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.