PK

Philip T. Krein

UI University Of Illinois: 17 patents #29 of 3,009Top 1%
ST Solarbridge Technologies: 15 patents #2 of 28Top 8%
SU Sunpower: 5 patents #129 of 453Top 30%
Tektronix: 4 patents #288 of 1,698Top 20%
RJ Rutgers, The State University Of New Jersey: 1 patents #651 of 1,498Top 45%
SA Sandia: 1 patents #980 of 2,107Top 50%
📍 Champaign, IL: #24 of 1,105 inventorsTop 3%
🗺 Illinois: #1,189 of 84,256 inventorsTop 2%
Overall (All Time): #76,631 of 4,157,543Top 2%
41
Patents All Time

Issued Patents All Time

Showing 1–25 of 41 patents

Patent #TitleCo-InventorsDate
9954624 Angle-based speed estimation of alternating current machines utilizing a median filter Ali M. Bazzi 2018-04-24
9806628 Apparatus and method for controlling DC-AC power conversion Patrick L. Chapman, Brian Kuhn, Robert S. Balog, Jonathan W. Kimball, Alexander Gray +1 more 2017-10-31
9799779 Systems and methods for photovoltaic string protection Katherine A. Kim, Robert Pilawa-Podgurski 2017-10-24
9722504 Apparatus for converting direct current to alternating current using multiple converters Patrick L. Chapman, Brian Kuhn, Robert S. Balog, Jonathan W. Kimball, Alexander Gray 2017-08-01
9484745 Virtual oscillator control of power electronics inverters Brian P. Johnson, Sairaj Dholpe, Abdullah Hamadeh 2016-11-01
9467063 Technologies for interleaved control of an inverter array 2016-10-11
D760666 Electrical outlet box Timothy L. Newman 2016-07-05
9225256 Apparatus and method for controlling DC-AC power conversion Patrick L. Chapman, Brian Kuhn, Robert S. Balog, Jonathan W. Kimball, Alexander Gray +1 more 2015-12-29
9143053 Microinverters for employment in connection with photovoltaic modules Anthony L. Lentine, Gregory N. Nielson, Murat Okandan, Brian B. Johnson 2015-09-22
9116692 System and method for improving power conversion for advanced electronic circuits Roy H. Campbell, Naresh Ramnath Shanbhag 2015-08-25
9093919 Apparatus for converting direct current to alternating current using a frequency converter Patrick L. Chapman, Brian Kuhn, Robert S. Balog, Jonathan W. Kimball, Alexander Gray 2015-07-28
9007014 System and method for compensating for high frequency application of ripple correlation to minimize power losses in induction machines Ali M. Bazzi 2015-04-14
8842454 Inverter array with localized inverter control Brian P. Johnson, Alexander Gray, Patrick L. Chapman 2014-09-23
8737100 Method and apparatus for controlling an inverter using pulse mode control Patrick L. Chapman 2014-05-27
8508074 System and method for optimizing solar power conversion Pradeep S. Shenoy 2013-08-13
8482947 Apparatus and method for controlling DC-AC power conversion Patrick L. Chapman, Brian Kuhn, Robert S. Balog, Jonathan W. Kimball, Alexander Gray +1 more 2013-07-09
8423312 Voltage-sensed system and method for anti-islanding protection of grid-connected inverters 2013-04-16
8350411 Modular system for unattended energy generation and storage Jonathan W. Kimball, Nicholas Benavides 2013-01-08
8325499 Methods for minimizing double-frequency ripple power in single-phase power conditioners Robert S. Balog 2012-12-04
8284574 Method and apparatus for controlling an inverter using pulse mode control Patrick L. Chapman 2012-10-09
8279642 Apparatus for converting direct current to alternating current using an active filter to reduce double-frequency ripple power of bus waveform Patrick L. Chapman, Brian Kuhn, Robert S. Balog, Jonathan W. Kimball, Alexander Gray 2012-10-02
8155898 Methods and apparatus for providing an extremely fast response in switching power converters Grant E. Pitel 2012-04-10
8004865 Methods for minimizing double-frequency ripple power in single-phase power conditioners Robert S. Balog 2011-08-23
7994657 Modular system for unattended energy generation and storage Jonathan W. Kimball, Nicholas Benavides 2011-08-09
7982434 Apparatus and method for controlling a power supply Jonathan W. Kimball, Nicholas Benavides 2011-07-19