US PATENT SUBCLASS 430 / 573
.~.~.~.~ Polyheteronuclear sensitizer

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}
572  DF  .~.~.~ Multiple sensitizers or supersensitizing {4}
573.~.~.~.~ Polyheteronuclear sensitizer

DEFINITION

Classification: 430/573

Polyheteronuclear sensitizer:

(under subclass 572) Subject matter in which at least one of added materials is a compound having at least three distinct heterocyclic nuclei.

(1) Note. Heterocyclic groups which are fused together to form a multicyclic grouping are considered to be a single distinct heterocyclic nucleus. Thus and are each regarded as being a single heterocyclic nucleus.