US PATENT SUBCLASS 162 / 78
.~.~ Per-compound (e.g., peroxide, perborate)

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}
78.~.~ Per-compound (e.g., peroxide, perborate)

DEFINITION

Classification: 162/78

(under subclass 70) Processes in which a so- called inorganic "per" compound is employed.

(1) Note. Includes as "per" compounds are those having oxygen atoms bonded to each other, as in hydrogen peroxide and sodium per perborate, for example, as well as other "per" compounds having oxygen containing anions such as perchlorates, permanganates, etc.