US PATENT SUBCLASS 162 / 62
.~.~ Concentration of 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}
61  DF  .~ Regulatory {1}
62.~.~ Concentration of chemicals

DEFINITION

Classification: 162/62

(under subclass 61) Processes in which the operating condition controlled is the concentration of a fiber treating agent.