Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2005-06-14
2005-06-14
La Villa, Michael (Department: 1775)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S626000, C428S647000, C428S648000, C428S674000, C428S658000, C428S332000, C428S336000, C428S610000, C428S457000, C428S644000, C174S126100
Reexamination Certificate
active
06905782
ABSTRACT:
The present invention is directed to a coated substrate, comprising: an antitarnish layer deposited on a substrate in an amount effective to prevent tarnishing of said coated substrate; and an outer layer deposited onto said antitarnish layer, said outer layer comprising tin or tin alloys having at least 50% by weight tin. The present invention is also directed to coated substrates having a concentration gradient of antitarnish agent diffused into the coating, as well as methods of forming such coated substrates.
REFERENCES:
patent: 4883774 (1989-11-01), Djennas et al.
patent: 5510197 (1996-04-01), Takahashi et al.
patent: 6596621 (2003-07-01), Copeland et al.
patent: 01-283780 (1989-11-01), None
patent: 01-306574 (1989-12-01), None
patent: 02-301573 (1990-12-01), None
Chen Szuchain
Fister Julius C.
Laurello Christopher P.
Tyler Derek E.
Galletta Elizabeth A.
Garabedian Todd E.
La Villa Michael
Olin Corporation
Wiggin and Dana LLP
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