US PATENT SUBCLASS 162 / 171
.~.~ Bitumen

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

100  DF  PROCESSES AND PRODUCTS {31}
158  DF  .~ Non-fiber additive {16}
171.~.~ Bitumen

DEFINITION

Classification: 162/171

(under subclass 158) Processes and products which include a bituminous material such as asphalt, tar, tarry residues, etc.

SEE OR SEARCH CLASS

106, Compositions: Coating or Plastic, particularly

164.12, 164.6, 166.7, 169.54, 170.56, and 196.1 for compositions comprising cellulose and bituminous material which are not deposited from a liquid suspension.