Patents
Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286)
10/2004
10/12/2004US6803772 Inductance measuring method
10/07/2004WO2004038429A3 Frequency domain reflectometry system for baselining and mapping of wires and cables
10/07/2004US20040199350 System and method for determining measurement errors of a testing device
10/07/2004US20040196121 Band switchable filter
10/07/2004DE202004012075U1 Test device for checking earth connections in aircraft power units uses a voltage drop measured by voltage test equipment via an earth connection through which a current flows
10/06/2004EP1465286A1 Method and apparatus for measuring complex dielectric constant of dielectric
10/06/2004EP1464967A2 Potential fixing device and potential fixing method
10/06/2004EP1464114A1 Method and apparatus for determining system response characteristics
10/06/2004CN1534303A Method and apparatus for measuring complex dielectric constant of dielectric
10/05/2004US6801044 Universal electromagnetic resonance system for detecting and measuring local non-uniformities in metal and non-metal objects
10/05/2004US6801043 Time domain reflectometry based transmitter equalization
09/2004
09/30/2004WO2004083875A1 Wave detection device, method, program, and recording medium
09/30/2004WO2004083874A1 Power detectors for measuring power coupling
09/30/2004WO2004083813A2 Method and apparatus for measuring concentration of a chemical component in a gas mixture
09/30/2004WO2004083812A2 Method and apparatus for detection of contaminants in a fluid
09/30/2004WO2004075247A3 Electronic components comprising adjustable-capacitance micro-electro-mechanical capacitors
09/30/2004WO2004059292A3 Probes for measurements of complex dielectric permittivity of porous and other materials and methods of use thereof
09/30/2004US20040193382 Method and apparatus for calibrating a multiport test system for measurement of a DUT
09/30/2004US20040189330 Circuit and method for detecting insulation faults
09/30/2004US20040189328 Hybrid gap measurement circuit
09/30/2004US20040189326 Vector-detecting apparatus and impedance measuring apparatus
09/30/2004US20040189323 Disconnection detecting circuit for sensor apparatus
09/30/2004DE19852775B4 Verfahren zur Sortierprüfung von Varistoren A method for screening inspection of varistors
09/29/2004EP1461625A2 Resistance circuit stabilization and pulse duration control systems for electroporation instruments
09/29/2004CN2645188Y High-current low-resistance box
09/29/2004CN1168998C Method and apparatus for determing the resistivity of a formation through which a cased well passes
09/29/2004CN1168994C Microwave automatic measuring device
09/29/2004CN1168989C Check terminal for testing electronic chip element, checking method and verifying attachment thereof
09/28/2004US6799133 Test mode control circuit for reconfiguring a device pin of an integrated circuit chip
09/28/2004US6798222 Migration measuring method and measuring apparatus
09/28/2004US6798221 Method, apparatus and article to test fuel cells
09/28/2004US6798218 Circuit for measuring absolute spread in capacitors implemented in planary technology
09/28/2004US6798215 System and method for measuring moisture content in a conductive environment
09/28/2004US6798194 Method for measuring a gap between a proximity probe and a conductive target material
09/28/2004CA2134165C Compact and portable device for measuring the reflection factor of a structure exposed to a microwave emission
09/23/2004WO2004081590A1 Micropower apparatus for low impedance measurements
09/23/2004US20040183560 Method and integrated circuit for capacitor measurement with digital readout
09/23/2004US20040183554 Reduction of positional errors in a four point probe resistance measurement
09/23/2004US20040183553 Three-dimensional characterization using a one-dimensional electrode array
09/23/2004US20040183550 System for manufacturing a modularly structured apparatus for determining a physical process quantity, and standardized components
09/23/2004US20040183542 Method for correcting measurement error and electronic component characteristic measurement apparatus
09/23/2004US20040183521 Power detectors for measuring power coupling
09/22/2004CN1167955C AC method for measuring insulation resistance
09/21/2004US6795783 Method of and apparatus for accurate resistance measurement with a programmable current source
09/21/2004US6794857 Apparatus and method for measuring a phase delay characteristic
09/16/2004US20040178810 Sensor apparatus
09/16/2004US20040178806 Micropower apparatus for low impedance measurements
09/16/2004US20040178804 Method and apparatus for detection of contaminants in a fluid
09/16/2004US20040178803 Method and apparatus for measuring concentration of a chemical component in a gas mixture
09/16/2004US20040178427 A-C:H ISFET device, manufacturing method, and testing methods and apparatus thereof
