Appeal No. 2002-0972
Application 08/816,466
THE INVENTION
The appellant claims a method for making a supported
metallocene catalyst system. Claim 1 is illustrative:
1. A method for forming a supported catalyst system
comprising the steps of:
(a) introducing a porous inorganic carrier to a vessel
having a starting pressure,
(b) depressurizing the vessel,
(c) introducing into the vessel a solution comprising a
metallocene catalyst component and an activator while maintaining
the depressurized pressure from step (b)
(d) pressurizing the vessel, and
(e) recovering the supported catalyst system,
steps (a) and (b) are performed before step (c).
THE REFERENCES
Uvarov et al. (Uvarov) 4,246,134 Jan. 20, 1981
Nowlin et al. (Nowlin) 5,332,706 Jul. 26, 1994
THE REJECTION
Claims 1-4, 6-9, 12-14 and 56 stand rejected under 35 U.S.C.
§ 103 as being unpatentable over the combined teachings of Nowlin
and Uvarov.
OPINION
We reverse the aforementioned rejection. We need to address
only the sole independent claim, i.e., claim 1.
2
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