US PATENT SUBCLASS 430 / 552
.~.~.~.~ Phenol or naphthol coupler

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}
541  DF  .~ Identified radiation sensitive composition with color producing substance {1}
542  DF  .~.~ Silver compound sensitizer {2}
543  DF  .~.~.~ Coupler containing {12}
552.~.~.~.~ Phenol or naphthol coupler {1}
553  DF  .~.~.~.~.~> Substituted at coupling position with other than hydrogen

DEFINITION

Classification: 430/552

Phenol or naphthol coupler:

(under subclass 543) Compositions containing a coupler in the form of a phenol or naphthol.

SEE OR SEARCH THIS CLASS, SUBCLASS:

384, for process involving exposed compositions of this subclass.