US PATENT SUBCLASS 430 / 578
.~.~.~ Polyhetero nuclear containing at least three heterocyclic nuclei

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}
578.~.~.~ Polyhetero nuclear containing at least three heterocyclic nuclei {1}
579  DF  .~.~.~.~> Four or more distinct heterocyclic nuclei

DEFINITION

Classification: 430/578

Polyhetero nuclear containing at least three heteroCYCLIC nuclei:

(under subclass 570) Subject matter wherein the added material contains at least three distinct heterocylic nuclei.

(1) Note. See the definition of subclass 573 for the definition of distinct heterocyclic nuclei.