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. 24, 2001
Filed:
Jun. 24, 1998
Masashi Gotoh, Ibaraki, JP;
Jitsuo Kanazawa, Ibaraki, JP;
Syuichiro Yamamoto, Chiba, JP;
Kenji Honda, Ibaraki, JP;
TDK Corporation, Tokyo, JP;
Abstract
A through hole,formed in a substrate and having an electrode film on an inner surface thereof is cut and divided into two through holes or blind holes each of substantially semicircular arc shape through dicing processing using a rotating blade, and one of the-divided through holes,of substantially semicircular arc shape is used as an external connection terminal,of substantially semicircular concave arc shape thereby to form a surface mounted electronic parts having a plurality of the external connection terminals,. The height H of the substantially semicircular arc formed at an inner surface of each of the external connection terminals is set to be equal to or smaller than a value obtained by subtracting twice a thickness t of the electrode film from a radius R of a curvature of the arc.