Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1973-11-02
1977-08-16
Meros, Edward J.
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
63 32, 106 42, 206538, 23289, C01B 3106
Patent
active
040426734
ABSTRACT:
Diamond crystals of controlled impurity content and/or impurity distribution and reaction vessel configurations for the production thereof are described. Combinations of "dopant," "getter" and "compensator" materials are employed to produce gem stones of unusual color patterns, or zoned coloration, using specific reaction vessel configurations.
REFERENCES:
patent: 3142595 (1964-07-01), Wentorf
patent: 3148161 (1964-09-01), Wentorf et al.
patent: 3268457 (1966-08-01), Giardini et al.
patent: 3297407 (1967-01-01), Wentorf
patent: 3310501 (1967-03-01), Darrow et al.
Armagnac "Popular Science" vol. 197, No. 3, 197, pp. 82, 83, 134, & 137.
"Jewelers' Circular-Keystone" July 1970 pp. 186-189.
General Electric Company
Hedman Edward A.
Meros Edward J.
Voss Donald J.
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