Appeal No. 97-4079
Application No. 08/310,592
polyketone polymer disclosed in Kastelic is said to be
particularly advantageous because it provides a melt
stabilized composition that may be readily processed into
fabricated objects which exhibit useful mechanical properties
(col. 4, lines 31-34).
In applying the test for obviousness, we reach the 2
conclusion that it would have been obvious to one having
ordinary skill in the art, from a combined assessment of the
Nadal and Kastelic teachings, to fabricate the worm gear and
the sector gear of Nadal using the polyketone polymer
disclosed in Kastelic. In our view, one of ordinary skill in
the art would have been motivated to manufacture the worm and
sector gears shown in Nadal using the polyketone material
disclosed in Kastelic based on the advantageous properties of
the polyketone material and would have had a reasonable
expectation of success in doing so based on Kastelic's
specific disclosure that the material disclosed therein was
particularly suitable for making gears.
2The test for obviousness is what the combined teachings
of the references would have suggested to one of ordinary
skill in the art. See In re Young, 927 F.2d 588, 591, 18
USPQ2d 1089, 1091 (Fed. Cir. 1991) and In re Keller, 642 F.2d
413, 425, 208 USPQ 871, 881 (CCPA 1881).
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