Inventor · disambiguated record
Loren H. Walker
Also filed as: WALKER LOREN H
57 granted patents·1,443 citations·filing 1974–1994
99Inventor score
Top patents by PatentIndex Score
57 records- 0197US4060752ADischarge lamp auxiliary circuit with dI/dt switching controlGEN ELECTRIC·Filed 1976·Granted Nov 29, 1977·80 cites·14 claims
- 0296US4475150ACoordinated load commutated inverter protection systemGEN ELECTRIC·Filed 1982·Granted Oct 2, 1984·98 cites·38 claims
- 0395US4281276ADual mode AC motor drive systemGEN ELECTRIC·Filed 1979·Granted Jul 28, 1981·56 cites·18 claims
- 0495US4230979AControlled current inverter and motor control systemGEN ELECTRIC·Filed 1978·Granted Oct 28, 1980·60 cites·25 claims
- 0593US4276510AApparatus for sensing current transformer primary current as a function of differential core inductanceGEN ELECTRIC·Filed 1979·Granted Jun 30, 1981·63 cites·13 claims
- 0692US4253047AStarting electrodes for solenoidal electric field discharge lampsGEN ELECTRIC·Filed 1977·Granted Feb 24, 1981·32 cites·21 claims
- 0792US4227138AReversible variable frequency oscillator for smooth reversing of AC motor drivesGEN ELECTRIC·Filed 1978·Granted Oct 7, 1980·42 cites·11 claims
- 0889US4449087AFlux feedback firing control for a load commutated inverterGEN ELECTRIC·Filed 1981·Granted May 15, 1984·48 cites·30 claims
- 0988US4609990AFrequency measurement systemGEN ELECTRIC·Filed 1984·Granted Sep 2, 1986·37 cites·15 claims
- 1088US4071812AAC Inverter with constant power outputGEN ELECTRIC·Filed 1976·Granted Jan 31, 1978·33 cites·29 claims
- 1187US3940682ARectifier circuits using transistors as rectifying elementsGEN ELECTRIC·Filed 1974·Granted Feb 24, 1976·34 cites·2 claims
- 1286US4237531AControlled current inverter system having semiconductor overvoltage protectionGEN ELECTRIC·Filed 1979·Granted Dec 2, 1980·34 cites·11 claims
- 1384US5041959AControl system for a current source converter supplying an AC busGEN ELECTRIC·Filed 1990·Granted Aug 20, 1991·103 cites·20 claims
- 1484US4545002AThyristor voltage limiter for current source inverterGEN ELECTRIC·Filed 1983·Granted Oct 1, 1985·33 cites·35 claims
- 1580US4280085AApparatus and method for providing a signal proportional to flux in an AC motor for control of motor drive currentGEN ELECTRIC·Filed 1979·Granted Jul 21, 1981·22 cites·27 claims
- 1677US4238821AMethod and apparatus for a variable frequency inverter system having commutation fault detection and correction capabilitiesGEN ELECTRIC·Filed 1979·Granted Dec 9, 1980·20 cites·23 claims
- 1777US4183081AInverter system including commutation failure prevention schemeGEN ELECTRIC·Filed 1978·Granted Jan 8, 1980·20 cites·16 claims
- 1876US5621599ASwitched MOV deviceGEN ELECTRIC·Filed 1994·Granted Apr 15, 1997·36 cites·2 claims
- 1976US4311951AApparatus and method for high slip operation of an AC electric motor at substantially zero rotation and substantially zero torqueGEN ELECTRIC·Filed 1979·Granted Jan 19, 1982·20 cites·29 claims
- 2074US4314190AControlled current inverter with angle command limitGEN ELECTRIC·Filed 1980·Granted Feb 2, 1982·24 cites·24 claims
- 2174US4070701AInverter power supplyGEN ELECTRIC·Filed 1976·Granted Jan 24, 1978·19 cites·32 claims
- 2272US5338994AMethod and apparatus for achieving current balance in parallel connected switching devicesGEN ELECTRIC·Filed 1993·Granted Aug 16, 1994·42 cites·33 claims
- 2372US5051603AMethod and apparatus for matching turn-off times of parallel connected semiconductor switching devicesGEN ELECTRIC·Filed 1990·Granted Sep 24, 1991·25 cites·26 claims
- 2471US5070440APower conversion scheme employing paralleled unitsGEN ELECTRIC·Filed 1990·Granted Dec 3, 1991·38 cites·32 claims
