US PATENT SUBCLASS 75 / 713
.~.~.~.~ From photography material

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
392  DF  .~ Producing or treating free metal {10}
710  DF  .~.~ Below 300 degrees C {2}
711  DF  .~.~.~ Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) {11}
713.~.~.~.~ From photography material

DEFINITION

Classification: 75/713

From photography material:

(under subclass 711) Process wherein the free metal is recovered from photography materials or developing solutions.

SEE OR SEARCH CLASS

430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, particularly

398+, for processes of regenerating processing compositions. If a regenerated processing composition is the intended result, the original goes to Class 430 with a mandatory cross to Class 75 if free metal (e.g., Silver (Ag), etc.) is also recovered.