Inventor · disambiguated record
Donald Folker
Also filed as: FOLKER DONALD · FOLKER DONALD VICTOR
50 granted patents·1 pending application·375 citations·filing 1995–2021
98Inventor score
Files withUNIVERSAL LIGHTING TECH INC33FOLKER DONALD9IBM2UNIVERSAL LIGHTING TECHNOLOGIES INC2XIONG WEI2
Top patents by PatentIndex Score
51 records- 0198US9837194B1Output transformer and resonant inductor in a combined magnetic structureUNIVERSAL LIGHTING TECH INC·Filed 2016·Granted Dec 5, 2017·27 cites·14 claims
- 0296US8498124B1Magnetic circuit board stacking componentFOLKER DONALD·Filed 2009·Granted Jul 30, 2013·54 cites·13 claims
- 0395US9842683B1Bobbin and E-core assembly configuration and method for E-cores and EI-coresUNIVERSAL LIGHTING TECH INC·Filed 2015·Granted Dec 12, 2017·7 cites·10 claims
- 0495US9666355B1Common mode inductor assembly with magnetic I bar defined leakage pathUNIVERSAL LIGHTING TECH INC·Filed 2015·Granted May 30, 2017·9 cites·4 claims
- 0594US9799442B1Magnetic core structures for magnetic assembliesUNIVERSAL LIGHTING TECH INC·Filed 2015·Granted Oct 24, 2017·7 cites·17 claims
- 0694US8242870B1Magnetic component with a notched magnetic core structureFOLKER DONALD·Filed 2009·Granted Aug 14, 2012·29 cites·3 claims
- 0793US10910139B1Compact common mode choke with differential noise suppression and high self resonant frequencyUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Feb 2, 2021·5 cites·7 claims
- 0893US10650959B1Inductor with flux path for high inductance at low loadUNIVERSAL LIGHTING TECH INC·Filed 2017·Granted May 12, 2020·6 cites·9 claims
- 0993US9396865B1Magnetic component with auxiliary winding circuit boardUNIVERSAL LIGHTING TECH INC·Filed 2013·Granted Jul 19, 2016·15 cites·7 claims
- 1093US8031040B1Magnetic component having a bobbin structure with integrated windingUNIVERSAL LIGHTING TECHNOLOGIES INC·Filed 2010·Granted Oct 4, 2011·13 cites·20 claims
- 1191US5777539AInductor using multilayered printed circuit board for windingsIBM·Filed 1995·Granted Jul 7, 1998·75 cites·31 claims
- 1290US9980396B1Low profile magnetic component apparatus and methodsFOLKER DONALD·Filed 2011·Granted May 22, 2018·11 cites·13 claims
- 1387US10930423B1Single magnetic assembly combining three independent magnetics using a modified “E” core with four winding windowsUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Feb 23, 2021·3 cites·9 claims
- 1487US9788430B1Stacked magnetic assemblyUNIVERSAL LIGHTING TECH INC·Filed 2014·Granted Oct 10, 2017·6 cites·14 claims
- 1586US9293246B1Magnetic component with integrated component circuit boardUNIVERSAL LIGHTING TECH INC·Filed 2013·Granted Mar 22, 2016·8 cites·20 claims
- 1686US9183974B1Bobbin apparatus for reducing gap losses in magnetic componentsFOLKER DONALD·Filed 2013·Granted Nov 10, 2015·7 cites·15 claims
- 1786US9136054B1Reduced leakage inductance transformer and winding methodsXIONG WEI·Filed 2010·Granted Sep 15, 2015·7 cites·2 claims
- 1884US10553339B1Common-mode choke with integrated RF inductor windingUNIVERSAL LIGHTING TECH INC·Filed 2019·Granted Feb 4, 2020·2 cites·5 claims
- 1984US9401237B1Core passage step apparatus and methodsFOLKER DONALD·Filed 2012·Granted Jul 26, 2016·6 cites·21 claims
- 2082US10083790B1Method and apparatus for attaching magnetic components to printed circuit boardsUNIVERSAL LIGHTING TECH INC·Filed 2017·Granted Sep 25, 2018·3 cites·5 claims
- 2181US9362044B1Magnetic component with multiple pin row bobbinUNIVERSAL LIGHTING TECH INC·Filed 2014·Granted Jun 7, 2016·5 cites·20 claims
- 2281US8406007B1Magnetic circuit board connector componentFOLKER DONALD·Filed 2009·Granted Mar 26, 2013·10 cites·17 claims
- 2380US11201006B1Bobbin for edge-mounted magnetic coreUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Dec 14, 2021·1 cites·13 claims
- 2480US9805859B1Magnetic component with elevated bobbinUNIVERSAL LIGHTING TECH INC·Filed 2014·Granted Oct 31, 2017·4 cites·20 claims
