Appeal no. 97-1293
Application no. 08/281,812
sintering the handleable green body in an inert atmosphere to
form the sintered body (col. 8, lines 67 and 68; col. 9, lines 1-
12 and 52-59; and col. 10, lines 1-39).
Titanium diboride as a ceramic powder, among 136 listed
possibilities (col. 1, lines 17-22; Tables 1(a), (b), (c)).
Preceramic organosilicon polymer in the range of 0.05-20 wt% (col.
9, line 52, through col. 10, line 2).
Preceramic organosilicon polymer resulting in silicon and carbon,
which in turn leads to the production of silicon carbide (SiC),
after sintering (col. 9, lines 5-12). This teaching apparently
meets the claim proviso that “the preceramic organosilicon
polymer is one which provides a char containing silicon and
carbon and the carbon is present in at least a stoichiometric
amount based on the silicon content”. As disclosed at p. 4,
lines 17-20, of the present specification , the char must contain
at least enough carbon to form SiC.
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