US PATENT SUBCLASS 204 / 450
.~ Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere

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

*  DD  PROCESSES AND PRODUCTS {7}
450.~ Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere {14}
451  DF  .~.~> Capillary electrophoresis {4}
456  DF  .~.~> Gel electrophoresis {8}
471  DF  .~.~> Coating or forming of object {13}
513  DF  .~.~> Hydrocarbon oil separated or purified {1}
515  DF  .~.~> Inorganic siliceous or calcareous material prepared, separated, or treated (e.g., clay, earth, concrete, asbestos, glass, etc.) {1}
518  DF  .~.~> Barrier separation (e.g., using membrane, filter paper, etc.) {5}
545  DF  .~.~> With use of nonelectrical field or force to separate (e.g., magnetic, centrifugal, etc.)
546  DF  .~.~> Absorbent strip electrophoresis (e.g., using cellulose acetate or paper strip, etc.)
547  DF  .~.~> Dielectrophoresis (i.e., using nonuniform electric field)
548  DF  .~.~> Isoelectric focusing (i.e., using pH variation)
549  DF  .~.~> Isotachophoresis (i.e., displacement electrophoresis) or measurement of ion or particle mobility
550  DF  .~.~> Ionophoresis
551  DF  .~.~> Solid sorption or desorption
553  DF  .~.~> Bulk separation of solids and liquids (e.g., dewatering solids, clarifying water, etc.)

DEFINITION

Classification: 204/450

Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere:

(under the class definition) Subject matter drawn to (a) processes involving (1) the travel, transport, or relative movement of one or more particles or components in a conducting liquid or fluent material, other than a gas, under a net unidirectional electric stress or (2) the movement of a liquid inside the capillary spaces of a solid (e.g., membrane, etc.) under the influence of an electric field or (b) electrolyte compositions specialized for use in a process under (a) when not provided for elsewhere.

(1) Note. For the purpose of Class 204, "electrophoresis" is restricted to situations where the liquid or fluent material is electrically conductive and wherein there is at least one electrolytic phenomenon (e.g., electrode gas formation, etc.) inherently or otherwise taking place simultaneously with electromigration of the particles or components.

(2) Note. In electrophoresis, the moved particles or components usually are electrically charged.

SEE OR SEARCH THIS CLASS, SUBCLASS:

554+, for electrical separation or purification of liquid not involving electrolysis, electrophoresis, or electro-osmosis.

600+, for corresponding electrophoretic or electro-osmotic apparatus.

SEE OR SEARCH CLASS

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, appropriate subclasses for electrolytic processes. 340, Communications: Electrical, for various types of electrical communications systems and methods not provided for in other classes.

356, Optics: Measuring and Testing,

344, for processes of testing the change in refractive index of a fluid in an electrophoresis cell and the apparatus therefor and subclasses 128+ for refraction testing processes and apparatus therefor.

358, Facsimile, for pictorial communication systems and methods.

359, Optics: Systems (Including Communication) and Elements,

for optical elements and systems not provided for in other classes.

399, Electrophotography, for electrophotos:graphic processes and apparatus.