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:
Nov. 06, 2012
Filed:
Oct. 06, 2009
Applicants:
Ryoichi Ichikawa, Saitama, JP;
Mitoshi Umeki, Saitama, JP;
Inventors:
Ryoichi Ichikawa, Saitama, JP;
Mitoshi Umeki, Saitama, JP;
Assignee:
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 37/00 (2006.01); B32B 37/02 (2006.01); B32B 38/00 (2006.01); B32B 38/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods are disclosed for manufacturing piezoelectric devices. An exemplary method comprises the step of bonding a lid wafer, a piezoelectric frame wafer (having a vibrating piece and a outer frame surrounding the vibrating piece), and a base wafer (having at least one wiring through-hole) together. A surface of a unit (typically ball-shaped) of eutectic metal is cleaned and then arranged on the through-hole. The unit of eutectic metal is then melted in a vacuum or inert gas environment to allow the eutectic metal to enter the through-hole.