US PATENT SUBCLASS 430 / 590
.~.~.~.~.~.~ Only one hetero ring fused or bridged to carbocyclic ring

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}
581  DF  .~.~.~ Cyanine sensitizer {2}
583  DF  .~.~.~.~ Containing odd number of methine groups {2}
585  DF  .~.~.~.~.~ Three methine groups, i.e., carbocyanines {4}
590.~.~.~.~.~.~ Only one hetero ring fused or bridged to carbocyclic ring

DEFINITION

Classification: 430/590

Only one hetero ring fused or bridged to carbocyclic ring:

(under subclass 585) Subject matter in which one and only one of the two heterocyclic rings linked by the trimethine chain is fused or bridged to a carbocyclic ring, e.g., [figure]