Appeal No. 1998-0239
Application No. 08/279,907
the preselected temperature at which said dental composition
is to be heat treated, with said particles having an irregular
non-spherical geometry of which at least 50% have a cross-
sectional average thickness of less than 1.5 microns, at least
about 20% and up to 85% by volume of a volatile binder and
carbonaceous particles in a concentration above at least 0.005
wt.% of the dental composition.
4. A moldable dental composition as defined in claim 3,
wherein the determination of at least 50% of said particles
having an average thickness of less than 1.5 microns is
established by measuring the surface area of the largest two
dimensional surface of each high fusing temperature metal
particle, computing the total two dimensional surface area for
all of the high fusing temperature metal particles in said
composition and dividing the cumulative surface area of the
high fusing temperature metal particles below 1.5 microns in
average thickness by the total two dimensional surface area
for all of the particles.
The examiner has not cited prior art in rejecting the
appealed claims.
Appellants' claimed invention is directed to a moldable
dental composition comprising high-fusing temperature metal
particles having an irregular non-spherical geometry of which
at least 50% have a cross-sectional average thickness of less
than 1.5 microns.
Appealed claims 1-12 stand rejected under 35 U.S.C.
§ 112, second paragraph.1
1The examiner's rejection under the judicially created
doctrine of obviousness-type double patenting has been
(continued...)
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