Appeal No. 95-0996
Application 07/943,025
173, 178 (CCPA 1967), cert. denied, 389 U.S. 1057
(1968)(“Where the legal conclusion of obviousness is not
supported by facts it cannot stand.”).
B. The Rejection Pursuant to 37 CFR § 1.196(b)
The requirements of the process of claim 1 have been
discussed above. Tachikawa II discloses a process for
copolymerizing ethylene with an alpha-olefin in the presence
of a Ziegler-Natta catalyst system (abstract and page 1, lines
7-10). This reference teaches that these catalyst systems
have a high catalytic activity which produces copolymer
particles with poor properties (page 1, lines 25-30).
Tachikawa II obviates this problem by temporarily inhibiting
catalyst activity as a result of contacting the catalyst with
an activity inhibitor (page 1, lines 30-35, and page 2, lines
5-9). The catalyst system of the reference is formed by
reacting a component containing titanium, halogen, and an
organometallic compound such as magnesium, with an aluminum
compound and an electron donor (page 2, line 10-page 7, line
13). The activity inhibitor of the reference includes carbon
monoxide and carbon dioxide (page 7, lines 14-16).3
All examples in the reference use carbon monoxide as the activity3
inhibitor except Example 5, which uses allene as the inhibitor. See pages
6
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