US PATENT SUBCLASS 44 / 561
.~.~.~ With pitch, tar, tar oil, or bitumen

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

550  DF  CONSOLIDATED SOLIDS (E.G., BRIQUETTE, ETC.) {5}
551  DF  .~ Containing specified binder {15}
559  DF  .~.~ With gypsum or silicon-containing material (e.g., clay, portland cement, water glass, etc.) {4}
561.~.~.~ With pitch, tar, tar oil, or bitumen

DEFINITION

Classification: 44/561

With pitch, tar, tar oil, or bitumen:

(under subclass 559) Subject matter wherein the consolidated solid fuel composition also contains a pitch, tar, tar oil, or bitumen as a component.

(1) Note. Bituminous coal is not a bitumen; asphalts and asphaltenes are bitumens.

(2) Note. Pitch, tar, and tar oil must be identified as such in order to be classified herein; pitch, tar, and tar oil from any source are classified herein.