US PATENT SUBCLASS 44 / 281
.~ The liquid medium is, or contains, hydrocarbon

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

280  DF  SOLID CARBONACEOUS FUEL DISPERSED IN A LIQUID MEDIUM (E.G., DISPERSED COAL, COKE, CARBON POWDER, PEAT, ETC.) {1}
281.~ The liquid medium is, or contains, hydrocarbon {1}
282  DF  .~.~> Liquid hydrocarbon, or liquid hydrocarbon and water, are the only components

DEFINITION

Classification: 44/281

The liquid medium is, or contains, hydrocarbon:

(under subclass 280) Compositions wherein liquid hydrocarbon constitutes all, or part of, the liquid medium.

(1) Note. Examples of compositions provided for herein are gasoline-coal-water slurries having additives such as

surfactants or stabilizers.

(2) Note. See (5) Note in the class definition for the definition of hydrocarbon.

SEE OR SEARCH CLASS

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

31+, for colloid systems of colloid-sized solid or semisolid phase dispersed in primarily organic continuous liquid phase, subclasses 38+ for colloid systems of colloid-sized bituminous, coal, or Carbon phase dispersed in aqueous continuous liquid phase, subclasses 77+ for colloid systems of colloid-sized solid phase dispersed in aqueous continuous liquid phase; subclass 901 for colloid system of substantially pure element Carbon; or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.