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:
Dec. 17, 2013
Filed:
Dec. 14, 2012
Applicant:
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/19 (2006.01);
U.S. Cl.
CPC ...
H03H 9/19 (2013.01);
Abstract
A tuning-fork type piezoelectric vibrating piece () is comprised of a base portion () comprising a piezoelectric material, a pair of vibrating arms () extends parallel from the base portion with a first thickness, a excitation electrode film () formed on the vibrating arms, a pair of tuning portions () formed at the distal ends of the vibrating arms () with a second thickness which is less than the first thickness; and a metal film () formed on at least one surface of the tuning portion.