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Class Information
Number: 324/535
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > For fault location > By time measuring
Description: Subject matter where a defect produces a fault signal which is evaluated as to time to indicate the location of the fault.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8710987 Secure data entry device Apr. 29, 2014
8664950 Method for measuring longitudinal bias magnetic field in a tunnel magnetoresistive sensor Mar. 4, 2014
8648607 Monitoring power usage Feb. 11, 2014
8598887 Fault wave arrival determination Dec. 3, 2013
8461850 Time-domain measurements in a test and measurement instrument Jun. 11, 2013
8405506 Secure data entry device Mar. 26, 2013
8289028 Wireless communication device Oct. 16, 2012
8269505 Locating short circuits in printed circuit boards Sep. 18, 2012
8242784 Qualifying circuit board materials Aug. 14, 2012
8217664 Generating a time delayed event Jul. 10, 2012
8193818 Partial corona discharge detection Jun. 5, 2012
8154303 Method for locating cable impairments Apr. 10, 2012
8143899 Method and apparatus for detecting partial discharges in electrical systems Mar. 27, 2012
8028210 Semiconductor device Sep. 27, 2011
8013614 System and method for enhanced accuracy in cable diagnostics of cable length Sep. 6, 2011
8006156 Method of generating test condition for detecting delay faults in semiconductor integrated circuit and apparatus for generating the same Aug. 23, 2011
8000913 System and method for providing power distribution system information Aug. 16, 2011
7977951 Methods and apparatus for measuring a length of a cable Jul. 12, 2011
7940056 Time-domain reflectometry May. 10, 2011
7913139 Semiconductor device Mar. 22, 2011
7855561 Test circuit Dec. 21, 2010
7827454 Semiconductor device Nov. 2, 2010
7808226 Line tracing method and apparatus utilizing non-linear junction detecting locator probe Oct. 5, 2010
7808249 Methods and apparatus for measuring a length of a cable Oct. 5, 2010
7679371 Advanced time domain reflection cable testing Mar. 16, 2010
7630853 Non-linear junction based electronics detection Dec. 8, 2009
7622931 Non-contact reflectometry system and method Nov. 24, 2009
7554334 Matching network characterization using variable impedance analysis Jun. 30, 2009
7538560 System and method for component failure protection May. 26, 2009
7424417 System and method for clock domain grouping using data path relationships Sep. 9, 2008
7400150 Remote fault monitoring in power lines Jul. 15, 2008
7355412 Remote fault monitoring system Apr. 8, 2008
7292044 Integrating time measurement circuit for a channel of a test card Nov. 6, 2007
7212008 Surveillance device detection utilizing non linear junction detection and reflectometry May. 1, 2007
7157710 Corona discharge detection Jan. 2, 2007
7096443 Method for determining the critical path of an integrated circuit Aug. 22, 2006
7075309 System and method to locate an anomaly of a conductor Jul. 11, 2006
7043398 Method for operating a position measuring device May. 9, 2006
7005862 Method and apparatus for measuring electric characteristics of cable assembly, and computer product Feb. 28, 2006
6977507 Cable tester with indicator Dec. 20, 2005
6927579 Parallel arc fault diagnostic for aircraft wiring Aug. 9, 2005
6923065 Apparatus for testing aramid fiber elevator cables Aug. 2, 2005
6919727 Accurate time measurement system circuit and method Jul. 19, 2005
6882161 Method of measuring dielectric constant of PCB for RIMM Apr. 19, 2005
6853196 Method and apparatus for electrical cable testing by pulse-arrested spark discharge Feb. 8, 2005
6784819 Measuring skew between digitizer channels using fourier transform Aug. 31, 2004
6774639 Partial discharge monitoring system for transformers Aug. 10, 2004
6737877 Method and circuit for reading a potentiometer May. 18, 2004
6703840 Methods and apparatuses for automatic process control for biasing and testing heated electrode refrigerant sensors Mar. 9, 2004
6696974 Cable device for detecting and monitoring rock and soil displacement Feb. 24, 2004

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