US PATENT SUBCLASS 430 / 591
.~.~.~ Two or more separate ring structures

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}
564  DF  .~ Silver compound sensitizer containing {18}
570  DF  .~.~ Spectral sensitizing {6}
591.~.~.~ Two or more separate ring structures {1}
592  DF  .~.~.~.~> Intercyclic methine chain sensitizer {3}

DEFINITION

Classification: 430/591

Two or more separate ring structures:

(under subclass 570) Subject matter in which the added material comprises a compound containing at least two distinct cyclic nuclei, e.g.,

(1) Note. Many of the sensitizers in this and indented subclasses are merocyanines.

SEE OR SEARCH THIS CLASS, SUBCLASS:

577, for similar compositions containing with a cyanine compound and a merocyanine compound.