Inventor · disambiguated record
Kohji Maki
Also filed as: MAKI KOHJI
39 granted patents·10 pending applications·293 citations·filing 1998–2020
97Inventor score
Files withHITACHI LTD34HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD3HITACHI CABLE2AOYAMA YASUAKI1HITACHI AUTOMOTIVE SYSTEMS LTD1
Top patents by PatentIndex Score
49 records- 0189US6623255B2Fluid transfer apparatusHITACHI LTD·Filed 2001·Granted Sep 23, 2003·44 cites·6 claims
- 0287US11269322B2Failure diagnosis systemHITACHI LTD·Filed 2018·Granted Mar 8, 2022·4 cites·7 claims
- 0384US6548920B2Linear motor and method of producing the sameHITACHI LTD·Filed 2001·Granted Apr 15, 2003·33 cites·7 claims
- 0483US7138734B2Linear drive unit reducing stress generated in movable part in horizontal directionHITACHI LTD·Filed 2005·Granted Nov 21, 2006·12 cites·3 claims
- 0580US7187175B2Magnet for NMR analyzer and NMR analyzer using the sameHITACHI LTD·Filed 2006·Granted Mar 6, 2007·8 cites·24 claims
- 0679US6926115B2Angle sensor, angle-torque sensor and electric power steering unit using sameHITACHI CABLE·Filed 2003·Granted Aug 9, 2005·18 cites·20 claims
- 0778US10295995B2Machine diagnostic apparatus and machine diagnostic methodHITACHI LTD·Filed 2015·Granted May 21, 2019·3 cites·8 claims
- 0876US6541880B2Linear motorHITACHI LTD·Filed 2001·Granted Apr 1, 2003·21 cites·6 claims
- 0974US6548919B2Linear motorHITACHI LTD·Filed 2001·Granted Apr 15, 2003·20 cites·18 claims
- 1073US6570274B2Electric motorHITACHI LTD·Filed 2001·Granted May 27, 2003·18 cites·15 claims
- 1172US7336077B2Magnet for NMR analyzer and NMR analyzer using the sameHITACHI LTD·Filed 2006·Granted Feb 26, 2008·5 cites·14 claims
- 1271US7057327B2Vehicular alternatorHITACHI LTD·Filed 2001·Granted Jun 6, 2006·17 cites·9 claims
- 1370US9759774B2Anomaly diagnosis system, method, and apparatusHITACHI LTD·Filed 2016·Granted Sep 12, 2017·1 cites·17 claims
- 1469US9810743B2Deterioration diagnosis systemHITACHI LTD·Filed 2015·Granted Nov 7, 2017·1 cites·17 claims
- 1568US11047882B2Non-contact voltage measurement device and diagnosis systemHITACHI LTD·Filed 2016·Granted Jun 29, 2021·1 cites·14 claims
- 1668US6614137B2Linear motor, driving and control system thereof and manufacturing method thereofHITACHI LTD·Filed 2001·Granted Sep 2, 2003·14 cites·28 claims
- 1767US7141977B2Magnet for NMR analyzer and NMR analyzer using the sameHITACHI LTD·Filed 2004·Granted Nov 28, 2006·10 cites·20 claims
- 1864US6943465B2Linear motor and manufacturing method thereofHITACHI LTD·Filed 2004·Granted Sep 13, 2005·8 cites·18 claims
- 1964US6825581B1Linear motor and production method thereforHITACHI LTD·Filed 2000·Granted Nov 30, 2004·9 cites·10 claims
- 2061US12061236B2Power conversion device, rotating machine system, and diagnosis methodHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD·Filed 2019·Granted Aug 13, 2024·0 cites·11 claims
- 2159US7777371B2Linear drive apparatus having cores and coils which are positioned on opposite sides of the coresHITACHI LTD·Filed 2005·Granted Aug 17, 2010·2 cites·4 claims
- 2257US12181865B2Operating state classification system, and operating state classification methodHITACHI LTD·Filed 2020·Granted Dec 31, 2024·0 cites·9 claims
- 2357US7312542B2Linear motor and manufacturing method thereofHITACHI LTD·Filed 2005·Granted Dec 25, 2007·1 cites·8 claims
- 2457US7093687B2Angle sensor, angle-torque sensor and electric power steering unit using sameHITACHI CABLE·Filed 2005·Granted Aug 22, 2006·3 cites·5 claims
