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Inventor

Tsunehiro Endo

Inventor
Hitachiota, JP

Overview

49→
Patents
1982–2011
Patent span
Electricity
Primary field (CPC H)

Patents· 49 as inventor

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

H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters42%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
A47LDomestic washing or cleaning7%
H03KPulse technique3%
B60LPropulsion of electrically-propelled vehicles2%
G05DSystems for controlling or regulating non-electric variables2%
H02KDynamo-electric machines2%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications2%
Y02TClimate change mitigation technologies related to transportation2%
PatentTitleYear
8,035,330'Apparatus and method for driving synchronous motor'20117,944,720'Semiconductor integrated circuit, PWM signal output device, and power conversion control apparatus'20117,839,663'Converter and power converter that becomes it with the converter'20107,839,113'Apparatus and method for driving synchronous motor'20107,821,223'Vector controller for a permanent magnet motor and inverter module'20107,619,385'Motor controller, washing machine, air conditioner and electric oil pump'20097,602,138'Driving apparatus and driving system for electric motor'20097,528,568'Vector controller for permanent magnet synchronous motor'20097,521,887'Vector controller for a permanent magnet synchronous motor, inverter module, and permanent magnet synchronous motor constant display system'20097,471,525'Converter and power converter that becomes it with the converter'20087,443,120'Field weakening vector controller for permanent magnet synchronous motor and control module'20087,388,341'Control system for permanent magnet synchronous motor and module'20087,342,378'System and method for driving synchronous motor'20087,332,882'Motor drive device that combined charge controller'20087,276,876'Synchronous motor driving apparatus'20077,199,547'Apparatus, method or system for controlling mobile body'20077,148,651'Apparatus and method for controlling AC motor and module therefor'20067,064,514'Motor drive system for AC motors'20067,030,589'Driving systems of AC motor'20066,954,050'Control method and control device of permanent-magnet type synchronous motor'20056,938,713'Dynamotor of hybrid vehicle, and method of control thereof'20056,690,137'Sensorless control system for synchronous motor'20046,657,413'Driving equipment for synchronous motors'20036,650,081'Synchronous motor driving system'20036,642,681'Starting control method of and control apparatus for synchronous motor, and air conditioner, refrigerator, washing machine and vacuum cleaner each provided with the control apparatus'20036,639,377'Driving device for synchronous motor'20036,628,099'Synchronous motor driving system and sensorless control method for a synchronous motor'20036,570,358'Control apparatus for alternating-current motor'20036,531,843'Driving system of AC motor'20036,111,333'Magnetic bearing, rotating machine mounting the same, and method for driving rotating machine'20006,058,036'Inverter apparatus having operation specifications determined by type of I/O block which is connected to basic control unit'20005,949,663'Inverter apparatus capable of readily modification of the specification and performance thereof'19995,940,272'Electric apparatus having heat radiating fin'19995,574,352'Frequency control method for inverter and apparatus therefor'19965,475,293'Method for measuring characteristic constants of alternating current motor and controller thereof based on said method'19955,359,278'Zero current switching circuit and converting apparatus using the same'19945,351,182'Level shift circuit and inverter apparatus using the same'19945,300,872'Method and apparatus for control of inverter'19945,294,872'Method and apparatus for operating vacuum cleaner'19945,243,732'Vacuum cleaner with fuzzy logic control'19935,166,585'Motor control apparatus for an electric vacuum cleaner'19925,075,607'Method and apparatus for operating vacuum cleaner'19915,050,057'Power source apparatus'19914,992,715'Torque control apparatus for rotating motor machine'19914,983,895'Method and apparatus for operating vacuum cleaner'19914,977,508'Internal combustion engine equipped with a torque controller'19904,880,474'Method and apparatus for operating vacuum cleaner'19894,736,143'Torque control apparatus for rotary machine'19884,340,931'Power supply system'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2011Patents assigned to HITACHI LTD (40)· patent assignee history
1982–2011Based in Hitachiota, JP· patent location history
1991–1995Based in Hitachioota, JP· patent location history
1994–2000Based in Narashino, JP· patent location history
2004Based in Tokyo, JP· patent location history
2005–2009Patents assigned to HITACHI IND EQUIPMENT SYS (5)· patent assignee history
2005–2010Patents assigned to HITACHI CAR ENG CO LTD (3)· patent assignee history
2007Based in Hitachi, JP· patent location history
2008–2010Patents assigned to HITACHI APPLIANCES INC (2)· patent assignee history
2010–2011Patents assigned to HITACHI INF & CONTROL SYST (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD401982–2011
HITACHI IND EQUIPMENT SYS52005–2009
HITACHI CAR ENG CO LTD32005–2010
HITACHI APPLIANCES INC22008–2010
HITACHI INF & CONTROL SYST22010–2011
Locations
LocationPatentsSpan
Hitachiota, JP391982–2011
Narashino, JP51994–2000
Hitachioota, JP21991–1995
Hitachi, JP12007
Tokyo, JP12004