US PATENT SUBCLASS 117 / 4
PROCESSES OF GROWTH FROM SOLID OR GEL STATE (E.G., SOLID PHASE RECRYSTALLIZATION)

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

4PROCESSES OF GROWTH FROM SOLID OR GEL STATE (E.G., SOLID PHASE RECRYSTALLIZATION) {3}
5  DF  .~> Organic product
6  DF  .~> At pressure above 1 atmosphere
7  DF  .~> Using heat (e.g., strain annealing) {3}

DEFINITION

Classification: 117/4

PROCESSES OF GROWTH FROM SOLID OR GEL STATE (E.G., SOLID PHASE RECRYSTALLIZATION):

(under the class definition) Subject matter which includes a step forming single-crystal* from an immediate-precursor* in solid or gel state.

(1) Note. This definition does not include processes in which the solid or gel passes through another state other than a gel or solid immediately prior to crystal formation. Thus, the dissolving of a solid nutrient* into a liquid would be considered passing through another state and placement would be proper in Class 117, subclasses 11+, even though some solid state nutrient* may be constantly supplying precursor to the dissolving vehicle during the crystal formation (e.g., in a spatially separated nutrient* zone).

(2) Note. Per se heat treating to de-twin involves the elimination of crystal boundary while in the solid state and hence is placed here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

200+, for corresponding apparatus, other than coating apparatus.