US PATENT SUBCLASS 430 / 506
.~.~.~ And containing plural layers sensitive to the same spectral region

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

495.1  DF  RADIATION SENSITIVE PRODUCT {7}
502  DF  .~ Two or more radiation-sensitive layers containing other than that characterized by the composition of a single sensitive layer {3}
503  DF  .~.~ Layers sensitive to different spectral regions {4}
506.~.~.~ And containing plural layers sensitive to the same spectral region

DEFINITION

Classification: 430/506

And containing plural layers sensitive to the same spectral region:

(under subclass 503) Subject matter further containing at least two layers which respond to the same portion of the electromagnetic spectrum.

(1) Note. Patents in this subclass necessarily contain at least three sensitive layers, two responsive to differing spectral regions, and a third layer of the same sensitivity as one of the first two.