Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2011-04-05
2011-04-05
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S830000, C029S874000, C205S125000
Reexamination Certificate
active
07918020
ABSTRACT:
Disclosed is a method for manufacturing an electroconductive material-filled throughhole substrate that is free from any void part in the electroconductive material filled into the throughholes. The method comprises forming an electroconductive base layer on one side of a core substrate having throughholes, and precipitating and growing an electroconductive material from one direction within the throughholes by electroplating using the electroconductive base layer as a seed layer to fill the electroconductive material into the throughholes without forming any void part and thus to manufacture an electroconductive material-filled throughhole substrate.
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Chujo Shigeki
Nakayama Koichi
Dai Nippon Printing Co. Ltd.
Harness Dickey & Pierce PLC
Parvez Azm
Tugbang A. Dexter
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