Appeal 2007-3396
Application 11/008,592
art." The very narrow point for which the examiner cites Skowronski-that
additives may be used with either preforrnulated component-is so
consistent with what Horn already teaches or suggests that those in the art
would not be troubled by the lack of zeolites and less relevant teachings also
found in Skowronski.
The Eisen patent
Eisen relates to the production of polyurethane integral foams using a
fluoroalkane as the blowing agent.14 Specifically, a process in which:"
a) organic and/or modified organic polyisocyanates
and/or polyisocyanate prepolynlers are reacted with
b) at least one polyol component with an OH number of
20 to 200 and a functionality of 2 to 6, preferably 2 to 3,
c) optionally in combination with a polyol component
with an OH number of 201 to 899 and a functionality of
2 to 3, and with
d) at least one chain lengthening component with an OH
or amine number of 600 to 1,850 and a functionality of 2
to 4, and with
e) optionally additives, activators and/or stabilizers which
are known per se
in the presence of water and in the presence of 1,1,1,3,3-
pentafluorobutane and blowing agent mixtures
comprising at least one further fluoroalkane.
Eisen is consistent with, but for claim I less instructive than, Horn.
Consequently, we focus on the HornISkowronski rejection.
3 3 In re Etter, 756 F.2d 852, 859,225 USPQ 1,6 (Fed. Cir. 1985) (en banc).
34 Eisen 1:8-14.
3 5 Eisen 154-25.
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