US PATENT SUBCLASS 162 / 67
.~.~.~ Chlorine dioxide

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}
63  DF  .~ Gas, vapor or mist contact {4}
66  DF  .~.~ Chlorine containing material {1}
67.~.~.~ Chlorine dioxide

DEFINITION

Classification: 162/67

(under subclass 66) Processes in which the gas or vapor is chlorine dioxide.