Inventor
OBATA TAKESHI
JP24 patents
⚠️ This page may combine multiple inventors who share the name “OBATA TAKESHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI IND EQUIPMENT SYS
6 patentsUS7112940B2Sep 26, 2006
Frequency converter, motor, motor drive system and maintenance method for motor drive system
HITACHI IND EQUIPMENT SYS14 citations91
US7898138B2Mar 1, 2011
Rotary electric machine
HITACHI IND EQUIPMENT SYS4 citations59
US7663337B2Feb 16, 2010
Frequency converter, motor, motor drive system and maintenance method for motor drive system
HITACHI IND EQUIPMENT SYS0 citations51
US7511450B2Mar 31, 2009
Frequency converter, motor, motor drive system and maintenance method for motor drive system
HITACHI IND EQUIPMENT SYS0 citations51
US7408323B2Aug 5, 2008
Frequency converter, motor, motor drive system and maintenance method for motor drive system
HITACHI IND EQUIPMENT SYS0 citations51
US7202628B2Apr 10, 2007
Frequency converter, motor, motor drive system and maintenance method for motor drive system
HITACHI IND EQUIPMENT SYS0 citations51
FUJITSU LTD
5 patentsUS5954822ASep 21, 1999
Disk array apparatus that only calculates new parity after a predetermined number of write requests
FUJITSU LTD45 citations94
US5787460AJul 28, 1998
Disk array apparatus that only calculates new parity after a predetermined number of write requests
FUJITSU LTD86 citations93
US7752496B2Jul 6, 2010
Method, apparatus, and computer product for managing log data
FUJITSU LTD2 citations60
US7426658B2Sep 16, 2008
Data storage system and log data equalization control method for storage control apparatus
FUJITSU LTD3 citations60
US7487293B2Feb 3, 2009
Data storage system and log data output method upon abnormality of storage control apparatus
FUJITSU LTD0 citations39
NEC CORP
5 patentsUS5930077AJul 27, 1999
Magnetic head for recording and reproducing a signal and comprising a slider provided with a protective film including an intermediate layer and an amorphous hard carbon layer
NEC CORP28 citations92
US6387549B1May 14, 2002
Magnetic sensor
NEC CORP13 citations73
US7700211B2Apr 20, 2010
Fuel cell, fuel cell electrode and method for fabricating the same
NEC CORP4 citations61
US5681500AOct 28, 1997
Magnetic oxide having a large magnetoresistance effect at room temperature
NEC CORP2 citations61
US7655343B2Feb 2, 2010
Liquid fuel supply type fuel cell
NEC CORP0 citations52
HITACHI LTD
5 patentsUS7659651B2Feb 9, 2010
Rotating electric machine, winding machine, and rotating electric machine system
HITACHI LTD11 citations81
US5396757AMar 14, 1995
Directly motor-driven spindle assembly
HITACHI LTD13 citations74
US5099640AMar 31, 1992
Apparatus and method for control of a spinning machine
HITACHI LTD7 citations74
US4833873AMay 30, 1989
Spindle apparatus directly driven by electric motor
HITACHI LTD8 citations74
US4876847AOct 31, 1989
Ring Spinning machine
HITACHI LTD3 citations63