Appeal No. 2003-0234
Application No. 09/446,202
fairly suggested, to one of ordinary skill in the art, use of a
basic buffer to provide a pH greater than about 10.5.
Claims 2-4: Murch ‘678 teaches that the composition can
contain typically up to 0.2 wt% of salts of dodecylbenzene
sulfonate, which is a base stable anionic surfactant (col. 8,
lines 48-52). The exemplified viscosity is as low as 2 cp
(col. 9, lines 23-25). The buffer can be potassium carbonate or
sodium bicarbonate to provide a pH of preferably not greater than
about 12.5 (col. 9, lines 1-18 and 34-37). The aqueous carrier
can be water or water/ethanol (col. 3, lines 18-21).
Claims 5 and 6: The composition includes about 0.01 to about
15 wt% of a C8 to C18 fatty acid soap (col. 2, line 60; col. 7,
lines 14-41), and the exemplified viscosity is as low as 2 cp
(col. 9, lines 23-25).
Claim 7: The composition can be a concentrate (col. 4,
lines 10-13), even to the point of being a nonaqueous liquid or
solid (col. 5, lines 10-11), which would have fairly suggested,
to one of ordinary skill in the art, dilution by a large amount
such that the concentrate is used in an amount such as about 0.1
to about 5% by weight of the dilute aqueous treatment
composition.
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