US PATENT SUBCLASS 313 / 525
.~ Having phosphor screen

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

523  DF  PHOTOSENSITIVE {12}
525.~ Having phosphor screen {5}
526  DF  .~.~> Proximity focus type
527  DF  .~.~> Photocathode responsive to phosphor
528  DF  .~.~> With electron multiplier
529  DF  .~.~> With control electrode
530  DF  .~.~> With photocathode on envelope

DEFINITION

Classification: 313/525

Having phosphor screen:

(under subclass 523) Subject matter wherein the lamp or discharge device includes within an envelope a photoemissive cathode or element which responds to electromagnetic radiation to emit electrons and a phosphor screen which converts, (1) the electrons emitted by the electrode or

device into electromagnetic radiation, or (2) electromagnetic radiation into different electromagnetic radiation to which the electrode or member is responsive to emit electrons.

(1) Note. The envelope is transmissive to electromagnetic radiation received through it from outside the envelope and transmissive of the electromagentic radiation released by the screen from the inside of the envelope.

(2) Note. See the class definitions, "Fluorescent and Phosphorescent Coating and Compositions" for a classification of such fluorescent and phosphorescent compositions, coatings, methods of coating and electrical devices using the same.

SEE OR SEARCH THIS CLASS, SUBCLASS:

461+, for cathode-ray tube with phosphor screen.

483+, for an electric lamp or discharge device with a luminescent solid or liquid material.

SEE OR SEARCH CLASS 216, Etching a Substrate: Processes,

25, for the manufacturing of a phosphor screen involving etching.

250, Radiant Energy,

213+, for light amplifier circuits, subclasses 337+ for invisible radiant energy responsive signalling with heating of luminophors, subclasses 361+ for invisible radiant energy responsive electric signalling including a luminophor, particularly subclass 366 having plural or composite phosphors, subclasses 458.1+ for a radiation source and a luminophor responsive to the source and subclasses 483.1+ for nonelectrical luminescent devices, per se, which detect invisible radiation.

252, Compositions,

301.16, for organic luminescent material containing compositions, subclass 301.36 for inorganic luminescent compositions with organic nonluminescent material and subclasses 301.4+ for inorganic luminescent compositions.

362, Illumination,

34, for chemiluminescent light, subclass 84 for a light source or light source support and luminescent material and subclass 260 for a fluorescent type light source or light source support and modifier.

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

42, for stereofluoroscopy and subclasses 44+ for fluorescent applications.

427, Coating Processes, 64+, for coating processes, per se, wherein the product is an electrical product with a fluorescent or phosphorescent base or coating.