Appeal No. 96-1145
Application 08/203,768
reaction mass located in the volume, the reaction mass
comprising a plurality of seed crystals located in or on a
surface and a carbon source separated from the seed particles
by a mass of metallic solvent for diamond synthesis, the mass
comprising a plurality of alternating zones of carbon-rich and
carbon-lean metallic solvent extending from the carbon source
to the seed particles,
and subjecting the reaction mass to conditions of
temperature and pressure in the diamond stable region of the
carbon phase diagram such that a temperature gradient is
created between the seed particles and the carbon source with
the seed particles being located at a point approaching the
lowest value of temperature for the temperature gradient and
the carbon source being located at a point approaching the
highest value of temperature for the temperature gradient and
maintaining these conditions for a time sufficient to produce
diamond crystals on the seed particles.
THE REFERENCES
Yazu et al. (Yazu) 4,632,817 Dec. 30, 1986
Tsuji 4,927,619 May 22, 1990
Yoshida et al. (Yoshida) 5,273,730 Dec. 28, 1993
(effective filing date Mar. 3,
1989)
THE REJECTIONS
The claims stand rejected as follows: claims 13, 16, 20,
22 and 26 under 35 U.S.C. § 102(b) as being anticipated by
Yazu; claims 13, 16, 18-22 and 24-26 under 35 U.S.C. § 103 as
being
obvious over Yazu; claims 14, 15, 17 and 23 under 35 U.S.C.
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007