Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-01-02
2007-01-02
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S825000, C029S842000, C029S843000
Reexamination Certificate
active
10881588
ABSTRACT:
A technique for manufacturing a circuit board involves obtaining a plane-shaped structure having layers of circuit board material integrated together, and carving a hole within the plane-shaped structure (e.g., using a single countersinking drill bit). The carved hole includes an inner portion having a substantially uniform inner portion diameter and a connecting portion disposed between the inner portion and an outer surface of the plane-shaped structure. At least part of the connecting portion has a diameter which is larger than the substantially uniform inner portion diameter of the inner portion to improve access to the inner portion. The technique further involvesperforming a plating process on the plane-shaped structure to provide plating over the hole carved within the plane-shaped structure. The provided plating forms a countersunk via which provides an electrical pathway from the outer surface of the plane-shaped structure to an internal circuit board trace.
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Downes Stuart D.
Feinstein Louis H.
Arbes Carl J.
BainwoodHuang
EMC Corporation
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