Appeal No. 96-3862
Application No. 08/189,861
products are suitable for use in preparing new foams and
teaches that the obtainment of a single layer liquid product
indicates that "preferred reaction conditions are being
employed" (column 3, lines 7-38).
Appellants urge that the claimed process is
differentiated from the method of Braslaw in that neither of
the alternatively claimed second lower temperature processing
steps are taught by the applied patent (brief, page 3).
According to the examiner (answer, pages 3 and 4),
Braslaw does teach the method defined by representative claim
1, including the second reaction step thereof. In the
examiner's view, the method step required by the claimed
alternative second reaction step of "stirring at a temperature
of from about 50 to about 180°C but below the temperature at
which 1. was carried out" is anticipated by Braslaw's "second"
step. In this regard, the examiner applies Braslaw's step of
passing a product from the higher temperature dissolution step
through a rotating film evaporator maintained at 130°C as
teaching appellants' claimed alternative second step (a)
(answer, pages 4 and 6). Based on the present record, we find
ourselves in agreement with the examiner.
5
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007