US PATENT SUBCLASS 95 / 285
.~ Coated or chemically treated filter


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

273  DF  FILTERING {7}
285.~ Coated or chemically treated filter


DEFINITION

Classification: 95/285

Coated or chemically treated filter:

(under subclass 273) Process in which the filter is coated or in which the filter is treated with a chemical before its use for filtration.