US PATENT SUBCLASS 430 / 64
.~.~.~ Blocking or barrier layer

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

31  DF  ELECTRIC OR MAGNETIC IMAGERY, E.G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT {18}
56  DF  .~ Radiation-sensitive composition or product {10}
60  DF  .~.~ Product having layer between radiation-conductive layer and base or support {3}
64.~.~.~ Blocking or barrier layer {1}
65  DF  .~.~.~.~> Inorganic containing

DEFINITION

Classification: 430/64

Blocking or barrier layer:

(under subclass 60) Products containing a blocking or barrier layer, e.g., a layer which retards dark decay, specifically named or identified by chemical or physical structure between a radiation-conductive layer and a base or support.