US PATENT SUBCLASS 430 / 155
.~.~ Product with at least two named 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.~.~ Product with at least two named layers {5}
156  DF  .~.~.~> At least two radiation-sensitive layers
157  DF  .~.~.~> Diazonium compound containing layer {3}
164  DF  .~.~.~> Diazo-N-sulfonate containing layer
165  DF  .~.~.~> Quinone diazide containing layer {1}
167  DF  .~.~.~> Azide containing layer

DEFINITION

Classification: 430/155

Product with at least two named layers:

(under subclass 154) Products having at least two named layers. The base is considered a layer for this subclass. The named layers are each significantly identified to exclude other layers. For example, a transparent or paper support having a diazo compound containing coating is considered a product. However, a support having a coating of a diazonium salt is not.