Krein; Philip T.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Krein; Philip T..The latest application filed is for "apparatus and method for controlling dc-ac power conversion".

Company Profile

0.42.30

Krein; Philip T. - Champaign IL
Krein; Philip T. - Portland OR

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Angle-based speed estimation of alternating current machines utilizing a median filter Grant 9,954,624 - Bazzi , et al. April 24, 2	2018-04-24
Apparatus and method for controlling DC-AC power conversion Grant 9,806,628 - Chapman , et al. October 31, 2	2017-10-31
Systems and methods for photovoltaic string protection Grant 9,799,779 - Krein , et al. October 24, 2	2017-10-24
Apparatus for converting direct current to alternating current using multiple converters Grant 9,722,504 - Chapman , et al. August 1, 2	2017-08-01
Apparatus and Method for Controlling DC-AC Power Conversion App 20160164427 - Chapman; Patrick L. ; et al.	2016-06-09
Apparatus and method for controlling DC-AC power conversion Grant 9,225,256 - Chapman , et al. December 29, 2	2015-12-29
Apparatus For Converting Direct Current To Alternating Current App 20150333617 - Chapman; Patrick L. ; et al.	2015-11-19
Microinverters for employment in connection with photovoltaic modules Grant 9,143,053 - Lentine , et al. September 22, 2	2015-09-22
System and method for improving power conversion for advanced electronic circuits Grant 9,116,692 - Krein , et al. August 25, 2	2015-08-25
Apparatus for converting direct current to alternating current using a frequency converter Grant 9,093,919 - Chapman , et al. July 28, 2	2015-07-28
Systems and Methods for Photovoltaic String Protection App 20150131187 - Krein; Philip T. ; et al.	2015-05-14
System and method for compensating for high frequency application of ripple correlation to minimize power losses in induction machines Grant 9,007,014 - Bazzi , et al. April 14, 2	2015-04-14
System And Method For Compensating For High Frequency Application Of Ripple Correlation To Minimize Power Losses In Induction Machines App 20140184135 - Bazzi; Ali M. ; et al.	2014-07-03
Method and apparatus for controlling an inverter using pulse mode control Grant 8,737,100 - Chapman , et al. May 27, 2	2014-05-27
Apparatus And Method For Controlling Dc-ac Power Conversion App 20140003100 - Chapman; Patrick L. ; et al.	2014-01-02
Angle-based Speed Estimation Of Alternating Current Machines Utilizing A Median Filter App 20130289934 - Bazzi; Ali M. ; et al.	2013-10-31
System and method for optimizing solar power conversion Grant 8,508,074 - Shenoy , et al. August 13, 2	2013-08-13
Apparatus and method for controlling DC-AC power conversion Grant 8,482,947 - Chapman , et al. July 9, 2	2013-07-09
Method and Apparatus for Controlling an Inverter Using Pulse Mode Control App 20130094268 - Chapman; Patrick L. ; et al.	2013-04-18
Voltage-sensed system and method for anti-islanding protection of grid-connected inverters Grant 8,423,312 - Krein April 16, 2	2013-04-16
Apparatus For Converting Direct Current To Alternating Current App 20130027982 - Chapman; Patrick L. ; et al.	2013-01-31
Modular system for unattended energy generation and storage Grant 8,350,411 - Kimball , et al. January 8, 2	2013-01-08
Methods for minimizing double-frequency ripple power in single-phase power conditioners Grant 8,325,499 - Krein , et al. December 4, 2	2012-12-04
Apparatus for converting direct current to alternating current using an active filter to reduce double-frequency ripple power of bus waveform Grant 8,279,642 - Chapman , et al. October 2, 2	2012-10-02
System and Method for Optimizing Solar Power Conversion App 20120091800 - SHENOY; PRADEEP ; et al.	2012-04-19
Methods and apparatus for providing an extremely fast response in switching power converters Grant 8,155,898 - Krein , et al. April 10, 2	2012-04-10
Methods For Minimizing Double-frequency Ripple Power In Single-phase Power Conditioners App 20110305050 - Krein; Philip T. ; et al.	2011-12-15
Methods for minimizing double-frequency ripple power in single-phase power conditioners Grant 8,004,865 - Krein , et al. August 23, 2	2011-08-23
Modular System For Unattended Energy Generation And Storage App 20110199044 - Kimball; Jonathan W. ; et al.	2011-08-18
