Inventor · disambiguated record
Nigel Paul Schofield
Also filed as: SCHOFIELD NIGEL · SCHOFIELD NIGEL P · SCHOFIELD NIGEL PAUL
61 granted patents·22 pending applications·256 citations·filing 1992–2023
98Inventor score
Top patents by PatentIndex Score
83 records- 0194US9621014B2Torque ripple and radial force reduction in double-rotor switched reluctance machinesUNIV MCMASTER·Filed 2015·Granted Apr 11, 2017·9 cites·20 claims
- 0290US12173707B2Adjustable scroll pumpEDWARDS LTD·Filed 2020·Granted Dec 24, 2024·2 cites·13 claims
- 0387US12025128B2Scroll pump with a plurality of bellows sealing a plurality of adjustment membersEDWARDS LTD·Filed 2021·Granted Jul 2, 2024·1 cites·17 claims
- 0486US8323006B2Scroll pump with an electromagnetic drive mechanismSCHOFIELD NIGEL PAUL·Filed 2006·Granted Dec 4, 2012·12 cites·5 claims
- 0580US11421689B2Pump assembly with sealing protrusion on stator bore portionEDWARDS LTD·Filed 2017·Granted Aug 23, 2022·1 cites·15 claims
- 0679US11515771B2Alternating-current driven, salient-teeth reluctance motor with concentrated windingsENEDYM INC·Filed 2018·Granted Nov 29, 2022·2 cites·10 claims
- 0779US10947974B2Vacuum scroll pumpEDWARDS LTD·Filed 2017·Granted Mar 16, 2021·1 cites·9 claims
- 0879US9869317B2PumpEDWARDS LTD·Filed 2013·Granted Jan 16, 2018·2 cites·18 claims
- 0979US8702407B2Multistage roots vacuum pump having different tip radius and meshing clearance from inlet stage to exhaust stageSCHOFIELD NIGEL PAUL·Filed 2011·Granted Apr 22, 2014·2 cites·19 claims
- 1079US8500422B2Vacuum pumpDOWDESWELL STEPHEN·Filed 2007·Granted Aug 6, 2013·8 cites·27 claims
- 1178US10312780B2Double-rotor switched reluctance machine with segmented rotorsUNIV MCMASTER·Filed 2015·Granted Jun 4, 2019·2 cites·20 claims
- 1274US10309401B2Vacuum exhaust system and channel-switching valve used in this vacuum exhaust systemEDWARDS LTD·Filed 2016·Granted Jun 4, 2019·2 cites·4 claims
- 1374US9097252B2Scroll pump including drive shaft extending through fixed scrollSCHOFIELD NIGEL PAUL·Filed 2011·Granted Aug 4, 2015·2 cites·17 claims
- 1473US9920761B2Vacuum pump rotor for a vacuum pump having a roots pumping mechanismEDWARDS LTD·Filed 2015·Granted Mar 20, 2018·2 cites·16 claims
- 1573US7866940B2Vacuum pumpEDWARDS LTD·Filed 2004·Granted Jan 11, 2011·13 cites·17 claims
- 1672US12460639B2Scroll pump with bearing diaphragmEDWARDS LTD·Filed 2023·Granted Nov 4, 2025·0 cites·11 claims
- 1772US9279426B2Multi stage, clam shell vacuum pumpSCHOFIELD NIGEL PAUL·Filed 2008·Granted Mar 8, 2016·4 cites·14 claims
- 1871US8880134B2Superconductor deviceHUSBAND STEPHEN M·Filed 2011·Granted Nov 4, 2014·2 cites·20 claims
- 1971US5848873AVacuum pumpsBOC GROUP PLC·Filed 1997·Granted Dec 15, 1998·33 cites·9 claims
- 2069US10337517B2Gas transfer vacuum pumpEDWARDS LTD·Filed 2013·Granted Jul 2, 2019·2 cites·25 claims
- 2169US9249805B2Vacuum pumpEDWARDS LTD·Filed 2014·Granted Feb 2, 2016·1 cites·19 claims
- 2267US12359665B2Vacuum pump with reduced seal requirementsEDWARDS LTD·Filed 2022·Granted Jul 15, 2025·0 cites·13 claims
- 2367US8672607B2Vacuum pumpSTONES IAN DAVID·Filed 2010·Granted Mar 18, 2014·1 cites·44 claims
