US PATENT SUBCLASS 162 / 125
.~.~ Layers of different properties

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

100  DF  PROCESSES AND PRODUCTS {31}
123  DF  .~ Multi-layer waterlaid webs or sheets {3}
125.~.~ Layers of different properties {4}
126  DF  .~.~.~> Color
127  DF  .~.~.~> Organic additive
128  DF  .~.~.~> Inorganic additive
129  DF  .~.~.~> Fiber {2}

DEFINITION

Classification: 162/125

(under subclass 123) Processes in which at least one layer or the fibers thereof differ in some property from another layer or the fibers thereof, and the products thereof.

(1) Note. Examples of properties in which the layers may differ, provided for in this subclass are: density, thickness, width, and absorbency.