Inventor · disambiguated record
Fumihiro Endo
Also filed as: ENDO FUMIHIRO
31 granted patents·4 pending applications·677 citations·filing 1980–2006
98Inventor score
Top patents by PatentIndex Score
35 records- 0192US5107447AAbnormality diagnosing system and method for a high voltage power apparatusHITACHI LTD·Filed 1989·Granted Apr 21, 1992·88 cites·24 claims
- 0290US7388384B2Method and system for monitoring partial discharge in gas-insulated apparatusJAPAN AE POWER SYSTEMS CORP·Filed 2005·Granted Jun 17, 2008·23 cites·9 claims
- 0390US5214595AAbnormality diagnosing system and method for a high voltage power apparatusHITACHI LTD·Filed 1991·Granted May 25, 1993·91 cites·5 claims
- 0485US6680453B2Gas insulated switchgearHITACHI LTD·Filed 2001·Granted Jan 20, 2004·26 cites·16 claims
- 0585US6483316B2Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing system for carrying out the sameHITACHI LTD·Filed 2001·Granted Nov 19, 2002·26 cites·21 claims
- 0680US6850399B1Gas insulated device and failure rating methodHITACHI LTD·Filed 2000·Granted Feb 1, 2005·24 cites·16 claims
- 0779US7064267B2Gas insulating apparatus and method for locating fault point thereofHITACHI LTD·Filed 2005·Granted Jun 20, 2006·8 cites·4 claims
- 0877US6759616B2Gas insulated switchgearHITACHI LTD·Filed 2003·Granted Jul 6, 2004·22 cites·3 claims
- 0976US5598509AMethod of configuring a neural network and a diagnosis/recognition system using the sameHITACHI LTD·Filed 1994·Granted Jan 28, 1997·38 cites·18 claims
- 1075US7193172B2Gas-insulated switchgear tankJAPAN AE POWER SYSTEMS CORP·Filed 2004·Granted Mar 20, 2007·22 cites·15 claims
- 1175US5146170AMethod and apparatus for locating an abnormality in a gas-insulated electric deviceHITACHI LTD·Filed 1990·Granted Sep 8, 1992·42 cites·16 claims
- 1274US6300768B1Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing system for carrying out the sameHITACHI LTD·Filed 2000·Granted Oct 9, 2001·18 cites·1 claims
- 1374US5982181AInsulated device diagnosing system for diagnosing device based upon partial discharge signal data analyzed by frequencyHITACHI LTD·Filed 1997·Granted Nov 9, 1999·29 cites·10 claims
- 1471US7256584B2Method and system for measuring partial dischargeJAPAN AE POWER SYSTEMS CORP·Filed 2005·Granted Aug 14, 2007·5 cites·10 claims
- 1571US6218627B1BushingHITACHI LTD·Filed 1999·Granted Apr 17, 2001·31 cites·13 claims
- 1668US6002085AGas insulated switchgearHITACHI LTD·Filed 1994·Granted Dec 14, 1999·31 cites·9 claims
- 1767US6424162B1Insulated device diagnosing system that prepares detection data from partial discharge signal such that periodic elements are given to different specific frequencies of the partial discharge signalHITACHI LTD·Filed 1999·Granted Jul 23, 2002·22 cites·5 claims
- 1865US5256976APower apparatus and method of location of a fault in a power apparatus on the basis of attenuation coefficients of electromagnetic coefficients of fault generated electromagnetic wavesHITACHI LTD·Filed 1991·Granted Oct 26, 1993·25 cites·32 claims
- 1960US5627941AMethod of configuring a neural network and a diagnosis/control system using the neural networkHITACHI LTD·Filed 1993·Granted May 6, 1997·19 cites·23 claims
- 2055US6853528B2Gas insulating apparatus and method for locating fault point thereofHITACHI LTD·Filed 2003·Granted Feb 8, 2005·6 cites·5 claims
- 2154US4564721AGas-insulated electrical apparatus with electret for captivating conductive particles and method of removing such particles during assembly thereofHITACHI LTD·Filed 1985·Granted Jan 14, 1986·16 cites·15 claims
- 2249US7027280B2Gas insulating apparatus and method for locating fault point thereofHITACHI LTD·Filed 2005·Granted Apr 11, 2006·2 cites·2 claims
- 2349US6063997AGas insulated electric apparatusHITACHI LTD·Filed 1994·Granted May 16, 2000·14 cites·18 claims
- 2447US5798484AEnclosed electric conductor arrangementHITACHI LTD·Filed 1994·Granted Aug 25, 1998·17 cites·2 claims
- 2544US4667061AGas insulated apparatus with internal coated insulation layer of high dielectric constantHITACHI LTD·Filed 1985·Granted May 19, 1987·10 cites·5 claims
- 2644US2006186091A1Gas-insulated switchgear tankJAPAN AE POWER SYSTEMS CORP·Filed 2006·Application pending·0 cites
- 2742US2006164100A1Method and system for measuring partial dischargeJAPAN AE POWER SYSTEMS CORP·Filed 2006·Application pending·0 cites
- 2841US5728989AInsulation gas filled circuit breakerHITACHI LTD·Filed 1995·Granted Mar 17, 1998·7 cites·15 claims
- 2940US2005184737A1Method and system for measuring partial dischargeFiled 2005·Application pending·0 cites
- 3037US4667072AGas-insulated circuit breakerHITACHI LTD·Filed 1984·Granted May 19, 1987·3 cites·9 claims
- 3137US2002163344A1Insulated device diagnosing system and partial discharge detecting methodHITACHI LTD·Filed 2002·Application pending·0 cites
- 3234US5689088AGas insulated device, gas insulated switchgear, gas insulated bus line, and cable direct-coupled gas insulated switchgearHITACHI LTD·Filed 1995·Granted Nov 18, 1997·7 cites·12 claims
- 3331US5274205AGas blast, puffer type circuit breaker with improved nozzleHITACHI LTD·Filed 1993·Granted Dec 28, 1993·2 cites·6 claims
- 3431US4672150AConductor supporting apparatus for gas insulated equipmentHITACHI LTD·Filed 1986·Granted Jun 9, 1987·1 cites·8 claims
- 3530US4345471ATemperature measurement apparatusHITACHI LTD·Filed 1980·Granted Aug 24, 1982·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →