US PATENT SUBCLASS 430 / 550
.~.~.~.~ And chemical or optical sensitizer

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}
550.~.~.~.~ And chemical or optical sensitizer

DEFINITION

Classification: 430/550

And chemical or optical sensitizer:

(under subclass 543) Compositions containing an ingredient which increases the sensitivity of the silver compound, e.g., a chemical sensitizer or a hypersensitizer, or an ingredient which imparts its radiation absorption to the silver compound e.g., an optical sensitizing dye.

SEE OR SEARCH THIS CLASS, SUBCLASS:

377, for process involving the exposed compositions of this subclass.