US PATENT SUBCLASS 162 / 76
.~.~.~ Acids, salts or esters

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}
70  DF  .~ Treatment with particular chemical {9}
72  DF  .~.~ Organic {5}
76.~.~.~ Acids, salts or esters

DEFINITION

Classification: 162/76

(under subclass 72) Processes in which an organic acid, salt or ester thereof is employed.