Appeal No. 2002-2057
Application No. 09/351,147
light olefins and aromatics. Further details of this appealed
subject matter are recited in representative claim 1, the sole
independent claim on appeal, reproduced below:
1. A process for converting a C4+ naphtha
hydrocarbon feed to a product which includes light
olefins and aromatics, comprising:
contacting said feed with a catalyst comprising
ZSM-5, ZSM-11 or combinations thereof treated with a
phosphorous compound, and a substantially inert matrix
material, wherein said catalyst contains less than 20
wt% of active matrix material and has an initial
silica/alumina molar ratio less than about 70, said
contacting being effected under conditions to produce
a product containing light olefins and aromatics.
The examiner relies on the following prior art references
as evidence of unpatentability:
Drake et al. 5,898,089 Apr. 27, 1999
(Drake) (filed Aug. 28, 1997)
Nemet-Mavrodin EP 0 323 736 A2 Jul. 12, 1989
(EP ’736)(published
EP appln.)
Claims 1, 2, 5, 7, and 10 on appeal stand rejected under 35
U.S.C. § 102(b) as anticipated by EP ’736. (Answer, page 3.)
In addition, claims 3, 4, and 6 on appeal stand rejected under
35 U.S.C. § 103(a) as unpatentable over EP ’736. (Id. at pages
3-4.) Further, claims 8 and 9 on appeal stand rejected under 35
U.S.C. § 103(a) as unpatentable over EP ’736 in view of Drake.
(Id. at pages 4-5.)
2
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