(under subclass 158) Processes and products in which the additive is derived in whole or in part from the fibers being treated.
(1) Note. The nonfiber material may be extracted from the raw fiber-containing material and later added to the same
batch of material from which it was derived, or to a different batch. The nonfiber material may also be the reaction product of an original constituent of the plant, such as a gum, wax, resin, lignin, etc., and an externally applied reagent. It may also be present as the result of redistribution within the fiber, as where it is desired to have the constituent uniformly distributed within the fiber.
(2) Note. The fact that the fiber present in a process or product claimed is identified as "lignocellulose" is not, by itself, a sufficient basis for classification in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
11, for processes involving the steps of chemical liberation or purification, and adding to or retaining with the fibers, a nonfiber material of the type provided for in subclass 163.
