US PATENT SUBCLASS 324 / 664
.~.~.~.~ To determine water content

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
663  DF  .~.~.~ Where a material or object forms part of the dielectric being measured {4}
664.~.~.~.~ To determine water content {3}
665  DF  .~.~.~.~.~> By comparison or difference circuit {1}
667  DF  .~.~.~.~.~> By frequency signal response, change or processing circuit {1}
669  DF  .~.~.~.~.~> With compensation means {1}

DEFINITION

Classification: 324/664

To determine water content:

(under subclass 663) Subject matter including measurement of the material or object water content.

SEE OR SEARCH THIS CLASS, SUBCLASS:

634, for determination of water content by measuring resonant response to a microwave excitation.

640, and 643, for determination of water content by using microwave energy propagated through a substance under test.

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

689, for determination of moisture content of a substance using a capacitive sensing device or apparatus.

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 286 for humidity responsive circuits and capacitors.