US PATENT SUBCLASS 430 / 621
.~.~ Hardening ingredient containing

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}
564  DF  .~ Silver compound sensitizer containing {18}
621.~.~ Hardening ingredient containing {2}
622  DF  .~.~.~> Vinylidene compound
623  DF  .~.~.~> Heterocyclic compound {3}

DEFINITION

Classification: 430/621

Hardening ingredient containing:

(under subclass 564) Subject matter containing an organic colloid and an agent which tans or hardens the colloid.