US PATENT SUBCLASS 250 / 338.1
.~ Infrared responsive

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

336.1  DF  INVISIBLE RADIANT ENERGY RESPONSIVE ELECTRIC SIGNALLING {16}
338.1.~ Infrared responsive {12}
338.2  DF  .~.~> Ferroelectric, ferromagnetic, photomagnetic types
338.3  DF  .~.~> Pyroelectric type
338.4  DF  .~.~> Semiconducting type
338.5  DF  .~.~> With means to analyze uncontained fluent material
339.01  DF  .~.~> With selection of plural discrete wavelengths or bands {6}
340  DF  .~.~> Methods {2}
343  DF  .~.~> With means to transmission-test contained fluent material {2}
347  DF  .~.~> With movable beam deflector or focussing means {1}
349  DF  .~.~> Plural signalling means {1}
351  DF  .~.~> With periodic beam varying means
352  DF  .~.~> With temperature modifying means
353  DF  .~.~> With beam deflector or focussing means

DEFINITION

Classification: 250/338.1

Infrared responsive:

(under subclass 336.1) Subject matter wherein the signalling means is responsive to electromagnetic radiation having a wave-length in the range of 750 nanometers to 1 millimeter, i.e., infrared.

(1) Note. The subject matter of this subclass and the subclasses indented hereunder does not include heat or temperature responsive means, per se. But these subclasses do include means to convert infrared radiation to heat combined with heat or temperature responsive electric signalling means responsive to such converted radiations.

SEE OR SEARCH CLASS

136, Batteries: Thermoelectric and Photoelectric,

224+, for thermocouples, per se.

340, Communications: Electrical,

600, for radiant energy conditions indicators.

374, Thermal Measuring and Testing, 100+, for temperature Measurement.