Appeal No. 95-0565
Application 07/867,089
to a person having ordinary skill in the art at the time the
invention was made. Accordingly, we need not consider whether
the Declarations
Under 37 CFR § 1.132 of Yukinaga Yokota (Paper No. 28, filed
March 16, 1993) and Akira Yamamuro (Paper No. 23, filed June
12, 1992), of record, are sufficient in rebuttal.
McDaniel ‘729 decolors an alkyl glycoside reaction
product with hydrogen peroxide, contacts the mixture of alkyl
glycoside and hydrogen peroxide with a source of sulfur
dioxide, and recovers the decolored reaction product (McDaniel
‘729, col. 2, l. 55-65). McDaniel ‘729 exposes the mixture of
alkyl glycoside and hydrogen peroxide to a source of sulfur
dioxide, even though he acknowledges that persons skilled in
the art were aware that other reducing agents such as
phosphorous, hypophosphorous, sulfurous, hyposulfurous,
nitrous and hyponitrous acids may be utilized in processing
alkyl glycosides (McDaniel ‘729, col. 1, l. 51-61; citing EP
0077167, published April 20, 1983).
McDaniel ‘918 states at column 1, lines 36-49:
It has also been suggested that the color bodies
present in a glycoside composition may be eliminated
by treatment with various reducing acids. The acid
reduction has its limitations in that the acidic material
must be neutralized or removed from the end products. . . .
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