US PATENT SUBCLASS 430 / 156
.~.~.~ At least two radiation-sensitive layers

Current as of: June, 1999
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430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

141  DF  DIAZO REPRODUCTION, PROCESS, COMPOSITION, OR PRODUCT {7}
154  DF  .~ Composition or product which contains radiation sensitive compound having moiety of nitrogen double or triple bonded directly to nitrogen other than chromophore moiety, e.g., triazene containing product, etc., process of making, and composition or product used to finish or develop a diazo reproduction {3}
155  DF  .~.~ Product with at least two named layers {5}
156.~.~.~ At least two radiation-sensitive layers

DEFINITION

Classification: 430/156

At least two radiation-sensitive layers:

(under subclass 155) Products having at least two radiation-sensitive layers or coatings, one of which contains a radiation-sensitive diazo compound.