Cleaning and liquid contact with solids – Processes – Work handled in bulk or groups
Reexamination Certificate
2008-07-25
2010-10-12
Mruk, Brian P (Department: 1796)
Cleaning and liquid contact with solids
Processes
Work handled in bulk or groups
C134S025300, C134S039000, C134S040000, C134S042000, C510S238000, C510S434000, C510S475000, C510S480000, C510S490000, C510S492000, C510S494000, C510S504000
Reexamination Certificate
active
07811387
ABSTRACT:
The present invention relates to a hard surface cleaning composition comprising a copolymer, wherein said copolymer comprises a zwitterionic unit A or a mixture thereof and another unit B or a mixture thereof, wherein said unit A comprises a betaine group or a mixture thereof and wherein said betaine group of said unit A is a sulphobetaine group or a mixture thereof, and wherein said unit B is derived from vinyl-pyrrolidone.
REFERENCES:
patent: 4607076 (1986-08-01), Schulz et al.
patent: WO 98/36046 (1998-08-01), None
patent: WO 98/36046 (1998-08-01), None
patent: WO 01/38480 (2001-05-01), None
patent: WO 01/38480 (2001-05-01), None
patent: WO 2007/068744 (2007-06-01), None
PCT International Search Report, mailed Dec. 8, 2008, 3 pages.
Anthony Olivier
Evers Marc Francois Theophile
Labeau Marie Pierre
Mertens Annick Julia Oscar
Prat Evelyne
Ahn-Roll Amy I.
Lewis Leonard W.
Mruk Brian P
The Procter & Gamble & Company
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