Appeal No. 1996-3423
Serial No. 08/314,471
incorporated in an even more complicated process like
that of Senn where there are two other passivating
agents. It makes it very difficult to predict the
outcome the combined gasoline/light cycle oil yield.
Our ability to predict the combined gasoline/light
cycle oil yield from the addition of boron is not made
easier by Senn, which does disclose yields of gasoline
and light cycle oil. Yields are disclosed for catalyst
additives zirconium, antimony and tungsten and
combinations of zirconium/antimony and antimony/tungsten
(see Tables I, II, and III, columns 9-12) but, again, the
increase in yield is not merely the result of combining
passivating agents. For instance, Catalyst H with 800
ppm antimony and 600 ppm zirconium (Table II) has a
combined yield of 65.8, the same yield obtained by
Catalyst A (Table I) with 4800 ppm antimony. This
suggests that the amount of a passivating agent is a
factor to be considered when seeking to obtain an
increase in the combined yield. It is this and other
factors which are embodied in the claims through the
phrase: "thereby causing an increase of the combined
yield of gasoline and light cycle oil produced in said
10
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007