Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2008-05-27
2008-05-27
Norris, Jeremy C (Department: 2841)
Metal working
Method of mechanical manufacture
Electrical device making
C361S783000, C361S779000, C361S760000, C029S824000, C029S830000, C029S831000, C029S852000, C174S255000, C174S256000, C174S257000, C174S258000, C174S264000, C438S623000, C438S624000, C438S678000, C438S599000
Reexamination Certificate
active
07377032
ABSTRACT:
A printed wiring board for mounting electronic components includes an insulating layer and a wiring pattern formed on one surface of the insulating layer, wherein one end portion of a filled via4is connected with the wiring pattern and the other end portion is overlaid with a covering layer9obtained by applying a conductive paste to cover at least the boundary between the filled via4and the insulating layer2; alternatively, a plating resist7is formed at the other end portion to cover at least the boundary between the filled via4and the insulating layer2, and is removed after an end portion of the filled via4enclosed within the plating resist7is plated to produce a terminal layer, thereby preventing a wet processing liquid such as a tin plating solution from leaking in between the filled via4and the insulating layer2.
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Iguchi Yutaka
Sumi Shinichi
Chen Xiaoliang
Mitsui Mining & Smelting Co. Ltd.
Norris Jeremy C
The Webb Law Firm P.C.
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