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. 13, 2015
Filed:
Sep. 11, 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:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/02834 (2013.01); H03H 9/0222 (2013.01); H03H 9/02559 (2013.01); H03H 9/02842 (2013.01); H03H 9/64 (2013.01);
Abstract
An acoustic wave device includes: an electrode that is located on a substrate and excites an acoustic wave; and an oxide silicon film that is doped with an element and provided so as to cover the electrode, wherein a normalized reflectance obtained by normalizing a local maximum value of a reflectance when a light is caused to enter an upper surface of the oxide silicon film doped with the element by a reflectance when a light having a wavelength at the local maximum value is caused to enter an upper surface of the substrate directly is equal to or larger than 0.96.