US PATENT SUBCLASS 95 / 79
.~ Plural separate stages or zones (e.g., separate ionization and collection regions, etc.)

Current as of: June, 1999
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95 /   HD   GAS SEPARATION: PROCESSES

57  DF  ELECTRIC OR ELECTROSTATIC FIELD (E.G., ELECTROSTATIC PRECIPITATION, ETC.) {9}
79.~ Plural separate stages or zones (e.g., separate ionization and collection regions, etc.) {1}
80  DF  .~.~> Pulsing or time-varying electric field (e.g., AC, pulsed DC, etc.)

DEFINITION

Classification: 95/79

Plural separate stages or zones (e.g., separate ionization and collection regions, etc.):

(under subclass 57) Process in which a gaseous fluid mixture passes through two or more distinct regions or units, such regions providing either multiple identical gas treatments or plural diverse treatments for removal of entrained particles.

(1) Note. The stages or zones may be arranged in series or in parallel.

(2) Note. A single stage with two or more regions or zones of differing applied voltage is included under this definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

63+, for processes with nonelectrical gas separating steps.

SEE OR SEARCH CLASS

96, Gas Separation: Apparatus,

55+, for electrical separation apparatus with serial diverse separators and subclasses 75+ for electrical separation apparatus with diverse or serially distinct electrical fields.