Inventor
Takao Yanai
Inventor
Hitachi, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B60Lprimary
B60LPropulsion of electrically-propelled vehicles20%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters20%
Y02TClimate change mitigation technologies related to transportation20%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles10%
G01RMeasuring electric variables10%
G06FElectric digital data processing10%
H04LTransmission of digital information, e.g. telegraphic communication10%
PatentTitleYear
8,355,226'Ground fault sensing device'20137,294,988'Synchronous motor drive unit and a driving method thereof'20077,271,557'AC motor driving apparatus and method of controlling the same'20074,742,484'Data transmission apparatus having two unidirectional transmission connection lines transmitting data from slave stations located downstream to a master station at high speed'19884,642,760'Status-change data gathering apparatus'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2007Patents assigned to HITACHI LTD (4)· patent assignee history
1987–2013Based in Hitachi, JP· patent location history
2007Based in Chiyoda-ku, JP· patent location history
2013Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (1)· patent assignee history
2013Patents assigned to YANAI TAKAO (1)· patent assignee history
2013Patents assigned to YOSHIDA TAKESHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 4 | 1987–2007 |
| HITACHI AUTOMOTIVE SYSTEMS LTD | 1 | 2013 |
| YANAI TAKAOself | 1 | 2013 |
| YOSHIDA TAKESHI | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 4 | 1987–2013 |
| Chiyoda-ku, JP | 1 | 2007 |