Inventor · disambiguated record
Frank Heerdt
Also filed as: HEERDT FRANK · HEERDT FRANK WEINER
4 granted patents·1 pending application·16 citations·filing 2011–2025
65Inventor score
Files withCONTROL TECH LTD1CONTROL TECHNIQUES LTD1HEERDT FRANK1HUAWEI DIGITAL POWER TECH CO LTD1ZHENG DAPENG1
Top patents by PatentIndex Score
5 records- 0179US8508890B2Arc extinguishing hybrid transfer switch and switching methodZHENG DAPENG·Filed 2011·Granted Aug 13, 2013·14 cites·8 claims
- 0273US2025373177A1Soft-switching inverter with a symmetric current sharingHUAWEI DIGITAL POWER TECH CO LTD·Filed 2025·Application pending·0 cites
- 0365US9337640B2Electrical protection device and methodCONTROL TECH LTD·Filed 2014·Granted May 10, 2016·2 cites·20 claims
- 0441US9762141B2Drive circuit for electrical loadCONTROL TECHNIQUES LTD·Filed 2014·Granted Sep 12, 2017·0 cites·9 claims
- 0537US8665569B2Arc extinguishing switch and switching method thereofHEERDT FRANK·Filed 2011·Granted Mar 4, 2014·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →