US PATENT SUBCLASS 44 / 500
PARTICULATE (E.G., POWDERED, ETC.)

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

500PARTICULATE (E.G., POWDERED, ETC.) {5}
501  DF  .~> Treated to reduce spontaneous ignition
502  DF  .~> Solid particle containing liquid fuel
503  DF  .~> Mixed with particles of different size
504  DF  .~> Mixed with particles of different composition
505  DF  .~> Process including removal of undesirable

DEFINITION

Classification: 44/500

PARTICULATE (E.G., POWDERED, ETC):

(under the class definition) Product or process comprising a mass of solid fuel particles, each particle of which generally is too small to be manipulated individually by a human hand.

(1) Note. A process for comminuting solid fuel to achieve a powdered state is included in this subclass when the comminution is the only step of the process, is the final step of a multi-step procedure or is otherwise not merely incidental to subsequent treatment step, e.g., purification, etc., of a fuel substance.

SEE OR SEARCH THIS CLASS, SUBCLASS:

595, for a fuel consolidation process using a specified comminuting condition or technique.

SEE OR SEARCH CLASS

201, Distillation: Processes, Thermolytic,

42, for a collection of patents concerned with the particle size of a material fed to a process of that class (201).