US PATENT SUBCLASS 422 / 42
.~.~.~ By preventing evaporation


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}
40  DF  .~ Process of storage or protection {1}
41  DF  .~.~ Of liquid {1}
42.~.~.~ By preventing evaporation {1}
43  DF  .~.~.~.~> Of water


DEFINITION

Classification: 422/42

By preventing evaporation:

(under subclass 41) Process wherein the liquid is protected against loss by evaporation.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

9+, for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.