Assignee
SQUARE D CO
US·982 granted patents·17 pending applications·33,690 citations·filing 1974–2009
Top patents by PatentIndex Score
999 records- 0198US5440644AAudio distribution system having programmable zoning featuresSQUARE D CO·Filed 1993·Granted Aug 8, 1995·1.6k cites·5 claims
- 0298US4996646AMicroprocessor-controlled circuit breaker and systemSQUARE D CO·Filed 1988·Granted Feb 26, 1991·520 cites·17 claims
- 0397US7253637B2Arc fault circuit interrupter systemSQUARE D CO·Filed 2005·Granted Aug 7, 2007·49 cites·34 claims
- 0497US7183667B2Method and apparatus for power inverter synchronizationSQUARE D CO·Filed 2003·Granted Feb 27, 2007·199 cites·52 claims
- 0597US6141192AArcing fault protection system for a switchgear enclosureSQUARE D CO·Filed 1998·Granted Oct 31, 2000·166 cites·18 claims
- 0697US5748616AData link module for time division multiplexing control systemsSQUARE D CO·Filed 1995·Granted May 5, 1998·178 cites·13 claims
- 0797US5185705ACircuit breaker having serial data communicationsSQUARE D CO·Filed 1992·Granted Feb 9, 1993·218 cites·38 claims
- 0897US4964058APower management and automation systemSQUARE D CO·Filed 1988·Granted Oct 16, 1990·115 cites·21 claims
- 0997US4349220ARaintight wirewaySQUARE D CO·Filed 1980·Granted Sep 14, 1982·163 cites·19 claims
- 1096US7272518B2Automated hierarchy classification in utility monitoring systemsSQUARE D CO·Filed 2005·Granted Sep 18, 2007·62 cites·34 claims
- 1196US6625550B1Arc fault detection for aircraftSQUARE D CO·Filed 1999·Granted Sep 23, 2003·124 cites·21 claims
- 1296US5982645APower conversion and distribution systemSQUARE D CO·Filed 1993·Granted Nov 9, 1999·459 cites·29 claims
- 1396US5682101AArcing fault detection systemSQUARE D CO·Filed 1996·Granted Oct 28, 1997·156 cites·3 claims
- 1496US5611059APrelinked parameter configuration, automatic graphical linking, and distributed database configuration for devices within an automated monitoring/control systemSQUARE D CO·Filed 1994·Granted Mar 11, 1997·309 cites·7 claims
- 1596US4969063ACircuit breaker with status indicating lightsSQUARE D CO·Filed 1989·Granted Nov 6, 1990·118 cites·12 claims
- 1695US7397212B2DC motor phase estimation with phase-locked loopSQUARE D CO·Filed 2006·Granted Jul 8, 2008·36 cites·15 claims
- 1795US6813525B2Energy management systemSQUARE D CO·Filed 2001·Granted Nov 2, 2004·237 cites·96 claims
- 1895US6782329B2Detection of arcing faults using bifurcated wiring systemSQUARE D CO·Filed 2001·Granted Aug 24, 2004·80 cites·44 claims
- 1995US6532424B1Electrical fault detection circuit with dual-mode power supplySQUARE D CO·Filed 2000·Granted Mar 11, 2003·86 cites·20 claims
- 2095US6370957B1Vibration analysis for predictive maintenance of rotating machinesSQUARE D CO·Filed 1999·Granted Apr 16, 2002·110 cites·19 claims
- 2195US6259996B1Arc fault detection systemSQUARE D CO·Filed 1998·Granted Jul 10, 2001·125 cites·30 claims
- 2295US5986860AZone arc fault detectionSQUARE D CO·Filed 1998·Granted Nov 16, 1999·127 cites·59 claims
- 2395US5847913ATrip indicators for circuit protection devicesSQUARE D CO·Filed 1997·Granted Dec 8, 1998·219 cites·52 claims
- 2495US5465011AUninterruptible power supply with improved output regulationSQUARE D CO·Filed 1992·Granted Nov 7, 1995·241 cites·21 claims
- 2595USD348435SCompact remote controlSQUARE D CO·Filed 1992·Granted Jul 5, 1994·60 cites·1 claims
- 2695US5170310AFail-resistant solid state interruption systemSQUARE D CO·Filed 1990·Granted Dec 8, 1992·123 cites·36 claims
