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. 10, 2015
Filed:
Aug. 02, 2012
Applicants:
Satoru Matsuda, Tokyo, JP;
Takashi Matsuda, Tokyo, JP;
Michio Miura, Tokyo, JP;
Inventors:
Assignee:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/25 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02834 (2013.01);
Abstract
An acoustic wave device includes: a comb-like electrode provided on a piezoelectric substrate; and a first medium that covers the comb-like electrode and has at least a silicon oxide film in which an element is doped, wherein sonic speed in the silicon oxide film in which the element is doped is lower than sonic speed in an undoped silicon oxide film.