US PATENT SUBCLASS 430 / 520
.~.~.~ Triarylmethane

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}
510  DF  .~ Antihalation or filter layer containing {4}
517  DF  .~.~ Organic dye or pigment containing {5}
520.~.~.~ Triarylmethane

DEFINITION

Classification: 430/520

Triarylmethane:

(under subclass 517) Subject matter wherein the organic dye or pigment contains three discrete aryl nuclei bonded through nuclear carbons thereof to a methane carbon.