US PATENT SUBCLASS 430 / 640
.~.~.~ Gelatin or derivative 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}
639  DF  .~.~ Carbohydrate or derivative containing {2}
640.~.~.~ Gelatin or derivative containing

DEFINITION

Classification: 430/640

Gelatin or derivative containing:

(under subclass 639) Subject matter containing gelatin or a gelatin derivative in addition to the carbohydrate or its derivative.

SEE OR SEARCH CLASS

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,

98+, for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.