- 2571US4441064ATwelve-pulse operation of a controlled current inverter motor driveGEN ELECTRIC·Filed 1981·Granted Apr 3, 1984·21 cites·11 claims
- 2670US4496899AControl for a force commutated current source var generatorGEN ELECTRIC·Filed 1983·Granted Jan 29, 1985·32 cites·34 claims
- 2769US4641231AApparatus and method for failure testing of a control turn-off semiconductorGEN ELECTRIC·Filed 1985·Granted Feb 3, 1987·27 cites·24 claims
- 2868US4004187APush-pull inverter ballast for arc discharge lampsGEN ELECTRIC·Filed 1976·Granted Jan 18, 1977·21 cites·16 claims
- 2964US4366427AProtective method and apparatus for a controlled current inverter and motor control systemGEN ELECTRIC·Filed 1980·Granted Dec 28, 1982·16 cites·18 claims
- 3063US4420719ACross-tied current regulator for load commutated inverter drivesGEN ELECTRIC·Filed 1981·Granted Dec 13, 1983·15 cites·26 claims
- 3162US4107771ACircuit for shutting down an inverterGEN ELECTRIC·Filed 1977·Granted Aug 15, 1978·13 cites·6 claims
- 3261US4600874AExcitation current control for induction motor drive using load commutated inverter circuitGEN ELECTRIC·Filed 1985·Granted Jul 15, 1986·24 cites·27 claims
- 3361US4451770AMethod and apparatus for determining the resistance of an AC motor statorGEN ELECTRIC·Filed 1983·Granted May 29, 1984·16 cites·24 claims
- 3461US4048539AApparatus for starting high pressure gaseous discharge lampsGEN ELECTRIC·Filed 1975·Granted Sep 13, 1977·16 cites·1 claims
- 3560US4270078AMethod and apparatus for a variable frequency inverter system having commutation fault detection and correction capabilitiesGEN ELECTRIC·Filed 1979·Granted May 26, 1981·11 cites·14 claims
- 3658US4454470AMethod and apparatus for frequency measurement of an alternating current signalGEN ELECTRIC·Filed 1981·Granted Jun 12, 1984·14 cites·12 claims
- 3756US4258416AInverter power conversion system having improved control schemeGEN ELECTRIC·Filed 1979·Granted Mar 24, 1981·9 cites·15 claims
- 3855US4287463AZero rotation and zero torque detector and method for an AC electric motor driveGEN ELECTRIC·Filed 1979·Granted Sep 1, 1981·10 cites·21 claims
- 3954US4602206ACapacitance control for a static var generatorGEN ELECTRIC·Filed 1983·Granted Jul 22, 1986·12 cites·47 claims
- 4054US4274042AAC Motor drive system having clamped command error signalGEN ELECTRIC·Filed 1979·Granted Jun 16, 1981·9 cites·14 claims
- 4153US4607206AFlux control for induction motor drive using load commutated inverter circuitGEN ELECTRIC·Filed 1985·Granted Aug 19, 1986·17 cites·87 claims
- 4252US4994981AMethod and apparatus for controlling a power converterELECTRIC POWER RES INST·Filed 1988·Granted Feb 19, 1991·25 cites·12 claims
- 4352US4602200AAlternating current motor drive having current filterGEN ELECTRIC·Filed 1985·Granted Jul 22, 1986·14 cites·14 claims
- 4452US4247890AReversible inverter system having improved control schemeGEN ELECTRIC·Filed 1979·Granted Jan 27, 1981·8 cites·12 claims
- 4551US4128785ACore configuration for induction ionized lampsGEN ELECTRIC·Filed 1978·Granted Dec 5, 1978·5 cites·12 claims
- 4649US4602199AControl for induction motor drive using load commutated inverter circuitGEN ELECTRIC·Filed 1985·Granted Jul 22, 1986·14 cites·18 claims
- 4749US4364007AUnintentional impedance detection systemGEN ELECTRIC·Filed 1980·Granted Dec 14, 1982·11 cites·20 claims
- 4845US4602198AInduction motor drive using load commutated inverter circuitGEN ELECTRIC·Filed 1985·Granted Jul 22, 1986·12 cites·16 claims
- 4945US4302713AFixed gating sequence apparatus and method for an inverterGEN ELECTRIC·Filed 1979·Granted Nov 24, 1981·6 cites·15 claims
- 5045US4164015AControl circuit for power converterGEN ELECTRIC·Filed 1978·Granted Aug 7, 1979·6 cites·25 claims
Showing the top 50 of 57 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →