Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2007-08-01
2009-08-11
Lam, Cathy (Department: 1794)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C174S255000, C174S261000, C174S264000
Reexamination Certificate
active
07572500
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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Lam Cathy
Panasonic Corporation
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
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