US PATENT SUBCLASS 250 / 483.1
.~ Luminescent device

Current as of: June, 1999
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250 /   HD   RADIANT ENERGY

472.1  DF  INVISIBLE RADIATION RESPONSIVE NONELECTRIC SIGNALLING {4}
483.1.~ Luminescent device {4}
484.2  DF  .~.~> Requiring an additional energy source to cause luminescence {2}
485.1  DF  .~.~> With light excluding casing having an aperture
486.1  DF  .~.~> With plural luminescent material or plural luminescent containing layers or areas
487.1  DF  .~.~> With optical member of material to directly modify luminous energy {1}

DEFINITION

Classification: 250/483.1

Luminescent device:

(under subclass 472.1) Subject matter which includes a significant structure which includes material which emits luminous energy when excited by particle or electromagnetic wave energy where not elsewhere classified.

SEE OR SEARCH CLASS

252, Compositions,

188.3, for chemical luminescence compositions; and subclasses 301.16+ for fluorescent and phosphorescent compositions.

313, Electric Lamp and Discharge Devices,

483+, for electroluminescent devices.

362, Illumination, 84, for decorative electroluminescent panels.

378, X-Ray or Gamma Ray Systems or Devices,

44+, for X-ray fluorescence analysis; and subclasses 190+ for fluoroscopes.

427, Coating Processes,

157+, for coating processes in general wherein a florescent or phosphorescent coating is used and where no radiant properties or multilayered luminescent coating are claimed.

428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product in the form of a single or plural layer web or sheet which may have luminescent properties, and especially

917, (a cross-reference art collection) for products which are electroluminescent.