US PATENT SUBCLASS 162 / 97
.~.~ Cereal grasses or straws

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}
91  DF  .~ Particular raw cellulosic materials {8}
97.~.~ Cereal grasses or straws

DEFINITION

Classification: 162/97

(under subclass 91) Processes directed to the digestion or chemical treatment of a cereal grass or straw.

(1) Note. The most common cereals involved are wheat, rye, oat, barley and rice.