US PATENT SUBCLASS 117 / 216
.~.~.~ Including a fully-sealed or vacuum-maintained crystallization chamber (e.g., ampoule)

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}
208  DF  .~.~ Seed pulling {7}
216.~.~.~ Including a fully-sealed or vacuum-maintained crystallization chamber (e.g., ampoule)

DEFINITION

Classification: 117/216

Including a fully-sealed or vacuum-maintained crystallization chamber (e.g., ampoule):

(under subclass 208) Subject matter in which the crystallization chamber is completely isolated from the exterior environment or communicates with it only through vacuum-maintaining means.