Inventor
KOHARAGI HARUO
JP34 patents
⚠️ This page may combine multiple inventors who share the name “KOHARAGI HARUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
27 patentsUS6917133B2Jul 12, 2005
Air conditioner having permanent magnet rotating electric machine
HITACHI LTD82 citations97
US6525442B2Feb 25, 2003
Permanent magnet rotating electric machine
HITACHI LTD120 citations97
US5243732ASep 14, 1993
Vacuum cleaner with fuzzy logic control
HITACHI LTD142 citations97
US4880474ANov 14, 1989
Method and apparatus for operating vacuum cleaner
HITACHI LTD125 citations96
US6838798B2Jan 4, 2005
Permanent magnet type rotating electric machine
HITACHI LTD16 citations92
US6657350B2Dec 2, 2003
Permanent magnet type rotating electrical machine, and power generation system and drive system using it
HITACHI LTD19 citations92
US6552461B2Apr 22, 2003
Permanent magnet type rotating electric machine
HITACHI LTD18 citations92
US6462451B1Oct 8, 2002
Permanent magnet rotating electric machine
HITACHI LTD25 citations92
US6441525B1Aug 27, 2002
Permanent magnet rotating electric machine
HITACHI LTD43 citations92
US6441523B1Aug 27, 2002
Very high permanent magnet type electric rotating machine system
HITACHI LTD24 citations92
US6376958B1Apr 23, 2002
Permanent magnet type synchronous motor and air compressor
HITACHI LTD25 citations92
US6369478B1Apr 9, 2002
Permanent-magnet-type electric rotating machine and air compressor and generator using the same
HITACHI LTD24 citations92
US5469009ANov 21, 1995
Turbine generator
HITACHI LTD32 citations92
US5294872AMar 15, 1994
Method and apparatus for operating vacuum cleaner
HITACHI LTD25 citations92
US5166585ANov 24, 1992
Motor control apparatus for an electric vacuum cleaner
HITACHI LTD28 citations92
US4983895AJan 8, 1991
Method and apparatus for operating vacuum cleaner
HITACHI LTD25 citations92
US4958406ASep 25, 1990
Method and apparatus for operating vacuum cleaner
HITACHI LTD41 citations92
US5381584AJan 17, 1995
Vacuum cleaner
HITACHI LTD27 citations91
US8358040B2Jan 22, 2013
Permanent magnet type electric rotating machine
HITACHI LTD16 citations84
US5015905AMay 14, 1991
DC dynamoelectric machine with interpoles having magnetic flux bypassing members
HITACHI LTD21 citations80
US4451752AMay 29, 1984
Stator of D.C. rotary machine
HITACHI LTD18 citations74
US6759776B2Jul 6, 2004
Permanent magnet type electric rotating machine
HITACHI LTD12 citations73
US6759777B2Jul 6, 2004
Permanent magnet type electric rotating machine
HITACHI LTD9 citations73
US5075607ADec 24, 1991
Method and apparatus for operating vacuum cleaner
HITACHI LTD10 citations73
US4454460AJun 12, 1984
D.C. Rotary machine with interpole compensation
HITACHI LTD10 citations73
US4467234AAug 21, 1984
Armature of rotating machine with means to balance the mutual inductance of adjacent pairs of coils
HITACHI LTD10 citations72
US5155885AOct 20, 1992
Vacuum cleaner and method for operating the same
HITACHI LTD12 citations70
HITACHI APPLIANCES INC
5 patentsUS7772736B2Aug 10, 2010
Permanent magnet synchronous motor, rotor of the same, and compressor using the same
HITACHI APPLIANCES INC9 citations83
US7442017B2Oct 28, 2008
Displacement type compressor having a self-start synchronous motor and start load reducing means
HITACHI APPLIANCES INC10 citations83
US7531934B2May 12, 2009
Self-start synchronous motor with permanent magnets and at least one frictional agitation joint, method for manufacturing the same and compressor comprising the same
HITACHI APPLIANCES INC18 citations80
US7453181B2Nov 18, 2008
Permanent magnet synchronous motor and compressor using the same
HITACHI APPLIANCES INC7 citations73
US7501734B2Mar 10, 2009
Motor, compressor, and air conditioner
HITACHI APPLIANCES INC3 citations62