US PATENT SUBCLASS 313 / 523
PHOTOSENSITIVE

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

523PHOTOSENSITIVE {12}
524  DF  .~> With optical device
525  DF  .~> Having phosphor screen {5}
531  DF  .~> Having plural photosensitive electrodes
532  DF  .~> Photomultiplier {1}
537  DF  .~> Having a control electrode
538  DF  .~> Gas phototube
539  DF  .~> Responsive to ultraviolet radiation
540  DF  .~> Having plural anodes or cathodes
541  DF  .~> Having photocathode on tube wall
542  DF  .~> Photocathode {2}
103 R  DF  .~> Secondary emitter type (e.g., electron multiplier) {1}
104  DF  .~> Plural secondary emissive electrodes {1}

DEFINITION

Classification: 313/523

PHOTOSENSITIVE:

(under the class definition) Subject matter which includes an electric lamp or discharge device having an electrode or electrical element which will react photoelectrically to electromagnetic radiation of the visible and certain invisible types not classified elsewhere.

(1) Note. "Photoelectric" is the effect of electromagnetic radiation on material which causes photoconductive, photoemissive, photovoltaic and photoelectromagnetic effects.

(2) Note. Included are lamp or discharge devices responsive

to X-ray, ultraviolet, visile and infrared radiation.

(3) Note. Also included are subcombinations of an electric lamp or discharge device having a photosensitive member, incomplete photosensitive devices of this class which will react photoelectrically when completed and photocathodes not classified else where.

(4) Note. Included are photocathodes, per se.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+, for a structurally combined lamp and discharge device, plural lamps or plural discharge devices. 7+, for a lamp or discharge device with a vacuum pump.

11+, for a lamp or discharge device with a temperature modifier.

54+, for a lamp or discharge device with radioactive material.

93, for a geiger-mueller counter tube.

373+, for a cathode-ray tube with a photoemissive cathode.

384+, for a cathode-ray tube with a photoconductive cathode.

SEE OR SEARCH CLASS

65, Glass Manufacturing,

138+, for electronic envelope header, terminal or stem making means.

136, Batteries: Thermoelectric and Photoelectric,

243+, for a photoelectric device, particularly subclass 254 for photoemissive devices.

148, Metal Treatment, 317+, for coated stock material which can be a photocathode.

204, Chemistry: Electrical and Wave Energy,

192.1+, for forming a photosensitive member by cathode sputtering.

220, Receptacles,

2.1, for an envelope of an electric lamp or similar device.

250, Radiant Energy,

200, for photocell circuits and apparatus, subclasses 330+

for infrared to visible imaging, and subclasses 336.1+ for invisible radiant energy responsive electric signalling.

252, Compositions,

501.1, for light sensitive electrically conductive or emissive compositions.

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes),

10, 11, 21, 53-56, 113-118, 184-189, 225-234, 257, 258, 290-294, and 414-466 for radiation-sensitive active semiconductor devices, subclasses 13, 79-103, and 918 for incoherent light emitting injection luminescent devices, subclasses 80-85 for semiconductor light emitting sources combined with semiconductor light responsive devices, and subclasses 613+ for active semiconductor injection luminescent devices containing group II-VI compounds. 307, Electrical Transmission or Interconnection Systems,

117, for switching systems responsive to light or radiant energy.

315, Electric Lamp and Discharge Devices: Systems,

149+, for such a system with radiant energy sensitive control means.

318, Electricity: Motive Power Systems,

640, for photoelectric or optical error detecting positional servo systems, and subclass 480 for radiant energy responsive automatic and/or with time delay means motive power systems.

324, Electricity: Measuring and Testing,

403+, for electric lamp or discharge device testing.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

514+, for miscellaneous circuits responsive to light.

331, Oscillators,

66, for a light responsive oscillator. 338, Electrical Resistors,

15+, for electric resistors which change resistance responsive to electromagnetic radiation.

348, Television, appropriate subclasses.

356, Optics: Measuring and Testing, particularly

402+, for testing shade or color and subclasses 213+ for photometers.

361, Electricity: Electrical Systems and Devices,

173+, for control circuits for electromagnetic devices including light responsive control circuits.

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

1+, for specific applications.

396, Photography,

213+, for a photos:graphic exposure control circuit which is light responsive. 427, Coating Processes,

74+, for processes of making photocathodes by coating a base and subclasses 160+ for X-ray, ultraviolet or infrared responsive coatings.

428, Stock Material or Miscellaneous Articles,

98+, for a structurally defined web or sheet which may have photosensitive properties.

438, Semiconductor Device Manufacturing: Process,

20, for methods of making semiconductor-based electron emitters, subclasses 22+ for methods of making light emissive semiconductor devices, and subclasses 57+ for methods of making light responsive semiconductor devices.

445, Electric Lamp or Space Discharge Component or Device Manufacturing,

1+, for a method of manufacture, repair or salvage and subclasses 66+ for apparatus used in manufacture, repair or salvage

455, Telecommunications,

600, for light wave communications.