US PATENT SUBCLASS 162 / 225
.~.~.~.~ Boards or sheets

Current as of: June, 1999
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162 /   HD   PAPER MAKING AND FIBER LIBERATION

100  DF  PROCESSES AND PRODUCTS {31}
218  DF  .~ Article forming processes (pulp molding) {7}
221  DF  .~.~ Treatment subsequent to removal from forming mold {3}
224  DF  .~.~.~ Heat and/or mechanical pressure {1}
225.~.~.~.~ Boards or sheets

DEFINITION

Classification: 162/225

(under subclass 224) Processes resulting in a product which is rectangular in a cross-section through its thickness.

(1) Note. Many of the patents in this subclass involve the simultaneous treatment of a plurality of boards or sheets.