Inventor
Mitsuyuki Hombu
Inventor
Katsuta, JP
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Mprimary
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 systems24%
B60LPropulsion of electrically-propelled vehicles10%
B62DMotor vehicles10%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters10%
Y02TClimate change mitigation technologies related to transportation10%
B60WConjoint control of vehicle sub-units of different type or different function5%
G01RMeasuring electric variables5%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy5%
H03KPulse technique5%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution5%
PatentTitleYear
7,406,389'State detecting system and device employing the same'20087,085,661'State detecting system and device employing the same'20066,914,408'Motor control apparatus and electric vehicle using same'20056,696,812'Control apparatus for electric motor'20046,555,988'Motor control device'20036,414,867'Power inverter'20025,424,937'Gate drive power source for electric power converter'19955,298,848'Large capacity variable speed PWM spatial vector type sub-harmonic system for driving AC electric motor'19945,033,565'Motor-driven power steering apparatus'19914,960,178'Motor-driven power steering apparatus'19904,926,960'Electric power steering apparatus for vehicle'19904,926,306'Electric power converter'19904,875,539'Electric power steering control system'19894,870,556'Method and apparatus for controlling power converter'19894,757,436'Current-type converter protecting apparatus'19884,672,520'Current-source power converting apparatus with self-extinction devices'19874,599,685'Control circuit for power converter apparatus'19864,581,693'Apparatus for repeatedly applying short-circuit pulses to a current type inverter for output current control'19864,549,259'Gate control circuit for current-type inverter apparatus'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2008Patents assigned to HITACHI LTD (18)· patent assignee history
1985–1995Based in Katsuta, JP· patent location history
1989–1991Patents assigned to HITACHI AUTOMOTIVE ENG (4)· patent assignee history
2002–2008Based in Hitachinaka, JP· patent location history
2005Based in Tokyo, JP· patent location history
2006–2008Patents assigned to SHIN KOBE ELECTRIC MACHINERY (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 18 | 1985–2008 |
| HITACHI AUTOMOTIVE ENG | 4 | 1989–1991 |
| SHIN KOBE ELECTRIC MACHINERY | 2 | 2006–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Katsuta, JP | 13 | 1985–1995 |
| Hitachinaka, JP | 5 | 2002–2008 |
| Tokyo, JP | 1 | 2005 |