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:
Oct. 01, 2019
Filed:
Sep. 19, 2018
Applicant:
Ngk Insulators, Ltd., Nagoya, Aichi, JP;
Inventors:
Tomoyoshi Tai, Inazawa, JP;
Masashi Goto, Nagoya, JP;
Yudai Uno, Nagoya, JP;
Shinya Kaneko, Okazaki, JP;
Assignee:
NGK INSULATORS, LTD., Nagoya, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/02 (2006.01); H01L 41/09 (2006.01); H01L 41/187 (2006.01); H01L 41/313 (2013.01); H01L 41/337 (2013.01); H03H 9/25 (2006.01); H03H 3/08 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02574 (2013.01); H01L 41/09 (2013.01); H01L 41/187 (2013.01); H01L 41/313 (2013.01); H01L 41/337 (2013.01); H03H 9/02559 (2013.01); H03H 9/02622 (2013.01); H03H 9/25 (2013.01); H03H 3/08 (2013.01);
Abstract
A bonded body includes a supporting body composed of a ceramic, a bonding layer provided over a surface of the supporting body and composed of one or more material selected from the group consisting of mullite, alumina, tantalum pentoxide, titanium oxide and niobium pentoxide, and a piezoelectric single crystal substrate bonded with the bonding layer. The surface of the supporting body has an arithmetic average roughness Ra of 0.5 nm or larger and 5.0 nm or smaller.