US PATENT SUBCLASS 430 / 553
.~.~.~.~.~ Substituted at coupling position with other than hydrogen

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  DF  .~.~.~.~ Phenol or naphthol coupler {1}
553.~.~.~.~.~ Substituted at coupling position with other than hydrogen

DEFINITION

Classification: 430/553

Substituted at coupling position with other than hydrogen:

(under subclass 552) Compositions containing coupler having a group attached to the coupling position with other than hydrogen which is removed during processing, usually two-equivalent.

SEE OR SEARCH THIS CLASS, SUBCLASS:

385, for process involving exposed compositions of this subclass.

449, for nonradiation sensitive compositions applied to compositions of this subclass.