US PATENT SUBCLASS 374 / 163
.~ By electrical or magnetic heat sensor

Current as of: June, 1999
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374 /   HD   THERMAL MEASURING AND TESTING

100  DF  TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13}
163.~ By electrical or magnetic heat sensor {13}
164  DF  .~.~> With preheated sensing probe
165  DF  .~.~> With heat exchanger or conductor
166  DF  .~.~> At plural zones {1}
168  DF  .~.~> With self-rebalancing arrangement (e.g., servo-potentiometer, thermal link)
169  DF  .~.~> With thermal lag compensation
170  DF  .~.~> Digital output {1}
172  DF  .~.~> With compensation for sensor nonlinearity or lead impedance {1}
174  DF  .~.~> By conductive fluid or work function within sensor (e.g., ionization)
175  DF  .~.~> Thermal noise generated in conductor
176  DF  .~.~> Including sensor having hysteresis or cryogenic property (e.g., ferromagnetism, superconductivity) {1}
178  DF  .~.~> By barrier layer sensing element (e.g., semiconductor junction)
179  DF  .~.~> By thermoelectric potential generator (e.g., thermocouple) {3}
183  DF  .~.~> By current modifying sensor {2}

DEFINITION

Classification: 374/163

By electrical or magnetic heat sensor:

(under subclass 100) Subject matter including an element having a temperature responsive variation in an electrical or magnetic property thereof and an arrangement providing a quantitative indication from the variation.

(1) Note. Included in this and its indented subclasses is circuitry peculiar to temperature measurement and not provided for elsewhere.

(2) Note. Sensor structure, per se, is classified with the particular element structure (e.g. resistor, magnet, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

188, for a thermometer having a mechanical sensor and an electrical indicator.

SEE OR SEARCH CLASS

257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), 53, 56, 108, 414, and 467-470 for such devices used as temperature responsive devices, subclass 295 for insulated gate field effect devices with a ferroelectric layer, and subclasses 421-427 for magnetic field responsive devices.