Modular system for unattended energy generation and storage Grant 7,994,657 - Kimball , et al. August 9, 2	2011-08-09
Apparatus and method for controlling a power supply Grant 7,982,434 - Kimball , et al. July 19, 2	2011-07-19
Voltage-sensed System And Method For Anti-islanding Protection Of Grid-connected Inverters App 20110164440 - Krein; Philip T.	2011-07-07
Voltage-sensed system and method for anti-islanding protection of grid-connected inverters Grant 7,945,413 - Krein May 17, 2	2011-05-17
Apparatus And Method For Controlling Dc-ac Power Conversion App 20110026281 - Chapman; Patrick L. ; et al.	2011-02-03
Apparatus For Converting Direct Current To Alternating Current App 20110026282 - Chapman; Patrick L. ; et al.	2011-02-03
Apparatus And Method For Controlling A Power Supply App 20100283326 - Kimball; Jonathan W. ; et al.	2010-11-11
Methods For Minimizing Double-frquency Ripple Power In Single-phase Power Conditioners App 20100238690 - Krein; Philip T. ; et al.	2010-09-23
Methods for minimizing double-frequency ripple power in single-phase power conditioners Grant 7,755,916 - Krein , et al. July 13, 2	2010-07-13
Ripple correlation control based on limited sampling Grant 7,681,090 - Kimball , et al. March 16, 2	2010-03-16
Apparatus, system, and method for controlling multiple power supplies Grant 7,663,342 - Kimball , et al. February 16, 2	2010-02-16
Methods for Minimizing Double-Frequency Ripple Power in Single-Phase Power Conditioners App 20090097283 - Krein; Philip T. ; et al.	2009-04-16
Voltage-sensed System And Method For Anti-islanding Protection Of Grid-connected Inverters App 20090059631 - Krein; Philip T.	2009-03-05
Ripple Correlation Control Based On Limited Sampling App 20080183338 - Kimball; Jonathan W. ; et al.	2008-07-31
Apparatus And Method For Controlling A Power Supply App 20080179961 - Kimball; Jonathan W. ; et al.	2008-07-31
Modular System for Unattended Energy Generation and Storage App 20080150484 - Kimball; Jonathan W. ; et al.	2008-06-26
Methods and devices for input waveform control in switching power supplies Grant 7,382,112 - Krein June 3, 2	2008-06-03
Methods And Apparatus For Providing An Extremely Fast Response In Switching Power Converters App 20080012544 - Krein; Philip T. ; et al.	2008-01-17
Commutation technique for an AC-to-AC converter based on state machine control Grant 7,187,149 - Balog, Jr. , et al. March 6, 2	2007-03-06
Methods and devices for input waveform control in switching power supplies App 20070040533 - Krein; Philip T.	2007-02-22
Commutation Technique For An Ac-to-ac Converter Based On State Machine Control App 20070035265 - Balog; Robert S. JR. ; et al.	2007-02-15
Method and apparatus for starting power converters Grant 7,078,883 - Chapman , et al. July 18, 2	2006-07-18
Dynamic current sharing dc-dc switching power supply Grant 7,030,512 - Krein April 18, 2	2006-04-18
Dynamic current sharing dc-dc switching power supply App 20050286277 - Krein, Philip T.	2005-12-29
Method and apparatus for starting power converters App 20050226011 - Chapman, Patrick ; et al.	2005-10-13
Systems and methods for pulse width modulation Grant 6,700,803 - Krein March 2, 2	2004-03-02
Systems and methods for pulse width modulation App 20030103361 - Krein, Philip T.	2003-06-05
Self-excited power minimizer/maximizer for switching power converters and switching motor drive applications Grant 5,801,519 - Midya , et al. September 1, 1	1998-09-01
Switched capacitor system for automatic battery equalization Grant 5,710,504 - Pascual , et al. January 20, 1	1998-01-20
Feedforward active filter for output ripple cancellation in switching power converters Grant 5,668,464 - Krein , et al. September 16, 1	1997-09-16
Touch panel with discontinuities in touch sensitive surface Grant 4,725,695 - Murdock , et al. February 16, 1	1988-02-16
Touch panel with automatic nulling Grant 4,707,845 - Krein , et al. November 17, 1	1987-11-17
Touch panel system Grant 4,698,460 - Krein , et al. October 6, 1	1987-10-06
Touch panel with automatic frequency control Grant 4,698,461 - Meadows , et al. October 6, 1	1987-10-06

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