US PATENT SUBCLASS 324 / 694
.~.~.~.~ To determine water content

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

600  DF  IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS {8}
649  DF  .~ Lumped type parameters {6}
691  DF  .~.~ Using resistance or conductance measurement {12}
693  DF  .~.~.~ With object or substance characteristic determination using conductivity effects {5}
694.~.~.~.~ To determine water content {2}
695  DF  .~.~.~.~.~> Where the object moves while under test
696  DF  .~.~.~.~.~> With a probe structure

DEFINITION

Classification: 324/694

To determine water content:

(under subclass 693) Subject matter including measurement of the water content of the object or substance being tested.

SEE OR SEARCH THIS CLASS, SUBCLASS:

634, for determination of water content by measuring distributive type parameters using resonant energy.

640, for determination of water content by using microwave energy transmitted through a substance under test.

643, for determination of water content by measuring distributive type parameters using reflected energy.

664+, for determination of water content by measuring lumped type parameters which includes dielectric characteristic measurement of a material or object.

689, for determination of water content of a substance using capacitive sensing means. SEE OR SEARCH CLASS

73, Measuring and Testing,

73+, for moisture control or absorption characteristics of material; and subclasses 335+ for hygrometers.

200, Electricity: Circuit Makers and Breakers,

61.04, for liquid responsive switches.

338, Electrical Resistors,

35, for moisture sensing resistors.

340, Communications: Electrical,

602+, for moisture condition responsive indicating systems.

361, Electricity: Electrical Systems and Devices,

178, and 206 for humidity responsive circuits and capacitors.