Inventor

Fumihiro Endo

Inventor

Hitachi, JP

Overview

31→

Patents

1982–2008

Patent span

Electricity

Primary field (CPC H)

Patents· 31 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G01Rprimary

G01RMeasuring electric variables24%

H02BBoards, substations or switching arrangements for the supply or distribution of electric power24%

H01HElectric switches22%

H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines12%

H02HEmergency protective circuit arrangements6%

G06NComputing arrangements based on specific computational models4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

G01KMeasuring temperature2%

G16HHealthcare informatics, i.e. information and communication technology [ict] specially adapted for the handling or processing of medical or healthcare data2%

H01BCables2%

PatentTitleYear

7,388,384'Method and system for monitoring partial discharge in gas-insulated apparatus'2008 7,256,584'Method and system for measuring partial discharge'2007 7,193,172'Gas-insulated switchgear tank'2007 7,064,267'Gas insulating apparatus and method for locating fault point thereof'2006 7,027,280'Gas insulating apparatus and method for locating fault point thereof'2006 6,853,528'Gas insulating apparatus and method for locating fault point thereof'2005 6,850,399'Gas insulated device and failure rating method'2005 6,759,616'Gas insulated switchgear'2004 6,680,453'Gas insulated switchgear'2004 6,483,316'Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing system for carrying out the same'2002 6,424,162'Insulated 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 signal'2002 6,300,768'Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing system for carrying out the same'2001 6,218,627'Bushing'2001 6,063,997'Gas insulated electric apparatus'2000 6,002,085'Gas insulated switchgear'1999 5,982,181'Insulated device diagnosing system for diagnosing device based upon partial discharge signal data analyzed by frequency'1999 5,798,484'Enclosed electric conductor arrangement'1998 5,728,989'Insulation gas filled circuit breaker'1998 5,689,088'Gas insulated device, gas insulated switchgear, gas insulated bus line, and cable direct-coupled gas insulated switchgear'1997 5,627,941'Method of configuring a neural network and a diagnosis/control system using the neural network'1997 5,598,509'Method of configuring a neural network and a diagnosis/recognition system using the same'1997 5,274,205'Gas blast, puffer type circuit breaker with improved nozzle'1993 5,256,976'Power 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 waves'1993 5,214,595'Abnormality diagnosing system and method for a high voltage power apparatus'1993 5,146,170'Method and apparatus for locating an abnormality in a gas-insulated electric device'1992 5,107,447'Abnormality diagnosing system and method for a high voltage power apparatus'1992 4,672,150'Conductor supporting apparatus for gas insulated equipment'1987 4,667,061'Gas insulated apparatus with internal coated insulation layer of high dielectric constant'1987 4,667,072'Gas-insulated circuit breaker'1987 4,564,721'Gas-insulated electrical apparatus with electret for captivating conductive particles and method of removing such particles during assembly thereof'1986 4,345,471'Temperature measurement apparatus'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2006Patents assigned to HITACHI LTD (28)· patent assignee history

1982Based in Ibaraki, JP· patent location history

1986–2007Based in Hitachi, JP· patent location history

2007–2008Patents assigned to JAPAN AE POWER SYSTEMS CORP (3)· patent assignee history

2008Based in Nagoya, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	28	1982–2006
JAPAN AE POWER SYSTEMS CORP	3	2007–2008

Locations

Location	Patents	Span
Hitachi, JP	29	1986–2007
Nagoya, JP	1	2008
Ibaraki, JP	1	1982