US PATENT SUBCLASS 162 / 30.11
.~.~.~ Treatment of kraft pulping chemicals

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}
30.11.~.~.~ Treatment of kraft pulping chemicals

DEFINITION

Classification: 162/30.11

Treatment of kraft pulping chemicals:

(under subclass 30.1) Subject matter wherein the waste liquor being treated results from the kraft (i.e., sulfate) process for paper fiber liberation.