US PATENT SUBCLASS 430 / 472
.~.~.~ 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

449  DF  NONRADIATION SENSITIVE IMAGE PROCESSING COMPOSITIONS OR PROCESS OF MAKING {7}
464  DF  .~ Developer {10}
470  DF  .~.~ Coupler containing {6}
472.~.~.~ Substituted at coupling position with other than hydrogen


DEFINITION

Classification: 430/472

Substituted at coupling position with other than hydrogen:

(under subclass 470) Compositions containing a group other than hydrogen attached to the coupling position which is removed during processing, usually two-equivalent.