Inventor
TOBISE MASAHIRO
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TOBISE MASAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6028779AFeb 22, 2000
Power inverter device
HITACHI LTD96 citations98
US4562390ADec 31, 1985
Insulation resistance measurement in static leonard apparatus
HITACHI LTD44 citations92
US5545957AAug 13, 1996
Motor speed controller for suppressing shaft torsion vibration
HITACHI LTD38 citations89
US5245257ASep 14, 1993
Control system
HITACHI LTD11 citations73
US4814678AMar 21, 1989
Speed control apparatus for motor
HITACHI LTD13 citations73
US5256944AOct 26, 1993
Motor speed control method and apparatus with drooping compensation independent of acceleration or deceleration current and time constant of motor
HITACHI LTD17 citations68
US4056767ANov 1, 1977
Cooling arrangement for semiconductor converter device
HITACHI LTD8 citations62
US6310456B1Oct 30, 2001
Control system and method
HITACHI LTD0 citations42
HITACHI METALS LTD
4 patentsUS6421519B1Jul 16, 2002
Magnet roll having an anisotropic bonded magnet portion containing rare earth-iron-nitrogen magnet powder
HITACHI METALS LTD22 citations92
US6413327B1Jul 2, 2002
Nitride type, rare earth magnet materials and bonded magnets formed therefrom
HITACHI METALS LTD27 citations91
US5748416AMay 5, 1998
Magnetoresistive playback head
HITACHI METALS LTD30 citations88
US6537463B2Mar 25, 2003
Resin-bonded magnet, its product, and ferrite magnet powder and compound used therefor
HITACHI METALS LTD11 citations73