Inventor
Koichi Yahata
Inventor
Hitachinaka, JP
Overview
Patents· 13 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 systems28%
B60LPropulsion of electrically-propelled vehicles13%
Y02TClimate change mitigation technologies related to transportation13%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters10%
H05KPrinted circuits10%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1010%
G01RMeasuring electric variables5%
H02HEmergency protective circuit arrangements3%
H02JElectric power networks3%
H03KPulse technique3%
PatentTitleYear
10,840,800Power conversion device20209,964,579Voltage detection apparatus20189,065,443'Inverter drive device'20158,970,155'Power inverter'20158,971,079'Inverter device'20158,791,681'Electric power conversion system'20148,471,507'Electric power conversion system and electric power conversion device'20138,228,700'Power conversion device'20128,040,088'Power inverter'20117,859,105'Power converter, power system provided with same, and mobile body'20107,719,838'Power inverter'20107,561,448'Power inverter'20097,561,429'Power converter unit'2009Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009–2011Patents assigned to HITACHI LTD (5)· patent assignee history
2009–2020Based in Hitachinaka, JP· patent location history
2012–2020Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (8)· patent assignee history
2012–2015Patents assigned to YAHATA KOICHI (6)· patent assignee history
2012–2015Patents assigned to AKAISHI YOSHIO (4)· patent assignee history
2013–2015Patents assigned to NOTO YASUO (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI AUTOMOTIVE SYSTEMS LTD | 8 | 2012–2020 |
| YAHATA KOICHIself | 6 | 2012–2015 |
| HITACHI LTD | 5 | 2009–2011 |
| NOTO YASUO | 5 | 2013–2015 |
| AKAISHI YOSHIO | 4 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachinaka, JP | 13 | 2009–2020 |