US PATENT SUBCLASS 204 / 459
.~.~.~ Isoelectric focusing (i.e., using pH variation)

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

*  DD  PROCESSES AND PRODUCTS {7}
450  DF  .~ Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere {14}
456  DF  .~.~ Gel electrophoresis {8}
459.~.~.~ Isoelectric focusing (i.e., using pH variation)

DEFINITION

Classification: 204/459

Isoelectric focusing (i.e., using pH variation):

(under subclass 456) Process in which a differential pH gradient is established in the medium to affect the migration of individual particles or components based on their different isoelectric points (the different pH values at which the net charge on each particle or component is neutral).

SEE OR SEARCH THIS CLASS, SUBCLASS:

548, for isoelectric focusing without using a gel.