Appeal No. 95-2245
Application No. 08,011,563
1577, 221 USPQ 929, 933 (Fed. Cir. 1984). This does not mean
that the cited prior art references must specifically suggest
making the combination. See B.F. Goodrich Co. V. Aircraft
Braking Systems Corp., 72 F.3d 1577, 1582, 37 USPQ2d 1314,
1318 (Fed. Cir. 1996); In re Nilssen, 851 F.2d 1401, 1403, 7
USPQ2d 1500, 1502 (Fed. Cir. 1988). Rather, the test for
obviousness is what the combined teachings of the references
would have suggested to those of ordinary skill in the art.
In re Young, 927 F.2d 588, 591, 18 USPQ2d 1089, 1091 (Fed.
Cir. 1991); In re Keller, 642 F.2d 413, 425, 208 USPQ 871, 881
(CCPA 1981).
The claimed subject matter is directed to a process
involving at least two positive steps, with the first step
being drawn to obtaining sintered titanium dioxide as a by-
product in preparation of titanium dioxide via a chloride
process and the second step being drawn to using the resultant
sintered titanium dioxide as a catalyst for promoting
hydrolysis of carbonyl sulfide in the presence of water. See
claim 1. According to page 1 of the specification, “a
chloride process” is defined as:
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