US PATENT SUBCLASS 324 / 689
.~.~.~.~ 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}
658  DF  .~.~ Using capacitive type measurement {10}
686  DF  .~.~.~ With a capacitive sensing means {4}
689.~.~.~.~ To determine water content

DEFINITION

Classification: 324/689

To determine water content:

(under subclass 686) Subject matter including measurement of the water content of a material of object.

SEE OR SEARCH THIS CLASS, SUBCLASS:

640, 634 and 643, for determination of water content by using microwaves transmitted through a substance under test.

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

694+, for determination of moisture content of a substance using a resistive or conductive type measurement device or apparatus.

SEE OR SEARCH CLASS

73, Measuring and Testing, 73+, for moisture control or absorption characteristics of material; and subclasses 29.02+ 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.