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. 20, 2016
Filed:
Aug. 04, 2015
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi-ken, JP;
Kazushige Akita, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Abstract
A wiring substrate includes an insulating substrate having a quadrangular planar outline; a quadrangular frame positioned on the surface of the insulating substrate along the periphery, and including an upper surface, a corner portion, and an adjacent portion, the corner portion including a width-expanded portion defining a via hole extending through the frame, the width-expanded portion including an inner wall surface having a rectilinear edge in a plan view, the adjacent portion including an inner wall surface, the inner wall surface of the width-expanded portion forming an obtuse angle with the inner wall surface of the adjacent portion; a via conductor filling the via hole and not exposed from the inner wall surface of the width-expanded portion; and a sealing metallization layer formed on the upper surface of the frame and electrically connected to the via conductor.