Appeal No. 2002-1401
Application No. 09/187/226
(A) charging aluminum nitride powder particles
into a container provided in a molten metal pressure
apparatus;
(B) applying pressure to the aluminum nitride
powder particles in the container;
(C) pouring a molten aluminum base material into
the container; and,
(D) applying pressure to the molten aluminum base
material in the container to fill the aluminum base
material in a space between the aluminum nitride powder
particles,
wherein a pore ratio of said composite material is minimized
by providing said aluminum nitride particles with a first set of
particles having an average particle size of R, and a second set
of particles having an average particle size ranging from 3R to
5R, where a volume concentration of said first set of particles
is between 3 and 5 times a volume concentration of said second
set of particles.
THE REFERENCES
Premkumar et al. (Premkumar) 5,775,403 Jul. 7, 1998
Young 5,941,297 Aug. 24, 1999
(filed Sep. 23, 1996)
Siemens AG (FR ‘878)1 2,028,878 Oct. 16, 1970
(French patent application)
THE REJECTIONS
Claims 15-18 stand rejected under 35 U.S.C. § 112, second
paragraph, as being indefinite for failing to particularly point
out and distinctly claim the subject matter which the appellants
regard as the invention. Claims 1-7, 9-22 and 24-26 stand
rejected under 35 U.S.C. § 103 as follows: claims 1, 2, 7, 9-11,
1 Citations herein to FR ‘878 are to an English translation
thereof, a copy of which is provided to the appellants with this
decision.
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