Appeal No. 1997-2175
Application No. 08/201,522
This is a decision on an appeal from the final rejection
of claims 1 through 19 which are all of the claims in the
application.
The subject matter on appeal relates to a water swellable
wound dressing material comprising from 5 to 50% of an
alginate ester of a C -C polyhydric alcohol, from 50 to 95% of
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a humectant and less than 1.5% of polyvinyl alcohol. This
appealed subject matter is adequately illustrated by
independent claim 1, the sole independent claim on appeal,
which reads as follows:
1. A water swellable wound dressing material comprising,
by weight based on the weight of the material when anhydrous:
from 5% to 50% of an alginate ester of a C -C polyhydric
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alcohol;
from 50% to 95% of a humectant consisting of one or more
C -C monohydric or polyhydric alcohols; and
1 6
from 0% to 30% of water,
provided that the wound dressing material comprises less
than 1.5% by weight of polyvinyl alcohol.
The reference relied upon by the examiner as evidence of
obviousness is:
European Patent Application 0 095 892 Dec. 7, 1983
(Nambu)
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