US PATENT SUBCLASS 162 / 35
.~.~.~ Residue converted into liquor different from original 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}
29  DF  .~ With regeneration, reclamation, reuse, recycling or destruction of digestion fluid {3}
30.1  DF  .~.~ With destruction of organic ingredient in or smelting of liquor {7}
35.~.~.~ Residue converted into liquor different from original liquor


DEFINITION

Classification: 162/35

(under subclass 30) Processes in which waste liquor is

subjected to a destruction of contained organic material or is smelted and subsequently the residue is reconstituted into a cellulose liberation liquor which is chemically different than that originally employed for treating the fibrous material.

(1) Note. This subclass provides, for example, for the treatment of the waste liquor from a "sulfate" process by smelting and converting the residue into a sulfite type cellulose liberation liquor.