US PATENT SUBCLASS 430 / 153
.~ Physical development

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

141  DF  DIAZO REPRODUCTION, PROCESS, COMPOSITION, OR PRODUCT {7}
153.~ Physical development

DEFINITION

Classification: 430/153

Physical development:

(under subclass 141) Processes wherein a metal image formed by reaction of the diazo compound or the product produced by radiation exposure of the diazo compound in a medium is modified by replacing a more chemically active latent metal or metal of the image with a less active metal or metal ion.