US PATENT SUBCLASS 203 / 3
.~ Of concentration

Current as of: June, 1999
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203 /   HD   DISTILLATION: PROCESSES, SEPARATORY

1  DF  WITH MEASURING, TESTING OR INSPECTING {2}
3.~ Of concentration

DEFINITION

Classification: 203/3

(under subclass 1) Processes including the steps of determining the concentration of the feed, vapor, residue or condensate.

SEE OR SEARCH CLASS

73, Measuring and Testing,

32+, for apparatus for determining density and/or specific gravity of a liquid.

137, Fluid Handling,

2+, for a process of fluid handling in which one or more characteristics or conditions of a fluent material are determined.

356, Optics: Measuring and Testing, 345+, for interferometers and subclasses 128+ for refractometers.