- 2465US9086071B2Side-channel pump with axial gas bearingSCHOFIELD NIGEL PAUL·Filed 2010·Granted Jul 21, 2015·1 cites·14 claims
- 2565US6379135B2Vacuum pumpsBOC GROUP PLC·Filed 2001·Granted Apr 30, 2002·9 cites·4 claims
- 2664US6129534AVacuum pumpsBOC GROUP PLC·Filed 1999·Granted Oct 10, 2000·18 cites·2 claims
- 2762US11143191B2Drag pump and a set of vacuum pumps including a drag pumpEDWARDS LTD·Filed 2018·Granted Oct 12, 2021·0 cites·15 claims
- 2861US12049891B2Scroll pump having a biasing apparatus for axially movable fixed and orbiting scrolls against each other via first and second pads that formed material from fixed and orbiting scrollsEDWARDS LTD·Filed 2020·Granted Jul 30, 2024·0 cites·10 claims
- 2958US12258963B2Scroll pump with fluid recirculation valveEDWARDS LTD·Filed 2021·Granted Mar 25, 2025·0 cites·12 claims
- 3058US12110896B2Axial flow vacuum pump with curved rotor and stator bladesEDWARDS LTD·Filed 2021·Granted Oct 8, 2024·0 cites·13 claims
- 3158US10533552B2Rotary screw vacuum pumpsEDWARDS LTD·Filed 2015·Granted Jan 14, 2020·0 cites·20 claims
- 3257US12286974B2Multi-stage turbomolecular pumpEDWARDS LTD·Filed 2019·Granted Apr 29, 2025·0 cites·15 claims
- 3356US7614844B2Vacuum pumping arrangementEDWARDS LTD·Filed 2004·Granted Nov 10, 2009·7 cites·27 claims
- 3454US6109864AVacuum pumpsBOC GROUP PLC·Filed 1998·Granted Aug 29, 2000·18 cites·7 claims
- 3553US12018691B2Vacuum pumpEDWARDS LTD·Filed 2021·Granted Jun 25, 2024·0 cites·14 claims
- 3653US11885341B2Rotor support and vacuum pump with such a rotor supportEDWARDS LTD·Filed 2020·Granted Jan 30, 2024·0 cites·15 claims
- 3753US8500425B2Roots pumpsSCHOFIELD NIGEL PAUL·Filed 2009·Granted Aug 6, 2013·0 cites·14 claims
- 3853US6916162B2Scroll compressorBOC GROUP PLC·Filed 2003·Granted Jul 12, 2005·5 cites·12 claims
- 3953US6244841B1Vacuum pumpsBOC GROUP PLC·Filed 1998·Granted Jun 12, 2001·12 cites·6 claims
- 4052US11401935B2Twin shaft pumps and a method of pumpingEDWARDS LTD·Filed 2018·Granted Aug 2, 2022·0 cites·15 claims
- 4152US10161399B2Scroll pumpEDWARDS LTD·Filed 2013·Granted Dec 25, 2018·0 cites·15 claims
- 4252US9334873B2Side-channel compressor with symmetric rotor disc which pumps in parallelSCHOFIELD NIGEL PAUL·Filed 2010·Granted May 10, 2016·0 cites·16 claims
- 4352US2025109747A1Scroll pumpEDWARDS LTD·Filed 2023·Application pending·0 cites
- 4451US9127685B2Regenerative vacuum pump with axial thrust balancing meansSCHOFIELD NIGEL PAUL·Filed 2010·Granted Sep 8, 2015·0 cites·13 claims
- 4551US5772395AVacuum pumpsBOC GROUP PLC·Filed 1996·Granted Jun 30, 1998·16 cites·10 claims
- 4650US2010158728A1Vacuum pumpSCHOFIELD NIGEL PAUL·Filed 2006·Application pending·0 cites
- 4749US11933284B2Multiple chamber vacuum exhaust systemEDWARDS LTD·Filed 2019·Granted Mar 19, 2024·0 cites·15 claims
- 4849US11719244B2Pump having liquid blades and an associated method of pumpingEDWARDS LTD·Filed 2018·Granted Aug 8, 2023·0 cites·23 claims
- 4949US6626639B2Vacuum pumpBOC GROUP PLC·Filed 2001·Granted Sep 30, 2003·4 cites·12 claims
- 5049US5611660ACompound vacuum pumpsBOC GROUP PLC·Filed 1995·Granted Mar 18, 1997·16 cites·4 claims
Showing the top 50 of 83 patent records by PatentIndex Score.
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