Compositions – Etching or brightening compositions
Reexamination Certificate
2007-01-30
2007-01-30
Norton, Nadine G. (Department: 1765)
Compositions
Etching or brightening compositions
C252S079200, C252S079400, C438S745000
Reexamination Certificate
active
10290765
ABSTRACT:
The present invention is directed to certain fluorinated surfactants, and use thereof in acid etch solutions, such as in aqueous buffered acid etch solutions. The etch solutions are used with a wide variety of substrates, for example, in the etching of silicon oxide-containing substrates.
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Flynn Richard M.
Parent Michael J.
Savu Patricia M.
3M Innovative Properties Company
Kokko Kent S.
Norton Nadine G.
Umez-Eronini Lynette T.
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