Inventor · disambiguated record
Yasushi Maejima
Also filed as: MAEJIMA YASUSHI
32 granted patents·5 pending applications·234 citations·filing 1996–2022
96Inventor score
Files withEDWARDS JAPAN LTD16BOC TECHNOLOGIES LTD6OHTACHI YOSHINOBU3SEIKO INSTR INC3BOC EDWARDS JAPAN LTD1
Top patents by PatentIndex Score
37 records- 0188US6465924B1Magnetic bearing device and a vacuum pump equipped with the sameSEIKO INSTR INC·Filed 2000·Granted Oct 15, 2002·58 cites·11 claims
- 0278US8690525B2Vacuum pumpOHTACHI YOSHINOBU·Filed 2009·Granted Apr 8, 2014·10 cites·15 claims
- 0375US5955811AElectromagnetic rotary machine having magnetic bearingCHIBA AKIRA·Filed 1996·Granted Sep 21, 1999·44 cites·18 claims
- 0473US6559568B2Magnetic bearing type vacuum pumpSEIKO INSTR INC·Filed 2002·Granted May 6, 2003·15 cites·21 claims
- 0569US10364814B2Vacuum pumpEDWARDS JAPAN LTD·Filed 2013·Granted Jul 30, 2019·2 cites·10 claims
- 0664US6752588B2Vacuum pumpBOC TECHNOLOGIES LTD·Filed 2002·Granted Jun 22, 2004·14 cites·12 claims
- 0763US6854956B2Turbo-molecular pumpBOC TECHNOLOGIES LTD·Filed 2003·Granted Feb 15, 2005·12 cites·20 claims
- 0863US6709226B2Vacuum pumpBOC TECHNOLOGIES LTD·Filed 2002·Granted Mar 23, 2004·12 cites·8 claims
- 0962US6824349B2Vacuum pumpBOC TECHNOLOGIES LTD·Filed 2002·Granted Nov 30, 2004·12 cites·19 claims
- 1060US10001126B2Vacuum pumpMIWATA TOORU·Filed 2010·Granted Jun 19, 2018·4 cites·5 claims
- 1160US2018128280A1Rotor and vacuum pump equipped with sameEDWARDS JAPAN LTD·Filed 2017·Application pending·0 cites
- 1257US11384770B2Vacuum pump, and control device of vacuum pumpEDWARDS JAPAN LTD·Filed 2019·Granted Jul 12, 2022·0 cites·2 claims
- 1357US9982682B2Rotor and vacuum pump equipped with sameEDWARDS JAPAN LTD·Filed 2013·Granted May 29, 2018·1 cites·12 claims
- 1457US6705830B2Vacuum pumpBOC EDWARDS TECHONLOGIES LTD·Filed 2002·Granted Mar 16, 2004·8 cites·9 claims
- 1556US12392352B2Vacuum exhaust apparatus and vacuum pump used thereinEDWARDS JAPAN LTD·Filed 2020·Granted Aug 19, 2025·0 cites·10 claims
- 1656US12158152B2Vacuum pump and stator component of thread groove pump portion of the vacuum pumpEDWARDS JAPAN LTD·Filed 2020·Granted Dec 3, 2024·0 cites·6 claims
- 1754US12510090B2Vacuum pump, vacuum pump controller, and remote controllerEDWARDS JAPAN LTD·Filed 2022·Granted Dec 30, 2025·0 cites·6 claims
- 1854US11480182B2Vacuum pump, cylindrical portion used in vacuum pump, and base portionEDWARDS JAPAN LTD·Filed 2019·Granted Oct 25, 2022·0 cites·7 claims
- 1953US11946482B2Vacuum pump, rotor, and washerEDWARDS JAPAN LTD·Filed 2020·Granted Apr 2, 2024·0 cites·8 claims
- 2051US12044251B2Vacuum pumpEDWARDS JAPAN LTD·Filed 2020·Granted Jul 23, 2024·0 cites·18 claims
- 2151US7753661B2Vacuum pumpBOC EDWARDS JAPAN LTD·Filed 2004·Granted Jul 13, 2010·5 cites·13 claims
- 2250US10704555B2Stator-side member and vacuum pumpEDWARDS JAPAN LTD·Filed 2013·Granted Jul 7, 2020·0 cites·20 claims
- 2349US11889595B2Vacuum pump and heating device thereforEDWARDS JAPAN LTD·Filed 2018·Granted Jan 30, 2024·0 cites·9 claims
- 2449US10480523B2Vacuum pumpEDWARDS JAPAN LTD·Filed 2016·Granted Nov 19, 2019·0 cites·10 claims
- 2546US10578158B2Vacuum pump and abnormality cause estimating method for vacuum pumpEDWARDS JAPAN LTD·Filed 2015·Granted Mar 3, 2020·0 cites·13 claims
- 2646US6890145B2Vacuum pumpBOC TECHNOLOGIES LTD·Filed 2002·Granted May 10, 2005·11 cites·27 claims
- 2745US6814536B2Vacuum pumpBOC TECHNOLOGIES LTD·Filed 2002·Granted Nov 9, 2004·2 cites·14 claims
- 2845US2007115209A1Luminance control apparatus for light emitting deviceDENSO CORP·Filed 2006·Application pending·0 cites
- 2944US7390164B2Fixing structure for fixing rotor to rotor shaft, and turbo molecular pump having the fixing structureEDWARDS JAPAN LTD·Filed 2004·Granted Jun 24, 2008·9 cites·5 claims
- 3043US11466692B2Adaptor and vacuum pumpEDWARDS JAPAN LTD·Filed 2016·Granted Oct 11, 2022·0 cites·11 claims
- 3141US6023115AMagnetic bearing apparatus with radial position correcting electromagnetSEIKO SEIKI KK·Filed 1997·Granted Feb 8, 2000·8 cites·30 claims
- 3239US2012141254A1Vacuum pump and member used for vacuum pumpOHTACHI YOSHINOBU·Filed 2010·Application pending·0 cites
- 3339US2004212333A1Motor control system, motor apparatus, vacuum pump, correction current value measuring apparatus, and motor control methodFiled 2004·Application pending·0 cites
- 3438US8403652B2Molecular pump and flange having shock absorbing memberMAEJIMA YASUSHI·Filed 2007·Granted Mar 26, 2013·0 cites·42 claims
- 3536US9790946B2Exhaust pumpOHTACHI YOSHINOBU·Filed 2011·Granted Oct 17, 2017·0 cites·9 claims
- 3636US6499973B2Turbo molecular pumpSEIKO INSTR INC·Filed 1998·Granted Dec 31, 2002·7 cites·8 claims
- 3733US2003021672A1Vacuum pumpFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →