Chemical apparatus and process disinfecting – deodorizing – preser – Physical type apparatus – Crystallizer
Patent
1986-08-27
1988-06-21
Doll, John
Chemical apparatus and process disinfecting, deodorizing, preser
Physical type apparatus
Crystallizer
156DIG73, 156DIG96, 156603, 373139, 422249, 432122, C30B 1304, C30B 3500
Patent
active
047524510
ABSTRACT:
The process involves producing a monocrystal from the ferroelectric compound, annealing the monocrystal and cooling the latter in a zero longitudinal temperature gradient. The apparatus comprises means for producing the monocrystal, and heating means for annealing the monocrystal in a zero temperature gradient, as well as for cooling the monocrystal in a zero longitudinal temperature gradient after annealing. The strain-free monocrystals may be used in the production of surface wave filters, modulators and optical amplifiers.
REFERENCES:
patent: 2879189 (1959-03-01), Shockley
patent: 3238024 (1966-03-01), Cremer et al.
patent: 3644097 (1972-01-01), Knudsen
patent: 3857679 (1974-12-01), Allred
patent: 3939035 (1976-02-01), Keller
Nassau et al., Ferroelectric Lithium 2, Preparation of Single Domain Crystals, Bell Telephone Laboratories, Received Oct. 8, 1965, pp. 1 to 4.
Aubert Jean-Jacques
Bechevet Bernard
Daval Jacques
Commissariat a l''Energie Atomique
Doll John
Kunemund Robert M.
Meller Michael N.
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