Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-08-18
2009-08-11
Phan, Thiem (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S830000, C029S832000, C029S840000, C029S852000, C174S250000, C174S255000, C174S258000, C174S260000
Reexamination Certificate
active
07571540
ABSTRACT:
A method of producing a suspension board with circuit, wherein after an insulating base layer is formed on a metal supporting board, a conductive pattern including a ground wiring pattern and a signal wiring pattern is formed on the insulating base layer. Then, an insulating cover layer to cover the conductive pattern is formed on the insulating base layer in such a manner that a first cover opening portion and a second cover opening portion are formed in the insulating cover layer. Then, an electrolytic plating layer is formed on a surface of the ground terminal exposed from the first cover opening portion and on a surface of the ground connecting portion exposed from the second cover opening portion, feeding electric power from the ground wire. Thereafter, a metal filling layer is formed in the base opening portion to electrically connect the ground connecting portion and the metal supporting board.
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Aonuma Hidenori
Ohwaki Yasuhito
Akerman & Senterfitt
Edwards, Esq. Jean C.
Nitto Denko Corporation
Phan Thiem
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