Inventor
Haruo Nagase
Inventor
Kitakatsuragi-gun, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating33%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications25%
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 systems17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
H01RElectrically-conductive connections4%
H02JElectric power networks4%
PatentTitleYear
8,362,639'Light emitting diode drive device, illumination device, in-vehicle cabin illumination device, and vehicle illumination device'20138,274,237'LED driver circuit with over-current protection during a short circuit condition'20126,294,879'Ballast for a discharge lamp'20015,823,806'Lamp socket'19985,671,128'Power supply apparatus'19975,384,518'Power source device'19955,063,490'Regulated chopper and inverter with shared switches'19914,912,374'Discharge lamp driving circuit'19904,734,624'Discharge lamp driving circuit'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2001Patents assigned to MATSUSHITA ELECTRIC WORKS LTD (7)· patent assignee history
1988Based in Yawata, JP· patent location history
1990–2012Based in Nara, JP· patent location history
1995–1997Based in Kadoma, JP· patent location history
1998–2013Based in Kitakatsuragi-gun, JP· patent location history
2012–2013Patents assigned to NAGASE HARUO (2)· patent assignee history
2012–2013Patents assigned to PANASONIC CORP (2)· patent assignee history
2012Patents assigned to KAMBARA TAKASHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MATSUSHITA ELECTRIC WORKS LTD | 7 | 1988–2001 |
| NAGASE HARUOself | 2 | 2012–2013 |
| PANASONIC CORP | 2 | 2012–2013 |
| KAMBARA TAKASHI | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kitakatsuragi-gun, JP | 3 | 1998–2013 |
| Nara, JP | 3 | 1990–2012 |
| Kadoma, JP | 2 | 1995–1997 |
| Yawata, JP | 1 | 1988 |