Composite copper foil and method for production thereof

Details Composite copper foil and method for production thereof Composite copper foil and method for production thereof

2005-07-22

2010-10-19

McNeil, Jennifer C (Department: 1784)

Stock material or miscellaneous articles

All metal or with adjacent metals

Foil or filament smaller than 6 mils

C428S610000, C428S629000, C428S632000, C428S664000, C428S674000, C205S076000, C205S182000

Reexamination Certificate

active

07816015

ABSTRACT:
A composite copper foil having three layers of a supporting metal layer, an exfoliating layer and a thin copper layer, wherein one surface of the exfoliating layer comprises, as a main component, an alloy of tungsten or an alloy of molybdenum and the other surface thereof comprises, as a main component, a metal oxide containing tungsten or a metal oxide containing molybdenum. The composite copper foil is free from undesired swelling, separation or falling of the supporting metal layer during heating and working at a high temperature, and the supporting metal layer can be exfoliated from the thin copper layer with case, after the heating and the working.

REFERENCES:
patent: 6346335 (2002-02-01), Chen et al.
patent: 2002/0036100 (2002-03-01), Slemmons et al.
patent: 1386044 (2002-12-01), None
patent: 2001-301087 (2001-10-01), None
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patent: 2003-094553 (2003-04-01), None
patent: 2003-286596 (2003-10-01), None
patent: 2004-169181 (2004-06-01), None
patent: WO 02/02444 (2002-03-01), None
Chinese Official Action dated Mar. 27, 2009, for Application No. 2005800257753.
Translation of the International Preliminary Report on Patentability, for Application No. PCT/JP2005/013466, dated May 3, 2007.

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