US PATENT SUBCLASS 422 / 250.1
.~.~ Crucible-free zone refiner

Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

243  DF  PHYSICAL TYPE APPARATUS {8}
245.1  DF  .~ Crystallizer {5}
250.1.~.~ Crucible-free zone refiner

DEFINITION

Classification: 422/250.1

Crucible-free zone refiner:

(under subclass 245.1) Apparatus having a refining zone which is free of contact with a solid shaping surface such as a crucible (wall).