Appeal No. 1997-1549
Application No. 08/208,143
the constituents in the impregnated cellular structure and
preferably at a temperature at which any ability of the binder
to absorb water is successively reduced, e.g. at least 500-
600EC” (page 3, lines 34-38).
Plank discloses a catalytic cracking catalyst made by
mixing a finely divided aluminosilicate and a siliceous
hydrogen such that the aluminosilicate is distributed
throughout and held in suspension in a matrix of the siliceous
hydrogel and the mixture is thermally activated at
approximately 500-1500EF (260-816EC) (col. 3, lines 30-40 and
54-67).
Appellants’ claim 1, which is the sole independent claim,
requires, inter alia, that the molded body has a breaking
strength of 10-150 N. Appellants argue that “[t]he Examiner
has pointed to nothing in the prior art which suggests that a
moulded body calcined at 850EC to 1100EC would have the
breaking strength of 10 to 150 N” (brief, page 15). The
examiner argues as follows (answer, pages 12-13):
No distinction is seen between a temperature
that is at least 500-600EC as set forth on page 3
lines 36-38 of the Hakansson reference and a
temperature ranging from 850 to 1100 EC as argued by
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