Appeal No. 94-2410
Application 08/011,573
the paraffins in a fluidized bed reactor at a pressure less than
about 300 psig with a crystalline aluminosilicate zeolite
catalyst having an alpha value below about 10 (brief, page 1).
The subject matter on appeal is adequately illustrated by
independent claim 1, reproduced below:
1. A process for the disproportionation of a feedstock
comprising C -C paraffins comprising reacting the paraffins in a
3 5
fluidized bed reactor at a pressure less than about 300 psig with
a catalyst composition comprising a crystalline aluminosilicate
zeolite having an Alpha Value below above 10.
The references relied upon by the examiner are:
Chloupek et al. (Chloupek) 3,953,537 Apr. 27, 1976
Morrison 4,686,316 Aug. 11, 1987
Harandi 5,171,912 Dec. 15, 1992
Claims 1 to 20 stand rejected under 35 U.S.C. § 103 as
unpatentable over “any of the US patents 5,171,912 (Harandi),
4,686,316 (Morrison) and 3,953,537 (Chloupek et al)” (answer,
page 3). We reverse the stated rejection.
OPINION
The process of appealed claim 1 calls for the
disproportionation of a feedstock comprising propane, butane and
pentane paraffins using what appellants argue are three critical
parameters: (1) a fluidized bed reactor; (2) a pressure less
than about 300 psig; and (3) with a catalyst comprising a
2
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