024
Filed:
Jan. 20, 2022
Ngk Insulators, Ltd., Nagoya, JP;
Ryosuke Hattori, Ichinomiya, JP;
Keiichiro Asai, Nagoya, JP;
Tomoyoshi Tai, Inazawa, JP;
Yudai Uno, Nagoya, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
A bonded body includes a supporting substrate, piezoelectric material substrate and a multilayer film between the supporting substrate and piezoelectric material substrate. The multilayer film includes a lamination structure having a first layer, second layer, third layer and fourth layer in that order. The first layer and third layer are composed of silicon oxides, and the second layer and fourth layer are composed of metal oxides. The refractive index of the second layer is higher than the refractive index of the first layer and refractive index of the third layer. The refractive index of the second layer is different from the refractive index of the fourth layer.