Inventor · disambiguated record
Toshiaki Kawashima
Also filed as: KAWASHIMA TOSHIAKI
14 granted patents·3 pending applications·200 citations·filing 1989–2021
91Inventor score
Top patents by PatentIndex Score
17 records- 0194US5093754AControl system for a magnetic levitation bodySEIKO SEIKI KK·Filed 1989·Granted Mar 3, 1992·71 cites·8 claims
- 0286US6759827B2Control circuit of brush-less motor, control circuit of sensor-less brush-less motor, brush-less motor apparatus, sensor-less brush-less motor apparatus and vacuum pump apparatusBOC EDWARDS JAPAN LTD·Filed 2001·Granted Jul 6, 2004·38 cites·20 claims
- 0380US6184640B1DC brushless motor, magnetic bearing device and turbomolecular pump deviceSEIKO SEIKI KK·Filed 1999·Granted Feb 6, 2001·48 cites·14 claims
- 0476US7091641B2Magnetic bearing device and turbo molecular pump with the magnetic bearing device mounted theretoBOC EDWARDS JAPAN LTD·Filed 2004·Granted Aug 15, 2006·14 cites·34 claims
- 0576US6949853B2Magnetic bearing device and pump device with the magnetic bearing device mounted theretoBOC EDWARDS JAPAN LTD·Filed 2004·Granted Sep 27, 2005·15 cites·27 claims
- 0670US10371159B2Magnetic bearing device, and vacuum pump having sameEDWARDS JAPAN LTD·Filed 2014·Granted Aug 6, 2019·2 cites·20 claims
- 0768US10359046B2Magnetic bearing device and vacuum pumpEDWARDS JAPAN LTD·Filed 2014·Granted Jul 23, 2019·2 cites·18 claims
- 0862US7292425B2Magnetic bearing device and turbo molecular pump with the magnetic bearing device mounted theretoBOC EDWARDS JAPAN LTD·Filed 2005·Granted Nov 6, 2007·2 cites·9 claims
- 0961US8248019B2Brushless motorKAWASHIMA TOSHIAKI·Filed 2008·Granted Aug 21, 2012·6 cites·4 claims
- 1058US7786636B2Magnetic bearing device and a turbo molecular pump with the magnetic bearing device mounted theretoBOC EDWARDS JAPAN LTD·Filed 2005·Granted Aug 31, 2010·2 cites·17 claims
- 1155US11536280B2Vacuum pump, magnetic bearing device, and rotorEDWARDS JAPAN LTD·Filed 2018·Granted Dec 27, 2022·0 cites·9 claims
- 1254US12092123B2Control apparatus and vacuum pump provided with said control apparatusEDWARDS JAPAN LTD·Filed 2020·Granted Sep 17, 2024·0 cites·8 claims
- 1351US11499571B2Vacuum pump and vacuum-pump damperEDWARDS JAPAN LTD·Filed 2019·Granted Nov 15, 2022·0 cites·12 claims
- 1450US2016312826A1Protective bearing, bearing unit, and vacuum pumpEDWARDS JAPAN LTD·Filed 2014·Application pending·0 cites
- 1545US11028853B2Electromagnetic unit, magnetic bearing device, and vacuum pumpEDWARDS JAPAN LTD·Filed 2016·Granted Jun 8, 2021·0 cites·14 claims
- 1643US2023332625A1Harmonic elimination circuit, position detection device, magnetic bearing device and vacuum pumpEDWARDS JAPAN LTD·Filed 2021·Application pending·0 cites
- 1739US2004212333A1Motor control system, motor apparatus, vacuum pump, correction current value measuring apparatus, and motor control methodFiled 2004·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →