Appeal Number: 2006-2391
Application Number: 10/311,513
BACKGROUND OF THE INVENTION
The Appellants' invention relates to a water absorbent resin suitable for
absorbing polymer containing viscous liquids. The water-absorbent resin may
include an absorbent core. The absorbent core may be incorporated into absorbent
articles between a liquid permeable sheet and a liquid impermeable sheet. An
understanding of Appellants' invention can be derived from a reading of exemplary
claim 1, which is reproduced from the Brief below:
1. A water-absorbent resin suitable for absorbing polymer-
containing viscous liquids,
wherein the resin is selected from the group consisting of
hydrolyzed starch/acrylonitrile graft copolymers, neutralized
starch/acrylic acid graft copolymers, saponified vinyl acetate/acrylic
acid esters, and partially neutralized polyacrylic acids;
wherein the resin has a specific surface area of no less than 0.05
m2/g measured by a BET multipoint technique using krypton gas as an
absorption gas;
wherein the resin has a water retention capacity of 5-30 g/g for
0.9 wt% physiological saline under a centrifugal force of 167G; and
wherein the 0.02g of the water-absorbent resin exhibits a swelling
power of at least 5N (newtons) when 60 seconds has elapsed after
starting to absorb 0.9 wt% physiological saline.
PRIOR ART
The prior art references of record relied upon by the Examiner in rejecting
the appealed claims are:
Beal US 5,429,630 Jul. 4, 1995
Ishizaki US 5,981,070 Nov. 9, 1999
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