Inventor · disambiguated record
Philip T. Krein
Also filed as: KREIN PHILIP · KREIN PHILIP T
41 granted patents·2,578 citations·filing 1986–2015
99Inventor score
Files withUNIV ILLINOIS13SOLARBRIDGE TECHNOLOGIES INC8CHAPMAN PATRICK L4KREIN PHILIP T4TEKTRONIX INC4
Top patents by PatentIndex Score
41 records- 0199US7945413B2Voltage-sensed system and method for anti-islanding protection of grid-connected invertersSOLARBRIDGE TECHNOLOGIES INC·Filed 2007·Granted May 17, 2011·201 cites·19 claims
- 0298US8284574B2Method and apparatus for controlling an inverter using pulse mode controlCHAPMAN PATRICK·Filed 2011·Granted Oct 9, 2012·116 cites·20 claims
- 0398US8279642B2Apparatus for converting direct current to alternating current using an active filter to reduce double-frequency ripple power of bus waveformCHAPMAN PATRICK L·Filed 2009·Granted Oct 2, 2012·60 cites·41 claims
- 0498US5801519ASelf-excited power minimizer/maximizer for switching power converters and switching motor drive applicationsUNIV ILLINOIS·Filed 1996·Granted Sep 1, 1998·444 cites·24 claims
- 0598US5668464AFeedforward active filter for output ripple cancellation in switching power convertersUNIV ILLINOIS·Filed 1996·Granted Sep 16, 1997·131 cites·10 claims
- 0697US9093919B2Apparatus for converting direct current to alternating current using a frequency converterCHAPMAN PATRICK L·Filed 2012·Granted Jul 28, 2015·28 cites·20 claims
- 0796US9806628B2Apparatus and method for controlling DC-AC power conversionSUNPOWER CORP·Filed 2015·Granted Oct 31, 2017·10 cites·20 claims
- 0896US9225256B2Apparatus and method for controlling DC-AC power conversionSUNPOWER CORP·Filed 2013·Granted Dec 29, 2015·19 cites·20 claims
- 0996US9143053B1Microinverters for employment in connection with photovoltaic modulesSANDIA CORP·Filed 2013·Granted Sep 22, 2015·73 cites·20 claims
- 1096US8482947B2Apparatus and method for controlling DC-AC power conversionCHAPMAN PATRICK L·Filed 2009·Granted Jul 9, 2013·29 cites·51 claims
- 1196US8423312B2Voltage-sensed system and method for anti-islanding protection of grid-connected invertersKREIN PHILIP T·Filed 2011·Granted Apr 16, 2013·21 cites·20 claims
- 1295US8350411B2Modular system for unattended energy generation and storageSOLARBRIDGE TECHNOLOGIES INC·Filed 2011·Granted Jan 8, 2013·37 cites·20 claims
- 1394US8737100B2Method and apparatus for controlling an inverter using pulse mode controlCHAPMAN PATRICK L·Filed 2012·Granted May 27, 2014·27 cites·20 claims
- 1494US8325499B2Methods for minimizing double-frequency ripple power in single-phase power conditionersKREIN PHILIP T·Filed 2011·Granted Dec 4, 2012·27 cites·24 claims
- 1594US7663342B2Apparatus, system, and method for controlling multiple power suppliesSOLARBRIDGE TECHNOLOGIES INC·Filed 2007·Granted Feb 16, 2010·68 cites·22 claims
- 1694US5710504ASwitched capacitor system for automatic battery equalizationUNIV ILLINOIS·Filed 1996·Granted Jan 20, 1998·288 cites·38 claims
- 1794US4707845ATouch panel with automatic nullingTEKTRONIX INC·Filed 1986·Granted Nov 17, 1987·186 cites·20 claims
- 1893US8004865B2Methods for minimizing double-frequency ripple power in single-phase power conditionersSOLARBRIDGE TECHNOLOGIES INC·Filed 2010·Granted Aug 23, 2011·21 cites·20 claims
- 1993US7982434B2Apparatus and method for controlling a power supplySOLARBRIDGE TECHNOLOGIES INC·Filed 2010·Granted Jul 19, 2011·24 cites·20 claims