- 2580US9093212B1Stacked step gap core devices and methodsPINKERTON DEBORAH·Filed 2012·Granted Jul 28, 2015·8 cites·10 claims
- 2680US8212643B1Bobbin for an inductive electronic componentFOLKER DONALD·Filed 2009·Granted Jul 3, 2012·9 cites·20 claims
- 2779US9295145B1Multifunction magnetic device with multiple cores and coilsUNIVERSAL LIGHTING TECH INC·Filed 2014·Granted Mar 22, 2016·4 cites·8 claims
- 2878US10709024B1Low-cost SMT printed circuit board connectorUNIVERSAL LIGHTING TECH INC·Filed 2020·Granted Jul 7, 2020·1 cites·15 claims
- 2977US10943724B1Magnetic core structureUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Mar 9, 2021·1 cites·15 claims
- 3077US10643778B1Magnetic core structure and manufacturing method using a grinding postUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted May 5, 2020·1 cites·5 claims
- 3174US11545293B1Bobbin for edge-mounted magnetic coreUNIVERSAL LIGHTING TECH INC·Filed 2021·Granted Jan 3, 2023·0 cites·9 claims
- 3274US8310160B1Anti-arcing circuit for current-fed parallel resonant inverterXIONG WEI·Filed 2009·Granted Nov 13, 2012·5 cites·8 claims
- 3372US9680244B1Header apparatus for providing electrical connection to a printed circuit board, and daughter card and circuit assembly incorporating the header apparatusUNIVERSAL LIGHTING TECH INC·Filed 2015·Granted Jun 13, 2017·3 cites·17 claims
- 3471US9991045B1Bobbin and core assembly configuration and method for E-core and I-core combinationUNIVERSAL LIGHTING TECH INC·Filed 2015·Granted Jun 5, 2018·1 cites·13 claims
- 3571US9978496B1Stacked magnetic assemblyUNIVERSAL LIGHTING TECH INC·Filed 2017·Granted May 22, 2018·1 cites·20 claims
- 3671US9236179B1Magnetic component apparatus with interconnectable bobbinsUNIVERSAL LIGHTING TECH INC·Filed 2013·Granted Jan 12, 2016·2 cites·13 claims
- 3768US8116089B1Method and apparatus for securing a magnetic component to a printed circuit board for solderingFOLKER DONALD·Filed 2009·Granted Feb 14, 2012·3 cites·20 claims
- 3867US9490058B1Magnetic component with core grooves for improved heat transferKLUSKA TED·Filed 2011·Granted Nov 8, 2016·3 cites·14 claims
- 3966US9629206B1Reducing output ripple current and protecting inverter switches during non-zero voltage switching for isolated buck convertersMAYS II STEPHEN D·Filed 2012·Granted Apr 18, 2017·2 cites·20 claims
- 4063US9721716B1Magnetic component having a core structure with curved openingsFOLKER DONALD·Filed 2011·Granted Aug 1, 2017·1 cites·18 claims
- 4163US7990243B1Gull wing surface mount magnetic structureUNIVERSAL LIGHTING TECHNOLOGIES INC·Filed 2009·Granted Aug 2, 2011·3 cites·20 claims
- 4261US10186809B1Printed circuit board connector with integrated EMI noise suppressionUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Jan 22, 2019·1 cites·20 claims
- 4353US10930424B1Low profile inductorUNIVERSAL LIGHTING TECH INC·Filed 2017·Granted Feb 23, 2021·0 cites·16 claims
- 4451US2020381173A1Common mode inductor with dual leakage pathsUNIVERSAL LIGHTING TECH INC·Filed 2020·Application pending·0 cites
- 4546US11049642B1Dual magnetic component with three core portionsUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Jun 29, 2021·0 cites·15 claims
- 4646US10930429B1Tunable magnetic core structureUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Feb 23, 2021·0 cites·13 claims
- 4745US11049643B1Combined U-core magnetic structureUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Jun 29, 2021·0 cites·10 claims
- 4845US9583852B1PCB holder having a leg with a passageway with a conductive pin therein to electrically connect two PCBsUNIVERSAL LIGHTING TECH INC·Filed 2015·Granted Feb 28, 2017·0 cites·20 claims
- 4942US10186812B1Ferrite wafer and connector assembly for EMI noise suppression on a printed circuit boardUNIVERSAL LIGHTING TECH INC·Filed 2018·Granted Jan 22, 2019·0 cites·21 claims
- 5041US10796841B1Inductor with flux path for high inductance at low loadUNIVERSAL LIGHTING TECH INC·Filed 2017·Granted Oct 6, 2020·0 cites·18 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →