Appeal No. 95-3336
Application No. 07/984,448
pressures, i.e., hot isostatic pressing (see Conder, column 6,
lines 14-21). Conders also teaches that “[a]cceptable bonding
is unlikely to take place below 1200EC.” (column 5, lines 27-
28). In fact, Conders defines “thermo-compression” as bonding
at a temperature in the range 1200EC. to 1750EC under a few
tens of grams weight to achieve light compression (column 3,
lines 1-3; column 4, lines 5-8; brief, sentence bridging pages
3-4).
There is no evidence in this record that CIP followed by
firing would have been suggested to the artisan as a
substitute for the “thermo-compression” as defined and limited
by Conder. There also is no evidence in this record that CIP
and firing would have been suggested to the artisan in view of
the limitations for bonding disclosed and taught by Conder.
The mere recognition in the secondary references that CIP
followed by firing can be used to join two ceramic compacts
provides no reason or suggestion for using this process in
place of the “thermo-compression” as defined and limited by
Conder. See In re Rouffet, 149 F.3d 1350, 1357, 47 USPQ2d
1453, 1458 (Fed. Cir. 1998).
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