US PATENT SUBCLASS 44 / 251
.~ Activatable by or containing water

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

250  DF  FLAMELESS OR GLOWLESS {1}
251.~ Activatable by or containing water {1}
252  DF  .~.~> Free metal-containing {1}

DEFINITION

Classification: 44/251

Activatable by or containing water:

(under subclass 250) Subject matter in which the composition requires the presence of water (free or combined as water of crystallization) in order to produce its exothermic effect.

SEE OR SEARCH CLASS

252, Compositions,

157, for gas-generating compositions, which may be exothermic, intended solely for cleaning, for example, drains, and a process for cleaning which merely uses a composition suitable for this subclass.