US PATENT SUBCLASS 162 / 6
.~.~ With chlorine, chlorine compounds, oxygen, ozone, or per-compounds

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}
4  DF  .~ Waste paper or textile waste {4}
6.~.~ With chlorine, chlorine compounds, oxygen, ozone, or per-compounds

DEFINITION

Classification: 162/6

(under subclass 4) Processes in which elemental chlorine, a chlorine compound, oxygen, ozone or a percompound is employed.

(1) Note. Example of percompounds are hydrogen peroxide, sodium perborate and potassium permanganate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73, 74 and 87+, for processes of digesting or treating nonwaste or unused cellulose in which chlorine or a chlorine compound is employed.

78, for processes of digesting a treating nonwaste or unused cellulose in which a percompound is employed.