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USPTO Patent Rankings Data through Sept 30, 2025
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Balu Balakrishnan — 206 Patents

PIPower Integrations: 204 patents #1 of 206Top 1%
Saratoga, CA: #13 of 2,933 inventorsTop 1%
California: #519 of 386,348 inventorsTop 1%
Overall (All Time): #3,153 of 4,157,543Top 1%
206 Patents All Time

Issued Patents All Time

Showing 176–200 of 206 patents

Patent #TitleCo-InventorsDate
6462971 Method and apparatus providing a multi-function terminal for a power supply controller Alex B. Djenguerian, Leif Lund 2002-10-08
6456475 Off-line converter with digital control Alex B. Djenguerian, Leif Lund 2002-09-24
6438003 Output feedback and under-voltage detection system that senses an input current representing a voltage input Alex Dienguerian, Leif Lund 2002-08-20
6414471 Off-line converter with digital control Alex B. Djenguerian, Leif Lund 2002-07-02
6388853 Method and apparatus providing final test and trimming for a power supply controller Alex B. Djenguerian, Erdem Bircan 2002-05-14
6366481 Method and apparatus providing a multi-function terminal for a power supply controller Alex B. Djenguerian, Leif Lund 2002-04-02
6362981 Output feedback and under-voltage detection system Alex Dienguerian, Leif Lund 2002-03-26
6356464 Method and apparatus providing a multi-function terminal for a power supply controller Alex B. Djenguerian, Leif Lund 2002-03-12
6351398 Method and apparatus providing a multi-function terminal for a power supply controller Alex B. Djenguerian, Leif Lund 2002-02-26
6337788 Fault condition protection Alex B. Djenguerian, Leif Lund 2002-01-08
6313976 Method and apparatus providing a multi-function terminal for a power supply controller Alex B. Djenguerian, Leif Lund 2001-11-06
6304462 Method and apparatus providing a multi-function terminal for a power supply controller Alex B. Djenguerian, Leif Lund 2001-10-16
6297623 Off-line converter with digital control Alex B. Djenguerian, Leif Lund 2001-10-02
6249876 Frequency jittering control for varying the switching frequency of a power supply Alex B. Djenguerian, Leif Lund 2001-06-19
6233161 Switched mode power supply responsive to voltage across energy transfer element David Hugh Matthews 2001-05-15
6226190 Off-line converter with digital control Alex B. Djenguerian 2001-05-01
6212079 Method and apparatus for improving efficiency in a switching regulator at light loads Alex B. Djenguerian 2001-04-03
6154377 Method and apparatus reducing overshoot in a power supply controller Alex B. Djenguerian 2000-11-28
6147883 Output feedback and under-voltage detection Alex B. Djenguerian, Leif Lund 2000-11-14
5973945 Coupled inductor power supply with reflected feedback regulation circuitry William M. Polivka, Clifford James Walker 1999-10-26
5602724 Low-cost, high-voltage, flyback power supply 1997-02-11
5469334 Plastic quad-packaged switched-mode integrated circuit with integrated transformer windings and mouldings for transformer core pieces 1995-11-21
5461303 Power factor correction precompensation circuit Brooks R. Leman 1995-10-24
5313381 Three-terminal switched mode power supply integrated circuit 1994-05-17
5285369 Switched mode power supply integrated circuit with start-up self-biasing 1994-02-08