.~.~ With lignin, lignin derivative, or sulfite liquor (e.g., lignones, lignosulfonates, etc.)
DEFINITION
Classification: 44/578
With lignin, lignin derivative, or sulfite liquor (e.g., lignones, lignosulfonates, etc.):
(under subclass 551) Subject matter wherein a lignin, lignin derivative, or sulfite liquor is a component in a consolidated solid fuel composition.
(1) Note. The lignin, lignin derivative, or sulfite liquor normally, but not necessarily, serves a binding function.
(2) Note. Lignin is an amorphous product of indeterminate structure that forms the lamella of many plant fibers, and cements the plant fibers together.
(3) Note. For purposes of this subclass, to be a lignin derivative, a substance must be identified as such; the prefix "ligno" is taken as prima facie indication of lignin derivation.
(4) Note. Sulfite liquor is the waste liquor from the pulping of wood by the sulfite process; lignosulfonates, ash, calcium compounds, free sulfur dioxide, etc. are components thereof.
(5) Note. Lignite is not considered as a lignin derivative for purposes of this subclass; rather, it is considered as a solid fuel and, as such, may be classified in any of subclass 551 or its indents when claimed in admixture with a specified binder.
