US PATENT SUBCLASS 422 / 11
.~.~.~ Steam environment


Current as of: June, 1999
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422 /   HD   CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

1  DF  PROCESS DISINFECTING, PRESERVING, DEODORIZING, OR STERILIZING {15}
7  DF  .~ Maintaining environment nondestructive to metal {5}
9  DF  .~.~ Using gaseous preservative, preservative added to gaseous phase of environment, or maintaining gaseous phase nondestructive {2}
11.~.~.~ Steam environment


DEFINITION

Classification: 422/11

Steam environment:

(under subclass 9) Process wherein the gaseous phase is essentially water at a temperature above its boiling point at the prevailing pressure.