The opinion in support of the decision being entered
today was not written for publication and is not binding
precedent of the Board.
Paper No. 39
UNITED STATES PATENT AND TRADEMARK OFFICE
_______________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
_______________
Ex parte GIULIANO CECCHIN,
ANTEO PELLICONI, ANTONIO CIARROCCHI
and PAOLO FERRARI
______________
Appeal No. 1998-3209
Application 08/338,284
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ON BRIEF
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Before WARREN, LIEBERMAN and KRATZ, Administrative Patent Judges.
WARREN, Administrative Patent Judge.
Decision on Appeal
This is an appeal under 35 U.S.C. § 134 from the decision of the examiner finally
rejecting claims 1, 2 and 8, which are all of the claims in the application. Claim 8, as it stands of
record, is illustrative of the claims on appeal:
1. Crystalline homopolymers of propylene or copolymers of propylene with from 0.5 to 6%, by
weight with respect to the copolymer, of ethylene, a C4-8 alpha-olefin or both, prepared by
sequential polymerization in at least two stages in the presence of a catalyst comprising a
magnesium halide supported solid catalyst component, an Al-alkyl compound and an external
electron donor compound consisting of a silane compound having bonded to the silicon atom at
least one cyclopentyl group and one or more –OR group wherein R is C1-18 alkyl, C3-18
cycloalkyl, C6-18 aryl or C7-18 aralkyl radical and having a MIL > 2g/10 minutes, an intrinsic
viscosity [η]in tetrahydronaphthalene at 135°C ≤ 2.8 dl/g, a Mw/Mn > 20, a content of fraction
insoluble in xylene at 25° ≥ 94, flexural modulus from 1600 to 2700 MPa, notched Izod at 23°C
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