US PATENT SUBCLASS 162 / 40
.~.~.~ Without treatment or modification

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}
29  DF  .~ With regeneration, reclamation, reuse, recycling or destruction of digestion fluid {3}
37  DF  .~.~ Digestion fluid reused on different fibrous materials {2}
40.~.~.~ Without treatment or modification

DEFINITION

Classification: 162/40

(under subclass 37) Processes in which digestion fluid resulting from treatment of one batch of fibrous material is employed without treatment or modification for treatment of a different batch of fibrous material.