- 2093US7078883B2Method and apparatus for starting power convertersUNIV ILLINOIS·Filed 2004·Granted Jul 18, 2006·173 cites·31 claims
- 2192US4698460ATouch panel systemTEKTRONIX INC·Filed 1986·Granted Oct 6, 1987·158 cites·15 claims
- 2291US8842454B2Inverter array with localized inverter controlJOHNSON BRIAN·Filed 2011·Granted Sep 23, 2014·25 cites·20 claims
- 2391US6700803B2Systems and methods for pulse width modulationUNIV ILLINOIS·Filed 2002·Granted Mar 2, 2004·51 cites·28 claims
- 2490US9116692B1System and method for improving power conversion for advanced electronic circuitsKREIN PHILIP T·Filed 2011·Granted Aug 25, 2015·19 cites·20 claims
- 2590US7994657B2Modular system for unattended energy generation and storageSOLARBRIDGE TECHNOLOGIES INC·Filed 2006·Granted Aug 9, 2011·37 cites·41 claims
- 2690US4698461ATouch panel with automatic frequency controlTEKTRONIX INC·Filed 1986·Granted Oct 6, 1987·126 cites·17 claims
- 2789US7755916B2Methods for minimizing double-frequency ripple power in single-phase power conditionersSOLARBRIDGE TECHNOLOGIES INC·Filed 2007·Granted Jul 13, 2010·28 cites·21 claims
- 2889US7681090B2Ripple correlation control based on limited samplingSOLARBRIDGE TECHNOLOGIES INC·Filed 2007·Granted Mar 16, 2010·28 cites·25 claims
- 2985US9722504B2Apparatus for converting direct current to alternating current using multiple convertersSUNPOWER CORP·Filed 2015·Granted Aug 1, 2017·2 cites·20 claims
- 3085US8508074B2System and method for optimizing solar power conversionSHENOY PRADEEP S·Filed 2011·Granted Aug 13, 2013·8 cites·20 claims
- 3185US7382112B2Methods and devices for input waveform control in switching power suppliesUNIV ILLINOIS·Filed 2005·Granted Jun 3, 2008·20 cites·13 claims
- 3283US7187149B1Commutation technique for an AC-to-AC converter based on state machine controlUNIV ILLINOIS·Filed 2005·Granted Mar 6, 2007·14 cites·18 claims
- 3380US9799779B2Systems and methods for photovoltaic string protectionUNIV ILLINOIS·Filed 2014·Granted Oct 24, 2017·8 cites·19 claims
- 3479US7030512B2Dynamic current sharing dc-dc switching power supplyUNIV ILLINOIS·Filed 2004·Granted Apr 18, 2006·39 cites·27 claims
- 3572US9484745B2Virtual oscillator control of power electronics invertersUNIV ILLINOIS·Filed 2014·Granted Nov 1, 2016·6 cites·20 claims
- 3668US9467063B2Technologies for interleaved control of an inverter arrayKREIN PHILIP·Filed 2010·Granted Oct 11, 2016·4 cites·26 claims
- 3761US9007014B2System and method for compensating for high frequency application of ripple correlation to minimize power losses in induction machinesUNIV ILLINOIS·Filed 2013·Granted Apr 14, 2015·1 cites·21 claims
- 3859US8155898B2Methods and apparatus for providing an extremely fast response in switching power convertersKREIN PHILIP T·Filed 2007·Granted Apr 10, 2012·6 cites·16 claims
- 3950US9954624B2Angle-based speed estimation of alternating current machines utilizing a median filterUNIV ILLINOIS·Filed 2013·Granted Apr 24, 2018·0 cites·22 claims
- 4043US4725695ATouch panel with discontinuities in touch sensitive surfaceTEKTRONIX INC·Filed 1986·Granted Feb 16, 1988·13 cites·19 claims
- 4132USD760666SElectrical outlet boxUNIV ILLINOIS·Filed 2013·Granted Jul 5, 2016·2 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →