Appeal No. 96-3454 Page 3
Application No. 08/260,295
BACKGROUND
The appellants' invention relates to a method of
presulphurizing hydrocarbon conversion catalysts using a
presulphuration agent including sulfur compounds of a type (a)
and (b) each with different decomposition temperatures. An
understanding of the invention can be derived from a reading
of exemplary claim 1, which is reproduced below.
1. In a process for presulphurizing a hydrocarbon
conversion catalyst, the improvement comprising employing a
presulphuration agent containing (a) at least one first
sulphur compound having a decomposition point T1 of less than
220EC and (b) at least one second sulphur compound having a
decomposition point T2 greater than about 220EC.
The prior art references of record relied upon by the
examiner in rejecting the appealed claims are:
Seiver et al. (Seiver) 4,431,747 February 14,
1984
Berrebi 4,530,917 July 23, 1985
Claims 1-16 stand rejected under 35 U.S.C. § 103 as being
unpatentable over Berrebi in view of Seiver.
We make reference to the examiner's answer(s) for the
examiner's reasoning in support of the rejection, and to the
appellants' brief(s) for the appellants' arguments
thereagainst.
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