Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Patent
1988-12-27
1990-10-23
Albrecht, Dennis
Cleaning and liquid contact with solids
Processes
For metallic, siliceous, or calcareous basework, including...
134 38, 134 42, 252 791, 252 795, 252156, 252173, 252541, 252545, 252547, 252DIG14, 430327, 430331, B08B 308, C11D 706, C11D 732, C11D 734
Patent
active
049649191
ABSTRACT:
Composition of matter and method of cleaning silicon wafers; the composition of matter is an aqueous solution of potassium hydroxide and a nitrogen-containing compound, preferably tetramethylammonium hydroxide. The wafer is immersed in the solution, rinsed and dried.
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Albrecht Dennis
Nalco Chemical Company
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