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Michael A. de Rooij — 50 Patents

ECEfficient Power Conversion: 26 patents #2 of 35Top 6%
GE: 20 patents #1,372 of 36,430Top 4%
Lockheed Martin: 2 patents #1,607 of 6,507Top 25%
Culver City, CA: #19 of 898 inventorsTop 3%
California: #8,040 of 386,348 inventorsTop 3%
Overall (All Time): #53,743 of 4,157,543Top 2%
50 Patents All Time
Michael A. de Rooij has been granted 50 US patents while listed as an inventor at Efficient Power Conversion. The first was granted in 2004 and the most recent in November 2025. Michael A. de Rooij ranks #53,743 of 4,157,543 US inventors in our database (top 1.3%). Patent records list Michael A. de Rooij in Culver City, CA, US.

Issued Patents All Time

Showing 1–25 of 50 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12463634 Synchronizing turn-on/turn-off times of parallel power FETs Edward K. Lee, Ravi Shanker Ananth, Michael Chapman, Marco Palma 2025-11-04
12463638 Driver circuit for GaN FET solid state relay — 2025-11-04
12355435 Universal power FET driver IC architecture Edward K. Lee, Ravi Ananth, Michael Chapman, David Tam 2025-07-08
12218593 Half-bridge circuits with symmetrical layout of parallel transistors and capacitors John Stanley Glaser, Yuanzhe Zhang 2025-02-04
12113524 Active bootstrapping drivers Edward K. Lee, Michael Chapman, Ravi Ananth 2024-10-08
11646656 Multi-level converter with voltage divider for pre-charging flying capacitor Yuanzhe Zhang, Jianjing Wang 2023-05-09
11038503 GaN driver using active pre-driver with feedback Edward K. Lee, Ravi Ananth, Michael Chapman 2021-06-15
11019718 Low parasitic inductance structure for power switched circuits John Stanley Glaser 2021-05-25
10931244 Common gate amplifier with high isolation from output to input John Stanley Glaser 2021-02-23
10901011 Magnetic field pulse current sensing for timing-sensitive circuits John Stanley Glaser 2021-01-26
10892650 Multi-coil large area wireless power system Yuanzhe Zhang 2021-01-12
10862337 Large area scalable highly resonant wireless power coil Yuanzhe Zhang 2020-12-08
10840742 Wireless power receiver synchronization detection circuit Yuanzhe Zhang 2020-11-17
10790811 Cascaded bootstrapping GaN power switch and driver Edward K. Lee, Ravi Ananth, Michael Chapman, Robert Beach 2020-09-29
10784794 GaN FET gate driver for self-oscillating converters — 2020-09-22
10637456 Low voltage drop cascaded synchronous bootstrap supply circuit David C. Reusch, Suvankar Biswas 2020-04-28
10454472 Bootstrap capacitor over-voltage management circuit for GaN transistor based power converters David C. Reusch, John Stanley Glaser 2019-10-22
10312260 GaN transistors with polysilicon layers used for creating additional components Jianjun Cao, Robert Beach, Alexander Lidow, Alana Nakata, Guangyuan Zhao +8 more 2019-06-04
10243546 Enhancement mode FET gate driver IC David C. Reusch, Suvankar Biswas 2019-03-26
10230341 High efficiency voltage mode class D topology Johan Tjeerd Strydom, Bhaskaran R. Nair 2019-03-12
10218353 Low distortion RF switch John Stanley Glaser, David C. Reusch 2019-02-26
10084445 High voltage zero QRR bootstrap supply Johan Tjeerd Strydom, David C. Reusch 2018-09-25
9887677 High efficiency voltage mode class D topology Johan Tjeerd Strydom, Bhaskaran R. Nair 2018-02-06
9837438 GaN transistors with polysilicon layers used for creating additional components Jianjun Cao, Robert Beach, Alexander Lidow, Alana Nakata, Guangyuan Zhao +8 more 2017-12-05
9667245 High voltage zero QRR bootstrap supply Johan Tjeerd Strydom, David C. Reusch 2017-05-30

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