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:
Jul. 03, 2012
Filed:
Jun. 28, 2010
Shigeru Kizaki, Tokyo, JP;
Ryota Kawai, Tokyo, JP;
Kazuyoshi Kawakita, Tokyo, JP;
Yoshiji Matsui, Tokyo, JP;
Shinichi Morishima, Tokyo, JP;
Shigeru Kizaki, Tokyo, JP;
Ryota Kawai, Tokyo, JP;
Kazuyoshi Kawakita, Tokyo, JP;
Yoshiji Matsui, Tokyo, JP;
Shinichi Morishima, Tokyo, JP;
Kyocera Kinseki Corporation, Tokyo, JP;
Abstract
A flexural-mode tuning-fork type quartz crystal resonator includes a proximal portion, a pair of vibrating arm portions, and a plurality of first concave portions. The vibrating arm portions project in a direction from the proximal portion. The first concave portions are formed into groove shapes in the upper and lower principal surfaces of the proximal portion, and extend in the widthwise direction perpendicular to the longitudinal direction of the pair of vibrating arm portions. The first concave portions formed in the upper principal surface of the proximal portion and those formed in the lower principal surface of the proximal portion are arranged at a predetermined interval not to face each other.