US PATENT SUBCLASS 210 / 198.3
.~.~ Thin layer, e.g., plate, etc.

Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

198.1  DF  WITH MEANS TO ADD TREATING MATERIAL {5}
198.2  DF  .~ Chromatography {1}
198.3.~.~ Thin layer, e.g., plate, etc.

DEFINITION

Classification: 210/198.3

Thin layer, e.g., plate, etc:

Apparatus under subclass under 198.2 utilizing an absorbent cake spread on usually a smooth plate to a depth of about 0.5 mm.