US PATENT SUBCLASS 95 / 98
.~.~.~.~ Feed gas or constituent thereof is sweep gas

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

90  DF  SOLID SORPTION {8}
95  DF  .~ Including reduction of pressure {3}
96  DF  .~.~ Plural pressure varying steps (e.g., pressure swing adsorption, etc.) {2}
97  DF  .~.~.~ Sweep gas used {1}
98.~.~.~.~ Feed gas or constituent thereof is sweep gas {3}
99  DF  .~.~.~.~.~> With heating or cooling
100  DF  .~.~.~.~.~> Stepped pressure reduction {1}
102  DF  .~.~.~.~.~> Vacuum applied

DEFINITION

Classification: 95/98

Feed gas or constituent thereof is sweep gas:

(under subclass 97) Process in which the sweep gas is the gaseous fluid mixture or a portion thereof, before or after being treated or separated.