US PATENT SUBCLASS 209 / 577
.~.~.~ Infrared, visible light, or ultraviolet

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.~.~.~ Infrared, visible light, or ultraviolet {8}
578  DF  .~.~.~.~> Ultraviolet
579  DF  .~.~.~.~> Laser
580  DF  .~.~.~.~> Color detection {1}
583  DF  .~.~.~.~> Reading indicia {1}
585  DF  .~.~.~.~> Mirror or prism in optical path
586  DF  .~.~.~.~> Sizing
587  DF  .~.~.~.~> Reflected from item
588  DF  .~.~.~.~> Transmitted through item

DEFINITION

Classification: 209/577

Infrared, visible light, or ultraviolet:

(under subclass 576) Methods and apparatus utilizing infrared, visible light, or ultraviolet radiation.

(1) Note. To be included in this subclass and its indented subclasses as a patent involving visible light, the patent must (1) state that the radiant energy employed is light, or (2) set out specific wavelengths known to be visible.