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. 15, 2014
Filed:
Dec. 22, 2011
Shuichi Mizusawa, Saitama, JP;
Takehiro Takahashi, Saitama, JP;
Kunio Morita, Saitama, JP;
Masakazu Harada, Saitama, JP;
Shuichi Mizusawa, Saitama, JP;
Takehiro Takahashi, Saitama, JP;
Kunio Morita, Saitama, JP;
Masakazu Harada, Saitama, JP;
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Abstract
AT-cut quartz-crystal vibrating pieces and corresponding quartz-crystal devices are disclosed each having a vibrating portion surrounded by a frame portion across a through-slot configured to provide a wide vibrating portion. An exemplary vibrating piece has a quartz-crystal vibrating portion that vibrates when electrically energized, a frame portion surrounding the vibrating portion, and a through-slot defined between the vibrating portion and the frame portion. The through-slot includes a first through-slot extending in the X-axis direction along +Z'-edge of the vibrating portion, and a second through-slot extending in the X-axis direction along the −Z′-edge of the vibrating portion. The first through-slot has a different width than the second through-slot.