09/15/2004CN1529175A Method for measuring contact impedance between plane display and crystal sheet and its structure thereof
09/15/2004CN1528629A Track circuit primary parameter high-precision rapid ground measuring method and measuring apparatus thereof
09/14/2004US6792379 Data-based control of integrated circuits
09/14/2004US6791343 Modeling miller effect in static timing analysis
09/14/2004US6791340 Device for the comparison of two resistors, and integrated resistor compensation system incorporating this device
09/14/2004US6791338 Gated nanoscale switch having channel of molecular wires
09/14/2004US6791335 Sample assembly for thermoelectric analyzer
09/09/2004US20040176923 Testing of a frequency converter device
09/09/2004US20040176918 Method for digitally measuring electrical impedance
09/09/2004US20040174220 Tunable power amplifier matching circuit
09/09/2004US20040174172 Method of correcting measurement error and electronic component characteristic measurement apparatus
09/09/2004DE10307972A1 Earth connection method for recognizing and locating earth connections with low and high impedance measures frequencies different from a mains frequency
09/09/2004DE10303409A1 Verfahren und Schaltungsanordnung zur Bestimmung eines elektrischen Messwerts für ein Widerstandselement, vorzugsweise zur Bestimmung eines elektrischen Stroms durch das Widerstandselement Method and circuit arrangement for determining an electrical measurement value of a resistance element, preferably for the determination of an electric current through the resistive element
09/08/2004EP1455197A2 Calibration method and apparatus
09/08/2004EP1455181A1 Non-destructive testing of composite conductor rails
09/08/2004EP1131641B1 Charge transfer capacitance measurement circuit
09/08/2004CN2639897Y Digital D.C. bridge
09/08/2004CN1165773C Impedance detection apparatus and method
09/07/2004US6789236 Integrated circuit device characterization
09/07/2004US6788076 Apparatus for determining doping concentration of a semiconductor wafer
09/07/2004US6788044 Frequency change measuring device
09/02/2004WO2004075247A2 Electronic components comprising adjustable-capacitance micro-electro-mechanical capacitors
09/02/2004WO2004074781A2 Method and apparatus for measuring dry density and water content of soil
09/02/2004DE10225058B4 Verfahren zur selektiven Erfassung von Erdschlusswischern in Drehstromnetzen Process for the selective detection of Erdschlusswischern in three-phase systems
09/01/2004EP1452867A1 DNA specific capacity affinity sensor
09/01/2004EP1451596A1 Method for detecting the operability of a number of identical zener diodes that are connected in parallel to one another and to a solenoid
09/01/2004EP1451566A2 Particle impedance sensor
08/2004
08/31/2004US6785625 Characterizing multi-port cascaded networks
08/31/2004US6784854 Dielectric detection through conductive metal
08/31/2004US6784685 Testing vias and contacts in an integrated circuit
08/26/2004WO2004072665A1 Circuit check device, circuit check method, resistance measurement device, and resistance measurement method
08/26/2004WO2004072618A2 Improved microwave spectrometer
08/26/2004US20040167730 Method of calculating effective power relating to capacitor, method of measuring effective power consumed by capacitor, capacitor selection method, calculation apparatus for calculating effective power relating to capacitor, and recording medium storing the calculation program therefor
08/26/2004US20040164771 Differential capacitance sense amplifier
08/26/2004US20040164751 Digital potentiometer device
08/26/2004US20040164750 Digital time domain reflectometry moisture sensor
08/26/2004US20040164749 Systems and methods for classifying vehicles
08/26/2004US20040164748 Variable impedance test probe
08/26/2004CA2515810A1 Improved microwave spectrometer
08/25/2004CN1524276A Tunable ferro-electric filter
08/25/2004CN1523363A Method of testing transmission line characteristic impedance
08/25/2004CN1163758C Method for testing earthing resistance
08/24/2004US6781388 Liquid property sensor
08/24/2004US6781386 Method and device for measuring a line attenuation
08/19/2004WO2004070401A1 Method and circuit arrangement for determining an electric measurement value for a resistance element, preferably for determining an electric current that flows through said resistance element
08/19/2004WO2004070374A1 Apparatus and method for measuring an oxygen concentration of a gas
08/19/2004US20040162691 Digital group delay compensator
08/19/2004US20040162689 Multiport network analyzer calibration employing reciprocity of a device
08/19/2004US20040160231 Capacitance measurement system
08/19/2004US20040160230 Method, apparatus, and article of manufacture for characterizing a device and predicting electrical behavior of the device in a circuit