Cleaning and liquid contact with solids – Processes – Using sequentially applied treating agents
Reexamination Certificate
2004-11-30
2009-11-03
Carrillo, Sharidan (Department: 1792)
Cleaning and liquid contact with solids
Processes
Using sequentially applied treating agents
C134S002000, C134S003000, C134S022100, C134S022110, C134S022120, C134S022180, C134S022190, C134S028000, C134S030000, C134S034000, C134S035000, C134S036000, C134S040000, C134S041000, C134S042000
Reexamination Certificate
active
07611588
ABSTRACT:
The invention relates to methods and compositions for removing metal oxide soils from surfaces. The compositions include an anionic surfactant and a pH adjuster at an acidic pH. In one embodiment, the invention relates to a method of removing a metal oxide soil from a surface by (1) applying a use composition to the surface, the use composition having a pH adjuster in an amount sufficient to provide a use pH at or below 7, an anionic surfactant in an amount to remove a portion of the metal oxide soil, and a carrier, (2) removing the metal oxide soil from the surface with the use composition, and (3) rinsing the surface to remove the use composition and the metal oxide soil.
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Hei Robert D.
Peitersen Nathan D.
Ruhr Rick O.
Staub Richard K.
Carrillo Sharidan
Ecolab Inc.
Sorensen Andrew D.
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