US PATENT SUBCLASS 209 / 582
.~.~.~.~.~.~ Measuring ratio of sensed intensities


Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

509  DF  SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11}
552  DF  .~ Condition responsive means controls separating means {13}
576  DF  .~.~ Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof {3}
577  DF  .~.~.~ Infrared, visible light, or ultraviolet {8}
580  DF  .~.~.~.~ Color detection {1}
581  DF  .~.~.~.~.~ Intensity {1}
582.~.~.~.~.~.~ Measuring ratio of sensed intensities


DEFINITION

Classification: 209/582

Measuring ratio of sensed intensities:

(under subclass 581) Methods and apparatus wherein the ratio between color intensities of items is measured.