US PATENT SUBCLASS 422 / 9
.~.~ Using gaseous preservative, preservative added to gaseous phase of environment, or maintaining gaseous phase nondestructive

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.~.~ Using gaseous preservative, preservative added to gaseous phase of environment, or maintaining gaseous phase nondestructive {2}
10  DF  .~.~.~> Manipulating gaseous environment for preservative purpose
11  DF  .~.~.~> Steam environment

DEFINITION

Classification: 422/9

Using gaseous preservative, preservative added to gaseous phase of environment, or maintaining gaseous phase nondestructive:

(under subclass 7) Process wherein (a) the agent used to prevent damage to metal is a gas, (b) a substance is added to the gaseous phase to prevent damage to the metal contacted by the gaseous phase, or (c) the gaseous phase is treated to prevent it from damaging the metal.

SEE OR SEARCH CLASS

312, Supports: Cabinet Structure,

31+, for structures of that class combined with gas or vapor treatment of material.