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:
Jan. 10, 2017
Filed:
Jan. 24, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Matsutaro Naito, Kamiina-gun, JP;
Yoshiyuki Aoshima, Kamiina-gun, KR;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/17 (2006.01); H03H 3/04 (2006.01); H03H 9/02 (2006.01);
U.S. Cl.
CPC ...
H03H 9/17 (2013.01); H03H 3/04 (2013.01); H03H 9/02157 (2013.01); H03H 9/177 (2013.01); H03H 2003/0435 (2013.01);
Abstract
A mesa-shaped piezoelectric resonator element including a resonator section having a thicker thickness than a peripheral section on the board surface of a piezoelectric substrate formed in a rectangular shape, wherein, when the length of the long side of the piezoelectric substrate is x and the board thickness of the resonator section is t, etching depth y of a level-difference section is set to fulfill a relationship in the following equation, based on the board thickness t.