US PATENT SUBCLASS 430 / 565
.~.~ Achromatic image forming organic 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}
565.~.~ Achromatic image forming organic compound

DEFINITION

Classification: 430/565

Achromatic image forming organic compound:

(under subclass 564) Products containing an organic compound which reacts with suitable developing material to form a black organic compound in image areas.

(1) Note. These patents are usually to organic compounds which couple with a developer to form a black dye in a manner analogous to the reactions used to form cyan, magenta, or yellow dyes in color photography.