Compositions – Etching or brightening compositions
Reexamination Certificate
2006-02-21
2006-02-21
Norton, Nadine G. (Department: 1765)
Compositions
Etching or brightening compositions
C252S079200, C252S079300, C438S745000, C216S100000, C216S102000, C216S105000, C216S108000, C216S109000
Reexamination Certificate
active
07001533
ABSTRACT:
Non-chromate solutions for treating and/or etching metals, particularly, aluminum, aluminum alloys, steel and titanium, and method of applying same wherein the solutions include either a titanate or titanium dioxide as a “drop-in replacement” for a chromium-containing compound in a metal surface etching solution that otherwise would contain chromium.
REFERENCES:
patent: 4100015 (1978-07-01), Russell
patent: 4728456 (1988-03-01), Yamasoe et al.
patent: 5052421 (1991-10-01), McMillen
Brown Richard
Medeiros Maria G.
Tucker Wayne C.
Chen Eric B.
Kasischke James M.
Nasser Jean-Paul A.
Norton Nadine G.
Stanley Michael P.
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