Appeal No. 2003-0234
Application No. 09/446,202
F.2d 688, 693, 16 USPQ2d 1897, 1901 (Fed. Cir. 1990) (en banc),
cert. denied, 500 U.S. 904 (1991).
Claims 2 and 8
The appellants argue that Murch ‘295 does not disclose or
suggest dilute treatment solutions comprising low levels of
anionic surfactant (brief, page 5). The appellants’ claims 2
and 8 require less than about 0.5 wt% of toxicologically-
acceptable base-stable anionic detergent surfactant. The
composition of Murch ‘295 can contain a toxicologically-
acceptable base-stable anionic detergent surfactant, the
disclosed amount being typically up to 0.2 wt% (col. 8, lines 48-
52; col. 6, lines 62-67).
Claims 4-6, 10 and 11
The appellants argue that Murch ‘295 does not disclose or
suggest a composition comprising less than about 0.1% of
toxicologically-acceptable base-stable sodium and/or potassium
alkyl sulfate and/or C8-14 soap to reduce the viscosity of the
solution to less than about 10 cp (claims 4 and 10) or less than
about 5 cp (claims 5, 6 and 11) (brief, page 5). Murch ‘295
discloses that the composition can contain about 0.01 to about
15 wt% C8-18 fatty acid soap (col. 2, lines 63-65; col. 7,
lines 21-61) and that the levels and identities of the
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