Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2004-06-25
2010-10-05
Webb, Gregory E (Department: 1796)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S176000
Reexamination Certificate
active
07807613
ABSTRACT:
The invention relates to aqueous, buffered, fluoride containing compositions having a pH of greater than 7.0 to about 11.0. In certain embodiments, the buffered compositions have an extended worklife because pH dependent attributes such as oxide and metal etch rates are stable so long as the pH remains stable.
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Peters Darryl W.
Rieker Jennifer M.
Rovito Roberto J.
Air Products and Chemicals Inc.
Morris-Oskanian Rosaleen P.
Rossi Joseph D.
Webb Gregory E
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