SCHWELTZER, JEAN E.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 6153
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 292
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6429661 Fault indicator for three-phase sheathed cableDec 09, 99Aug 06, 02[G01R]
6014301 Fault indicator providing contact closure on fault detectionApr 30, 98Jan 11, 00[H02H]
5889399 Test-point mounted fault indicator having immunity to fault currents in adjacent conductorsFeb 06, 97Mar 30, 99[G01R]
5729125 Bridged clamping mechanism for use with circuit condition monitoring devicesJul 08, 96Mar 17, 98[G01R]
5420502 Fault indicator with optically-isolated remote readout circuitDec 21, 92May 30, 95[G01R]
5406195 Phase-to-phase voltage monitor for three-phase power distribution systemDec 21, 92Apr 11, 95[G01R]
5363088 Voltage monitor for alternating current power systemDec 21, 92Nov 08, 94[G08B]
5220311 Direction indicating fault indicatorsFeb 19, 91Jun 15, 93[G08B]
5180972 Housing including biasing springs extending between clamp arms for cable mounted power line monitoring deviceJan 31, 92Jan 19, 93[G01R]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6211764 Waterproof current transformerExpiredFeb 20, 98Apr 03, 01[H01F]
5821869 Fault indicator for use with load-break connectorExpiredFeb 06, 97Oct 13, 98[G08B]
5677623 Fault powered fault indicator having timed resetExpiredApr 08, 96Oct 14, 97[G01R]
5677678 Fault indicator having auxiliary fault sensing windingExpiredApr 08, 96Oct 14, 97[G08B]
5274324 Hot line mountable hotline indicator having liquid crystal display with resettable memory functionExpiredJan 16, 91Dec 28, 93[G01R]
5153565 Fault indicator having electrostatically-actuated indicator flagExpiredAug 10, 88Oct 06, 92[G08B]
5095265 Circuit status indicator having liquid crystal displayExpiredAug 31, 90Mar 10, 92[G01R]
5077520 High impedance voltage indicator having capacitive voltage dividerExpiredAug 30, 90Dec 31, 91[G01R, G02F]
5070301 Fault indicator having liquid crystal status displayExpiredAug 31, 90Dec 03, 91[G08B, G01R]
5008651 Battery-powered fault indicatorExpiredJul 09, 90Apr 16, 91[G08B]
4873706 Electromechanical pulse counterExpiredMar 09, 88Oct 10, 89[G06M]
4795982 Fault indicator having delayed trip circuitExpiredApr 24, 87Jan 03, 89[G01R]
4794329 Cable mounted capacitively-coupled circuit condition indicating deviceExpiredMar 28, 86Dec 27, 88[G08B, G01R]
4794331 Circuit condition monitoring system having integral test pointExpiredOct 30, 87Dec 27, 88[G01R]
4794332 Fault indicator having improved trip inhibit circuitExpiredMar 28, 86Dec 27, 88[G01R]
4714916 Voltage loss detectorExpiredMar 28, 86Dec 22, 87[G08B]
4706016 Surge detector having distributed line inductance pickupExpiredMay 03, 85Nov 10, 87[G01R, H02H]
4686518 Fault indicator having trip inhibit circuitExpiredJul 29, 83Aug 11, 87[G08B]
4646006 Clamp mechanism for power line mounted monitoring deviceExpiredJun 28, 84Feb 24, 87[G01R, A47F, H01F]
4641220 Test point mounted voltage monitoring systemExpiredSep 21, 84Feb 03, 87[G01R]

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