Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-07-10
2007-07-10
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S830000, C427S097100, C427S097200, C427S097700
Reexamination Certificate
active
11258068
ABSTRACT:
A plating resist film2is formed on a wiring board substrate1as a core material of a multilayer printed wiring board, then a through-hole3is formed, and through-hole conductor4is formed along the wall surface of the through-hole3and the through-hole surface of the plating resist film2, so that protrusion portion4ais formed in the through-hole conductor4. The plating resist film2is then stripped off and a panel plating layer5is formed on the surface of the wiring board substrate1and the through-hole conductor4so that the through-hole4and the panel plating layer5are connected with the protrusion4acoated, and thus the connection area can be increased.
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Arbes Carl J.
Birch & Stewart Kolasch & Birch, LLP
Sharp Kabushiki Kaisha
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