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:
Feb. 10, 2004
Filed:
Feb. 28, 2001
Akihiko Toyoshima, Kashima-Gun, JP;
Katsunori Kokubun, Kashima-Gun, JP;
Kunihiko Azeyanagi, Kashima, JP;
Nippon Mektron, Ltd., Tokyo, JP;
Abstract
An internal layer circuit board to which an opening portion is provided at a predetermined position and a required wiring pattern is formed so as to expose a terminal portion A to the opening portion is manufactured. Subsequently, single-sided copper-clad laminates are superimposed on both sides of the internal layer circuit board through interlayer adhesive layers and to which another opening portion is provided at a position corresponding to the opening portion , and two piercing slits S are previously formed to the single-sided copper-clad laminate at corresponding positions placed outside from edges of the opening portion by a predetermined distance in accordance with two opposed sides of the opening portion . Required wiring patterns are formed to conductive layers and of the respective copper-clad laminates, and an unnecessary removal piece is finally taken off by punching out the single-sided copper-clad laminate at a position including respective both ends of the two slits S, thereby exposing the opening portion of the internal layer circuit board including the terminal portion A.