Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-01-21
2009-12-01
Trinh, Minh (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S830000, C029S831000, C029S832000, C029S837000, C029S846000, C156S293000, C174S265000
Reexamination Certificate
active
07624502
ABSTRACT:
A conductive portion is formed in a hole formed in a material sheet. A metal foil is placed on a surface of the material sheet to provide a laminated sheet. The laminated sheet is heated and pressed to provide a circuit-forming board. The metal foil includes a pressure absorption portion and a hard portion adjacent to the pressure absorption portion. The pressure absorption portion has a thickness changing according to a pressure applied thereto. The circuit-forming board provided by this method provides a high-density circuit board of high quality having reliable electrical connection.
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Supplementary European Search Report issuedApr. 9, 2008in a European Application that is a foreign counterpart of the present application.
Panasonic Corporation
Trinh Minh
Wenderoth , Lind & Ponack, L.L.P.
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