US PATENT SUBCLASS 430 / 267
.~.~ And heterocyclic additive

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

264  DF  SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT {2}
265  DF  .~ Process using lithographic infectious developer {2}
267.~.~ And heterocyclic additive

DEFINITION

Classification: 430/267

And heterocyclic additive:

(under subclass 265) Processes wherein a heterocyclic compound is used during the finishing or perfecting procedure.