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Inventor

Mitsuhiko Watanabe

Inventor
Odawara, JP

Overview

31→
Patents
1995–2021
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.

F02Dprimary
F02DControlling combustion engines21%
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 systems10%
Y02TClimate change mitigation technologies related to transportation8%
H03KPulse technique7%
G11BInformation storage based on relative movement between record carrier and transducer6%
H04NPictorial communication, e.g. television6%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters4%
B60LPropulsion of electrically-propelled vehicles3%
F02PIgnition, other than compression ignition, for internal-combustion engines3%
G01RMeasuring electric variables3%
PatentTitleYear
11,042,134Power system status estimation device and status estimation method202110,787,193Drive control device and control method for electric motor202010,587,263Load drive apparatus202010,525,913Electronic control device202010,393,051Internal-combustion-engine fuel injection control device201910,197,037Control device20199,831,770Boost regulator with reduced inductor current noise20179,719,481'Control device'20178,776,763'Internal combustion engine controller'20148,649,151'Injector drive circuit'20148,599,530'Electromagnetic valve driving circuit'20138,561,594'Internal combustion engine controller'20138,548,641'Load drive circuit'20138,514,541'Injector drive circuit'20138,436,623'Electromagnetic load circuit failure diagnosis device'20138,188,712'Power supply controller and mechanical apparatus using the same'20128,144,447'Electromagnetic load controller'20128,081,498'Internal combustion engine controller'20118,045,311'Load driving and diagnosis system and control method'20117,987,044'Control device for internal combustion engine'20117,784,445'Control unit for internal combustion engine'20107,578,284'Internal combustion engine controller'20097,423,403'Motor control system'20087,146,265'Control device with time measuring function'20066,373,671'Apparatus with an over-current shutdown means and an over-temperature shutdown means'20026,347,182'Recording/reproducing apparatus including search reproducer controlled by tracking controller so that picture information of a selected type can be normally detected during search reproduction'20026,320,275'Power-feed control apparatus provided in a vehicle'20016,205,010'Switch circuit having protection function to interrupt input of control signal'20016,178,287'Magnetic recording and reproducing system including search reproduction circuit for reproducing an entire screen of one picture channel selected from a plurality of picture channels intermittently recorded on a magnetic tape'20015,625,504'Magnetic recording and reproducing system'19975,432,648'Magnetic recording and reproducing unit with selection of reproduced image signals'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2021Patents assigned to HITACHI LTD (18)· patent assignee history
1995–2002Based in Fujisawa, JP· patent location history
2001–2014Based in Odawara, JP· patent location history
2001–2020Based in Hitachinaka, JP· patent location history
2011–2014Patents assigned to WATANABE MITSUHIKO (10)· patent assignee history
2011–2014Patents assigned to MAYUZUMI TAKUYA (9)· patent assignee history
2011–2014Patents assigned to OURA RYOICHI (6)· patent assignee history
2013–2020Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (13)· patent assignee history
2013–2021Based in Tokyo, JP· patent location history
2017Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD181995–2021
HITACHI AUTOMOTIVE SYSTEMS LTD132013–2020
WATANABE MITSUHIKOself102011–2014
MAYUZUMI TAKUYA92011–2014
OURA RYOICHI62011–2014
Locations
LocationPatentsSpan
Odawara, JP172001–2014
Hitachinaka, JP72001–2020
Fujisawa, JP41995–2002
Tokyo, JP22013–2021
Ibaraki, JP12017