US PATENT SUBCLASS 117 / 219
.~.~ Having means for producing a moving solid-liquid-solid zone

Current as of: June, 1999
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117 /   HD   SINGLE-CRYSTAL, ORIENTED-CRYSTAL, AND EPITAXY GROWTH PROCESSES; NON-COATING APPARATUS THEREFOR

200  DF  APPARATUS {4}
206  DF  .~ For crystallization from liquid or supercritical state {5}
219.~.~ Having means for producing a moving solid-liquid-solid zone {3}
220  DF  .~.~.~> Includin a solid member other than seed or product contacting the liquid (e.g., crucible, immersed heating element)
221  DF  .~.~.~> Havind details of a stabilizing feature
222  DF  .~.~.~> Including heating or cooling details

DEFINITION

Classification: 117/219

Having means for producing a moving solid-liquid-solid zone:

(under subclass 206) Subject matter including means for subjecting solid precursor* material to localized heating to liquefy a region, thereby forming two solid-liquid interfaces, usually substantially parallel to each other, followed by moving the means of heating or moving said solid precursor* so as to effect additional liquid formation at one interface and concomitant cooling at the other interface, thereby obtaining single-crystal* product at the trailing solidifying interface.

(1) Note. Common terminology includes crucible-free or floating zone melting apparatus.

(2) Note. This subclass and its indents include apparatus having means for introducing an additional component so as to prepare a product of different composition than the starting solid.

(3) Note. See the (5) Note located in subclass 13 for discussion of distinguishing characteristics among several liquid phase processes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

37+, for corresponding processes.