Appeal 2007-1396
Application 10/375,235
oxygen, wherein the transition metal catalysts facilitate bleach activation of
peroxy compounds and molecular oxygen. Hermant, e.g., 1:4-17; Perkins,
e.g., 3:12-25. The ligands and complexes in these reference are
encompassed by the claim terms “organic ligand” and “complex with a
transition metal” in claim 20 and the claim term “transition metal catalyst” in
claim 18.
We find Baeck would have disclosed to one of ordinary skill in this
art detergent compositions which include lipoxidase enzymes that oxidize
carotenoid chromophores and inhibit the transfer of bleachable dyes from
the aqueous wash solution to a substrate. Baeck, e.g., 1:13 to 2:3, 2:6-8 and
12-20, 3:1-27, and 4:28 to 5:19. Baeck defines “lipoxidase enzyme” as “an
enzyme which acts to oxidise polyunsaturated fatty acids to their
corresponding hydroperoxide form,” and include the enzyme “carotenase.”
Id. 4:8-12. The compositions contain at least a lipoxidase enzyme, a
surfactant and/or builder, and other ingredients used in aqueous solutions
Id., e.g., 3:29-33, 4:2-7, 5:21-29, 46:22-27. The formulations can include
bleaching agents and additional enzymes. Id., e.g., 6:4-10. The bleaching
agents can be, among other things, inorganic perhydrate salts, peroxyacid
bleach precursors and organic peroxyacids, including sodium perborate and
sodium percarbonate. Id., e.g., 28:29 to 32:10. The additional enzymes can
be, among other things, lipases and peroxidases, the latter used with oxygen
sources in solution bleaching to prevent dye transfer. Id., e.g., 32:12-18,
33:7-26, 34:18-29. In Example 1, dishwashing compositions A, C, D, and E
contain, among other things, less than 0.1 part by weight of a lipoxidase and
of a lipase, and 10.4 parts by weight sodium perborate. Id. 54; see also 52.
In Example 6, two colored fabric cleaning compositions contain, among
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