Inventor
Kouji Obata
Inventor
Hitachi, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Kprimary
H02KDynamo-electric machines29%
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%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters24%
H04NPictorial communication, e.g. television10%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for5%
G01RMeasuring electric variables5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
9,906,766'Imaging device'20189,131,199'Imaging apparatus capable of generating an appropriate color image'20158,816,694'Apparatus and method for detecting partial discharge at turn-to-turn insulation in motor'20147,663,337'Frequency converter, motor, motor drive system and maintenance method for motor drive system'20107,511,450'Frequency converter, motor, motor drive system and maintenance method for motor drive system'20097,408,323'Frequency converter, motor, motor drive system and maintenance method for motor drive system'20087,202,628'Frequency converter, motor, motor drive system and maintenance method for motor drive system'20077,112,940'Frequency converter, motor, motor drive system and maintenance method for motor drive system'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006–2014Patents assigned to HITACHI IND EQUIPMENT SYS (6)· patent assignee history
2006–2014Based in Hitachi, JP· patent location history
2014Patents assigned to FUKUSHI KEIJI (1)· patent assignee history
2014Patents assigned to OBATA KOUJI (1)· patent assignee history
2014Patents assigned to OBATA TAKESHI (1)· patent assignee history
2015–2018Patents assigned to CLARION CO LTD (2)· patent assignee history
2015–2018Based in Saitama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI IND EQUIPMENT SYS | 6 | 2006–2014 |
| CLARION CO LTD | 2 | 2015–2018 |
| FUKUSHI KEIJI | 1 | 2014 |
| OBATA KOUJIself | 1 | 2014 |
| OBATA TAKESHI | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 6 | 2006–2014 |
| Saitama, JP | 2 | 2015–2018 |