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:
Mar. 16, 2015
Filed:
Nov. 21, 2008
Osamu Kawachi, Yokohama, JP;
Osamu Ikata, Yokohama, JP;
Masanori Ueda, Yokohama, JP;
Suguru Warashina, Kawasaki, JP;
Osamu Kawachi, Yokohama, JP;
Osamu Ikata, Yokohama, JP;
Masanori Ueda, Yokohama, JP;
Suguru Warashina, Kawasaki, JP;
Taiyo Yuden Co., Ltd., Tokyo, JP;
Abstract
A surface acoustic wave device includes a piezoelectric substrate having a first surface on which comb-like electrodes, first pads connected thereto, and a first film are provided. The first film is located so as to surround the comb-like electrodes. A base substrate has a second surface on which second pads joined to the first pads and a second film joined to the first film are provided. The first and second films joined by a surface activation process define a cavity in which the comb-like electrodes and the first and second pads are hermetically sealed.