Inventor · disambiguated record
David James Powell
Also filed as: POWELL DAVID · POWELL DAVID J · POWELL DAVID JAMES
16 granted patents·3 pending applications·192 citations·filing 1993–2023
93Inventor score
Top patents by PatentIndex Score
19 records- 0192US9841145B1Axial piercing mechanism for pressurized gas canisterSPARTON CORP·Filed 2016·Granted Dec 12, 2017·11 cites·20 claims
- 0291US9985512B2Large magnetically geared machinesMAGNOMATICS LTD·Filed 2015·Granted May 29, 2018·6 cites·20 claims
- 0390US9219395B2Large magnetically geared machinesPOWELL DAVID JAMES·Filed 2011·Granted Dec 22, 2015·15 cites·24 claims
- 0489US10680502B2Magnetically geared apparatus and a pole piece for such apparatusMAGNOMATICS LTD·Filed 2016·Granted Jun 9, 2020·5 cites·15 claims
- 0589US8487500B2Cooling arrangement of an electrical machineCULLEN JOHN JAMES ANTHONY·Filed 2008·Granted Jul 16, 2013·22 cites·43 claims
- 0686US8968042B2Electric marine propulsion device with integral magnetic gearingCALVERLEY STUART·Filed 2010·Granted Mar 3, 2015·14 cites·13 claims
- 0781US9425655B2Magnetic pole-piece supportCALVERLEY STUART DAVID·Filed 2009·Granted Aug 23, 2016·12 cites·23 claims
- 0880US8508095B2Flux-switching machineHUSBAND STEPHEN MARK·Filed 2008·Granted Aug 13, 2013·11 cites·18 claims
- 0980US5869767AUltrasonic transducerUNIV STRATHCLYDE·Filed 1993·Granted Feb 9, 1999·45 cites·5 claims
- 1078US9612085B2Payload launch system and methodSPARTON CORP·Filed 2015·Granted Apr 4, 2017·4 cites·20 claims
- 1176US8662441B2Unmanned aerial vehicle launch systemPOWELL DAVID·Filed 2012·Granted Mar 4, 2014·43 cites·20 claims
- 1272US11190094B2Magnetically geared apparatusMAGNOMATICS LTD·Filed 2017·Granted Nov 30, 2021·1 cites·18 claims
- 1371US11742740B2Magnetically geared apparatusMAGNOMATICS LTD·Filed 2021·Granted Aug 29, 2023·0 cites·19 claims
- 1468US10102953B2Apparatus and methods for magnet retentionMAGNOMATICS LTD·Filed 2014·Granted Oct 16, 2018·3 cites·18 claims
- 1556US2024106314A1Magnetically geared apparatus and rotorMAGNOMATICS LTD·Filed 2023·Application pending·0 cites
- 1651US2024235360A1Magnetic geared rotating machine, power generation system, and drive systemMITSUBISHI HEAVY IND LTD·Filed 2022·Application pending·0 cites
- 1746US2013200623A1Magnetically geared machine for marine generationPOWELL DAVID JAMES·Filed 2010·Application pending·0 cites
- 1845US10978942B2Magnetically geared apparatusMAGNOMATICS LTD·Filed 2017·Granted Apr 13, 2021·0 cites·12 claims
- 1936US8193750B2Electrical machine arrangementTRAINER DAVID REGINALD·Filed 2009·Granted Jun 5, 2012·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →