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. 20, 2026
Filed:
Sep. 26, 2023
Seiko Epson Corporation, Tokyo, JP;
Atsushi Matsuo, Shiojirir, JP;
Katsuhiko Maki, Chino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A resonator element includes an AT-cut quartz crystal substrate having a first surface that is a front surface and a second surface that is a rear surface with respect to the front surface, the two surfaces extending along the axes X and Z' of a quartz crystal, and further having side surfaces that link the first and second surfaces to each other, a first excitation electrode disposed at the first surface, a first extraction electrode disposed at the first surface and coupled to the first excitation electrode, a second excitation electrode disposed at the second surface, and a second extraction electrode disposed at the second surface and coupled to the second excitation electrode. The side surfaces include a first side surface located at one side of the direction of the axis X, and second and third side surfaces that intersect with the first side surface. At least one of the first and second extraction electrodes is disposed at and extends along the first side surface. At least one of the second and third side surfaces has a fracture surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile