Inventor
MORITA AYUMU
JP47 patents
⚠️ This page may combine multiple inventors who share the name “MORITA AYUMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
33 patentsUS6940376B2Sep 6, 2005
Electromagnet and actuating mechanism for switch device, using thereof
HITACHI LTD15 citations92
US6816048B2Nov 9, 2004
Electromagnet and actuating mechanism for switch device, using thereof
HITACHI LTD34 citations92
US6153846ANov 28, 2000
Vacuum insulated switching apparatus
HITACHI LTD24 citations92
US6268579B1Jul 31, 2001
Vacuum switchgear
HITACHI LTD27 citations91
US6144005ANov 7, 2000
Vacuum switch and a vacuum switchgear using the same
HITACHI LTD30 citations91
US6498314B2Dec 24, 2002
Vacuum switch and vacuum switchgear using the same
HITACHI LTD24 citations88
US8035054B2Oct 11, 2011
Vacuum insulated switchgear
HITACHI LTD12 citations84
US8946581B2Feb 3, 2015
Switchgear
HITACHI LTD15 citations83
US7425687B2Sep 16, 2008
Vacuum insulated switchgear
HITACHI LTD12 citations83
US7911303B2Mar 22, 2011
Circuit breaker and opening and closing method thereof
HITACHI LTD13 citations80
US7902480B2Mar 8, 2011
Vacuum insulated switchgear
HITACHI LTD6 citations74
US7790998B2Sep 7, 2010
Vacuum insulated switchgear
HITACHI LTD5 citations74
US6107592AAug 22, 2000
Vacuum switching apparatus
HITACHI LTD10 citations74
US6529009B2Mar 4, 2003
Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof
HITACHI LTD12 citations73
US6426627B2Jul 30, 2002
Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof
HITACHI LTD10 citations73
US9899172B2Feb 20, 2018
Circuit breaker and circuit breaker operating method
HITACHI LTD2 citations72
US9520699B2Dec 13, 2016
Switchgear
HITACHI LTD3 citations72
US6495786B1Dec 17, 2002
Vacuum exhaust element of vacuum switch
HITACHI LTD7 citations72
US6259051B1Jul 10, 2001
Vacuum switch and a vacuum switchgear using the same
HITACHI LTD9 citations72
US6114647ASep 5, 2000
Bellows and vacuum switch using the bellows
HITACHI LTD9 citations72
US6005213ADec 21, 1999
Insulated type switchgear device
HITACHI LTD7 citations72
US5952636ASep 14, 1999
Vacuum type switch gear device having L shaped stationary and movable conductors arrangement
HITACHI LTD7 citations72
US7902479B2Mar 8, 2011
Vacuum switchgear
HITACHI LTD5 citations63
US7683286B2Mar 23, 2010
Switchgear
HITACHI LTD2 citations62
US7679023B2Mar 16, 2010
Switchgear
HITACHI LTD2 citations62
US7662208B2Feb 16, 2010
Electrical contacts for vacuum circuit breakers and methods of manufacturing the same
HITACHI LTD5 citations62
US8373082B2Feb 12, 2013
Vacuum insulated switchgear
HITACHI LTD0 citations52
US8049130B2Nov 1, 2011
Vacuum insulated switch and vacuum insulated switchgear
HITACHI LTD1 citations52
US9437380B2Sep 6, 2016
Switching unit or switching gear
HITACHI LTD0 citations51
US9142371B2Sep 22, 2015
Actuator for contactor
HITACHI LTD1 citations49
US9312669B2Apr 12, 2016
Resistor, method of assembling the same, and switchgear
HITACHI LTD0 citations48
US9378913B2Jun 28, 2016
Operating device or vacuum switch
HITACHI LTD0 citations46
US9318285B2Apr 19, 2016
Switchgear and opening and closing method thereof
HITACHI LTD0 citations42