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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 26–50 of 206 patents

Patent #TitleCo-InventorsDate
9837911 Switched mode power converter controller with ramp time modulation Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong 2017-12-05
9831188 Noise cancellation for a magnetically coupled communication link utilizing a lead frame David Kung, David Michael Hugh Matthews 2017-11-28
9762129 Techniques for controlling a power converter using multiple controllers Alex B. Djenguerian, Sheng Liu 2017-09-12
9742288 Output-side controller with switching request at relaxation ring extremum David Michael Hugh Matthews, Vikram Balakrishnan, Roland Sylvere Saint-Pierre, Zhao-Jun Wang, Giao Minh Pham +1 more 2017-08-22
9735665 Method and apparatus for implementing a power converter input terminal voltage discharge circuit David Kung, Raymond Kenneth Orr, David Michael Hugh Matthews 2017-08-15
9627985 Power converter output voltage clamp and supply terminal David Michael Hugh Matthews, Alex B. Djenguerian 2017-04-18
9543840 Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller Alex B. Djenguerian 2017-01-10
9490706 Power supply controller with input voltage compensation for efficiency and maximum power output Alex B. Djenguerian, Leif Lund 2016-11-08
9444357 Active reduced voltage switching using secondary switch David Michael Hugh Matthews, Rajko Duvnjak, Roland Sylvere Saint-Pierre 2016-09-13
9401660 Monolithic AC/DC converter for generating DC supply voltage David Kung 2016-07-26
9349717 Noise cancellation for a magnetically coupled communication link utilizing a lead frame David Kung, David Michael Hugh Matthews 2016-05-24
9331004 Magnetically coupled galvanically isolated communication using lead frame David Michael Hugh Matthews 2016-05-03
9282602 Light driver control system 2016-03-08
9275946 Switch mode power converters using magnetically coupled galvanically isolated lead frame communication David Michael Hugh Matthews 2016-03-01
9246392 Switched mode power converter controller with ramp time modulation Roland Sylvere Saint-Pierre, Giao Minh Pham, Lance M. Wong 2016-01-26
9219418 Method and apparatus to reduce audio frequencies in a switching power supply Arthur B. Odell 2015-12-22
9166486 Power converter using multiple controllers David Michael Hugh Matthews, David Kung 2015-10-20
9166479 Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller Alex B. Djenguerian 2015-10-20
9166575 Low threshold voltage comparator Alex B. Djenguerian, Leif Lund 2015-10-20
9136765 Techniques for controlling a power converter using multiple controllers Alex B. Djenguerian, Sheng Liu 2015-09-15
9071146 AC voltage sensor with low power consumption David Michael Hugh Matthews, Zhao-Jun Wang 2015-06-30
9065340 Method and apparatus for implementing a power converter input terminal voltage discharge circuit David Kung, Raymond Kenneth Orr, David Michael Hugh Matthews 2015-06-23
9035435 Magnetically coupled galvanically isolated communication using lead frame David Michael Hugh Matthews 2015-05-19
9019728 Power converter output voltage clamp and supply terminal David Michael Hugh Matthews, Alex B. Djenguerian 2015-04-28
8976561 Switch mode power converters using magnetically coupled galvanically isolated lead frame communication David Michael Hugh Matthews 2015-03-10