Appeal No. 2003-0820
Application No. 09/789,989
preparing water-blown polyurethane foam using a gaseous co-
blowing agent in which an A-side containing isocyanate is mixed
with a B-side containing polyol, the improvement which comprises
conducting such mixing at a pressure of no more than about 1,300
psig.” As pointed out by the examiner (answer, page 4), each
reference discloses a process in which an isocyanate-containing
component and a polyol-containing component are mixed at ambient
conditions. Thus, each reference describes every limitation of
appealed claim 1.
The appellants’ remark concerning the selection of a
“critical upper pressure range to achieve improved water-blown
foams when using gaseous blowing agents” is unavailing because
the recited pressure range of “no more than about 1300 psig”
reads on the ambient pressure condition disclosed in the
references.
For these reasons and those set forth in the answer, we
affirm the examiner’s rejections under 35 U.S.C. § 102(b) of
appealed claims 1 through 4 as anticipated by Valoppi or De Vos.
The decision of the examiner is affirmed.
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