Appeal No. 1997-2378
Application No. 08/233,533
words, the catalyst particle acts as a template for
growth of the polymer particle. . . . [Emphasis 12
added.]
12J. Boor, Jr., Ziegler-Natta Catalysts and
Polymerization, Academic, New York, 1979.
The catalytic component of appellants' invention is said
to have particles shaped as follows (Specification, pp. 13-
14):
The catalytic component obtained from the MgCl2
in accordance with the invention is also constituted
of particles which have, when viewed under a
microscope, the form of essentially regular
polyhedrons with six or eight faces in which the
paired symmetrically opposite faces are essentially
parallel, two of which faces are large and elongated
and form the top face and the bottom face of a
polyhedron such that on each of them the longest
diagonal (D) is larger than the shortest distance
(d) separating two opposite sides, which large
elongated faces are surrounded essentially
perpendicularly by the other essentially rectangular
faces that form the sides of the said polyhedron . .
. .
The ratio D/d of the catalytic component particles is said to
be from 2 to 7. See Specification, p. 14, lines 20-25.
Therefore, based on the record before us, it is
reasonable to conclude that one having ordinary skill in the
art would have understood that the specification, as
originally filed, describes the invention of claims 25 and 27.
See Wang Lab., Inc. v. Toshiba Corp., 993 F.2d 858, 866, 26
7
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