US PATENT SUBCLASS 424 / 124
.~.~ Ion exchange or chromatography

Current as of: June, 1999
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424 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

115  DF  FERMENTATE OF UNKNOWN CHEMICAL STRUCTURE {2}
123  DF  .~ Processes of making, purifying or recovering (nonfermentation) {1}
124.~.~ Ion exchange or chromatography

DEFINITION

Classification: 424/124

(under subclass 123) Processes utilizing an ion exchange or chromatos:graphic step.

SEE OR SEARCH THIS CLASS, SUBCLASS:

78.01, and see notes thereto, for an ion exchange type of solid synthetic organic polymer containing composition.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

656+, and 660+ for a process under the class definition for purifying a liquid.