US PATENT SUBCLASS 162 / 16
.~.~ From waste liquor

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

1  DF  PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL {33}
14  DF  .~ Including recovery of organic by-product {2}
16.~.~ From waste liquor

DEFINITION

Classification: 162/16

(under subclass 14) Processes in which the organic material is recovered from waste fiber treating agent or liquor following its separation from the chemically treated fibers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29+, for digestion or chemical treating processes in which the digestion liquor or treating agent is recovered or reused for treatment of further quantities of fibrous material.