Appeal No. 1998-1281
Application No. 08/472,376
butadiene in the lube oil compositions wherein "the copolymer
contains 30-44 wt% of butadiene and 56-70 wt% of styrene and
wherein hydrogenation removes at least 95% of the olefins
unsaturation (See col. 2, lines 4-10)" (sentence bridging
pages 3 and 4 of answer). Finally, appellant does not contest
the reasoning underlying the examiner's legal conclusion that
"[i]t would have been obvious to
one of ordinary skill in the art to have utilized the styrene-
butadienes copolymers taught by Small in the composition of
Lal because (1) Lal desires a viscosity index improver, (2)
Jokinen teaches that those viscosity index improvers taught by
Lal are art recognized equivalents of styrene-butadiene
copolymers, and (3) Small teaches that the use of copolymers
of this type are conventional in the lubricant art" (page 4 of
answer, first paragraph).
It is appellant's contention that Jokinen does not
disclose the high degree of monounsaturation of the claimed
triglyceride oil, and that Small provides no teaching of
employing vegetable oils instead of synthetic lubricating oils
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007