Appeal No. 1997-1750
Application No. 08/524,024
disclosed by Toyota corresponds to appellants' first, second
and third polymerization steps. While Toyota does not
disclose the presently claimed catalyst on a finely divided
carrier of silica, the examiner correctly points out that
Kerth expressly teaches that appellants' catalyst composition
provides numerous advantages over a catalyst composition which
is similar to the titanium-containing catalyst disclosed by
Toyota (see paragraph bridging pages 6 and 7 of Answer).
Accordingly, we fully concur with the examiner that it would
have been obvious for one of ordinary skill in the art to
utilize the titanium-containing catalyst of Kerth in the
process of Toyota "with the reasonable expectation of
obtaining the numerous advantages taught by Kerth" (page 5 of
Answer).
Appellants contend at page 4 of the principal brief that
"Toyota also fails to disclose agitated bed, gas phase
polymerization." However, as noted by the examiner, Toyota
specifically discloses that the polymerization may be
conducted in the gaseous phase (column 9, lines 21 and 22;
column 10, lines 22-25).
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