US PATENT SUBCLASS 264 / 621
.~ Utilizing sol or gel

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

603  DF  OUTSIDE OF MOLD SINTERING OR VITRIFYING OF SHAPED INORGANIC ARTICLE OR PREFORM {30}
621.~ Utilizing sol or gel {2}
622  DF  .~.~> Unconfined drawing or extending of plastic mass to form article
623  DF  .~.~> Shaping by extrusion (e.g., spinning, etc.)

DEFINITION

Classification: 264/621

Utilizing sol or gel:

(under subclass 603) Process wherein either (a) a liquid colloidal suspension, or (b) a colloid in which the disperse phase has combined with the continuous phase to produce a viscous, jelly-like material, is utilized at any stage.