- 2556US11193978B2Power conversion device, rotating machine system using same, and diagnosis method for sameHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD·Filed 2018·Granted Dec 7, 2021·0 cites·12 claims
- 2655US7157912B2Apparatus for generating homogeneous magnetic fieldHITACHI LTD·Filed 2005·Granted Jan 2, 2007·2 cites·8 claims
- 2755US6753627B2Linear motorHITACHI LTD·Filed 2001·Granted Jun 22, 2004·7 cites·12 claims
- 2854US7004694B2Linear drive apparatusHITACHI LTD·Filed 2003·Granted Feb 28, 2006·6 cites·10 claims
- 2953US10067190B2Insulation diagnostic system or rotating machineHITACHI LTD·Filed 2014·Granted Sep 4, 2018·0 cites·21 claims
- 3052US6876108B2Linear motor, its controlling method, and XY tableHITACHI LTD·Filed 2003·Granted Apr 5, 2005·6 cites·15 claims
- 3151US8049369B2Power inverter controller and methodHITACHI LTD·Filed 2009·Granted Nov 1, 2011·2 cites·12 claims
- 3247US7049913B2Superconductivity magnet apparatusHITACHI LTD·Filed 2004·Granted May 23, 2006·3 cites·19 claims
- 3347US2015381005A1Rotary MachineHITACHI LTD·Filed 2013·Application pending·0 cites
- 3445US10218252B2Linear motor and positioning apparatusAOYAMA YASUAKI·Filed 2010·Granted Feb 26, 2019·0 cites·13 claims
- 3545US10209310B2Rotary machine diagnostic systemHITACHI LTD·Filed 2016·Granted Feb 19, 2019·0 cites·12 claims
- 3645US6975048B2Drive apparatus and XY table utilizing the sameHITACHI LTD·Filed 2003·Granted Dec 13, 2005·3 cites·10 claims
- 3745US6434491B1Method of analyzing electromagnetic fields in rotary machine and electromagnetic field analyzerHITACHI LTD·Filed 1998·Granted Aug 13, 2002·11 cites·10 claims
- 3845US2022373588A1Electric power conversion device, system using same, and diagnostic method for sameHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD·Filed 2020·Application pending·0 cites
- 3939US11209487B2Rotor diagnostic apparatus, rotor diagnostic method, and rotor diagnostic programHITACHI LTD·Filed 2017·Granted Dec 28, 2021·0 cites·7 claims
- 4038US2013140930A1Electric rotating machine and method for manufacturing a stator core for the electric rotating machineKOKA HIDETOSHI·Filed 2011·Application pending·0 cites
- 4137US2002175583A1Permanent magnet type rotating electrical machine and air conditioner using itFiled 2001·Application pending·0 cites
- 4237US2018059656A1Machine Diagnostic Device and Machine Diagnostic MethodHITACHI LTD·Filed 2015·Application pending·0 cites
- 4337US2002175584A1Permanent magnet type rotating electrical machineFiled 2001·Application pending·0 cites
- 4436US9506995B2Magnetic field analysis programs and magnetic field analysis methodsMAKI KOHJI·Filed 2012·Granted Nov 29, 2016·0 cites·7 claims
- 4536US2004189104A1Drive unitFiled 2004·Application pending·0 cites
- 4635US2014042863A1Brushed Direct Current Motor and Brake System for Vehicle Using The SameHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Application pending·0 cites
- 4735US2003155819A1Drive unitFiled 2002·Application pending·0 cites
- 4835US2002183946A1Method of analyzing electromagnetic fields in rotary machine and electromagnetic field analyzerFiled 2002·Application pending·0 cites
- 4933US8781763B2Method for analyzing operating point of permanent magnet, program therefor, and recording mediumKAKUGAWA SHIGERU·Filed 2011·Granted Jul 15, 2014·0 cites·9 claims
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