- 2795US5131092ACommunication system enabling programmable logic controllers access to host computer tasks and host computer access to programmable logic controllers without pollingSQUARE D CO·Filed 1989·Granted Jul 14, 1992·156 cites·9 claims
- 2895US4897777APeer-to-peer register exchange controller for PLCSSQUARE D CO·Filed 1988·Granted Jan 30, 1990·152 cites·13 claims
- 2995US4647825AUp-to-speed enable for jam under load and phase lossSQUARE D CO·Filed 1985·Granted Mar 3, 1987·110 cites·11 claims
- 3095US4578732AGround fault circuit interrupter including snap-acting contactsSQUARE D CO·Filed 1983·Granted Mar 25, 1986·97 cites·13 claims
- 3195US3949336ASequential resetting circuit interrupterSQUARE D CO·Filed 1975·Granted Apr 6, 1976·78 cites·11 claims
- 3294US5933308AArcing fault protection system for a switchgear enclosureSQUARE D CO·Filed 1997·Granted Aug 3, 1999·105 cites·3 claims
- 3394US5761026ASnap-on circuit breaker mounting systemSQUARE D CO·Filed 1996·Granted Jun 2, 1998·85 cites·18 claims
- 3494US5467286AMetering unit with downloadable firmwareSQUARE D CO·Filed 1993·Granted Nov 14, 1995·119 cites·15 claims
- 3594US5233538AWaveform capturing arrangement in a distributed power networkSQUARE D CO·Filed 1990·Granted Aug 3, 1993·127 cites·24 claims
- 3694US5166887AMicrocomputer-controlled circuit breaker systemSQUARE D CO·Filed 1991·Granted Nov 24, 1992·150 cites·2 claims
- 3794US5151978ALan interface which permits a host computer to obtain data without interrupting a ladder program executing in the interfaceSQUARE D CO·Filed 1990·Granted Sep 29, 1992·273 cites·10 claims
- 3894US5136458AMicrocomputer based electronic trip system for circuit breakersSQUARE D CO·Filed 1989·Granted Aug 4, 1992·108 cites·2 claims
- 3994US5023396APop-up service fittingSQUARE D CO·Filed 1989·Granted Jun 11, 1991·149 cites·16 claims
- 4094US4992926APeer-to-peer register exchange controller for industrial programmable controllersSQUARE D CO·Filed 1988·Granted Feb 12, 1991·140 cites·8 claims
- 4194US4864287AApparatus and method for calibrating a motor monitor by reading and storing a desired value of the power factorSQUARE D CO·Filed 1986·Granted Sep 5, 1989·118 cites·10 claims
- 4294US4796142AOverload protection apparatus for emulating the response of a thermal overloadSQUARE D CO·Filed 1986·Granted Jan 3, 1989·97 cites·5 claims
- 4394US4574260ASnap acting solenoid operated reset latch mechanismSQUARE D CO·Filed 1983·Granted Mar 4, 1986·75 cites·18 claims
- 4493US7469190B2Automated system approach to analyzing harmonic distortion in an electric power systemSQUARE D CO·Filed 2007·Granted Dec 23, 2008·67 cites·18 claims
- 4593US6591482B1Assembly methods for miniature circuit breakers with electronicsSQUARE D CO·Filed 2000·Granted Jul 15, 2003·52 cites·2 claims
- 4693US5839092AArcing fault detection system using fluctuations in current peaks and waveformsSQUARE D CO·Filed 1997·Granted Nov 17, 1998·136 cites·32 claims
- 4793US5450306AClosed loop pulse width modulator inverter with volt-seconds feedback controlSQUARE D CO·Filed 1992·Granted Sep 12, 1995·125 cites·21 claims
- 4893US5323307APower management and automation systemSQUARE D CO·Filed 1990·Granted Jun 21, 1994·140 cites·16 claims
- 4993USD340718SSpeaker frame assemblySQUARE D CO·Filed 1991·Granted Oct 26, 1993·74 cites·1 claims
- 5093US5245704ASystem for sharing data between microprocessor based devicesSQUARE D CO·Filed 1990·Granted Sep 14, 1993·170 cites·9 claims
Showing the top 50 of 999 patent records by PatentIndex Score.
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