US PATENT SUBCLASS 430 / 470
.~.~ Coupler containing

Current as of: June, 1999
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430 /   HD   RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF

449  DF  NONRADIATION SENSITIVE IMAGE PROCESSING COMPOSITIONS OR PROCESS OF MAKING {7}
464  DF  .~ Developer {10}
470.~.~ Coupler containing {6}
471  DF  .~.~.~> And additional reactive compound containing
472  DF  .~.~.~> Substituted at coupling position with other than hydrogen
473  DF  .~.~.~> Phenol or naphthol coupler
474  DF  .~.~.~> Pyrazolone coupler
475  DF  .~.~.~> Open-chain keto methylene coupler
476  DF  .~.~.~> Heterocyclic coupler

DEFINITION

Classification: 430/470

Coupler containing:

(under subclass 464) Compositions having an ingredient which reacts with the oxidation product of the color developer during development to produce a colored dye.