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:
Jun. 19, 2012
Filed:
Feb. 09, 2010
Applicant:
Takefumi Saito, Saitama, JP;
Inventor:
Takefumi Saito, Saitama, JP;
Assignee:
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tuning-fork type crystal vibrating piece () is comprised of a base portion () comprising a piezoelectric material, a pair of parallel vibrating arms () with a designated thickness (D) and width (W) extend from the base portion, and a pair of weight portions () are formed by enlarging the width (W) of the distal ends pair of vibrating arms. A cross-section of the pair of weight portions is formed symmetric with a central axis which is center of the pair of vibrating arms, and at least one portion of the pair of weight portions has a thickness which is less than the designated thickness (D).