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:
Apr. 08, 2014
Filed:
Aug. 18, 2011
Applicants:
Takuya Owaki, Minowa, JP;
Kunihito Yamanaka, Minowa, JP;
Inventors:
Takuya Owaki, Minowa, JP;
Kunihito Yamanaka, Minowa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/145 (2006.01); H03H 9/25 (2006.01); H03H 9/19 (2006.01); H03H 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A surface acoustic wave resonator has a quartz crystal substrate having Euler angles of (φ=0°, 110°≦θ≦150°, 88°≦ψ≦92°) and an IDT having a plurality of electrode fingers disposed on the quartz crystal substrate, and using a surface acoustic wave as an excitation wave, a plurality of grooves arranged in a propagation direction of the surface acoustic wave to form stripes is disposed on the quartz crystal substrate, and the electrode fingers are disposed one of between the grooves and inside the grooves.