Inventor
MAKI KOHJI
JP39 patents
⚠️ This page may combine multiple inventors who share the name “MAKI KOHJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
32 patentsUS6623255B2Sep 23, 2003
Fluid transfer apparatus
HITACHI LTD44 citations92
US6548920B2Apr 15, 2003
Linear motor and method of producing the same
HITACHI LTD33 citations92
US6541880B2Apr 1, 2003
Linear motor
HITACHI LTD21 citations92
US6614137B2Sep 2, 2003
Linear motor, driving and control system thereof and manufacturing method thereof
HITACHI LTD14 citations84
US6570274B2May 27, 2003
Electric motor
HITACHI LTD18 citations84
US6548919B2Apr 15, 2003
Linear motor
HITACHI LTD20 citations84
US7057327B2Jun 6, 2006
Vehicular alternator
HITACHI LTD17 citations83
US7138734B2Nov 21, 2006
Linear drive unit reducing stress generated in movable part in horizontal direction
HITACHI LTD12 citations80
US6943465B2Sep 13, 2005
Linear motor and manufacturing method thereof
HITACHI LTD8 citations74
US6825581B1Nov 30, 2004
Linear motor and production method therefor
HITACHI LTD9 citations74
US6753627B2Jun 22, 2004
Linear motor
HITACHI LTD7 citations74
US6434491B1Aug 13, 2002
Method of analyzing electromagnetic fields in rotary machine and electromagnetic field analyzer
HITACHI LTD11 citations74
US11269322B2Mar 8, 2022
Failure diagnosis system
HITACHI LTD4 citations73
US7336077B2Feb 26, 2008
Magnet for NMR analyzer and NMR analyzer using the same
HITACHI LTD5 citations72
US7187175B2Mar 6, 2007
Magnet for NMR analyzer and NMR analyzer using the same
HITACHI LTD8 citations72
US7141977B2Nov 28, 2006
Magnet for NMR analyzer and NMR analyzer using the same
HITACHI LTD10 citations72
US7004694B2Feb 28, 2006
Linear drive apparatus
HITACHI LTD6 citations72
US10295995B2May 21, 2019
Machine diagnostic apparatus and machine diagnostic method
HITACHI LTD3 citations68
US7312542B2Dec 25, 2007
Linear motor and manufacturing method thereof
HITACHI LTD1 citations63
US7157912B2Jan 2, 2007
Apparatus for generating homogeneous magnetic field
HITACHI LTD2 citations63
US8049369B2Nov 1, 2011
Power inverter controller and method
HITACHI LTD2 citations62
US7777371B2Aug 17, 2010
Linear drive apparatus having cores and coils which are positioned on opposite sides of the cores
HITACHI LTD2 citations61
US6876108B2Apr 5, 2005
Linear motor, its controlling method, and XY table
HITACHI LTD6 citations61
US6975048B2Dec 13, 2005
Drive apparatus and XY table utilizing the same
HITACHI LTD3 citations60
US11047882B2Jun 29, 2021
Non-contact voltage measurement device and diagnosis system
HITACHI LTD1 citations59
US7049913B2May 23, 2006
Superconductivity magnet apparatus
HITACHI LTD3 citations59
US12181865B2Dec 31, 2024
Operating state classification system, and operating state classification method
HITACHI LTD0 citations52
US9810743B2Nov 7, 2017
Deterioration diagnosis system
HITACHI LTD1 citations52
US10067190B2Sep 4, 2018
Insulation diagnostic system or rotating machine
HITACHI LTD0 citations51
US9759774B2Sep 12, 2017
Anomaly diagnosis system, method, and apparatus
HITACHI LTD1 citations51
US11209487B2Dec 28, 2021
Rotor diagnostic apparatus, rotor diagnostic method, and rotor diagnostic program
HITACHI LTD0 citations48
US10209310B2Feb 19, 2019
Rotary machine diagnostic system
HITACHI LTD0 citations38
HITACHI CABLE
2 patentsHITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
2 patentsUS11193978B2Dec 7, 2021
Power conversion device, rotating machine system using same, and diagnosis method for same
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations62
US12061236B2Aug 13, 2024
Power conversion device, rotating machine system, and diagnosis method
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD0 citations61