US PATENT SUBCLASS 430 / 577
.~.~.~.~.~ Merocyanine compound

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}
576  DF  .~.~.~.~ Cyanine sensitizer {1}
577.~.~.~.~.~ Merocyanine compound

DEFINITION

Classification: 430/577

Merocyanine compound:

(under subclass 576) Subject matter in which one of the added materials is a merocyanine, i.e., a compound having two cyclic nuclei joined through a straight chain linkage containing at least one methine group, which chain has an equal number of alternating single and double bonds, of which one terminal carbon atom is in a heterocyclic ring and attached to an extra cyclic carbonyl O, and the other terminal carbon atom is in another heterocyclic ring and is attached to a heterocyclic N.