Inventor
Ryosuke Nakagawa
Inventor
Tokyo, JP
Overview
Patents· 8 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 systems20%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1015%
B01DSeparation10%
F23JRemoval or treatment of combustion products or combustion residues10%
H01LSemiconductor devices10%
H03KPulse technique10%
G01RMeasuring electric variables5%
H02HEmergency protective circuit arrangements5%
H05KPrinted circuits5%
H10DInorganic electric semiconductor devices5%
PatentTitleYear
10,778,001Overcurrent detection circuit and power converter20209,806,593'Drive circuit of power semiconductor device'20179,735,110'Semiconductor device and semiconductor device manufacturing method'20179,664,383'Denitrification apparatus'20179,467,067'Power converter'20169,313,933'Power converter performing evaporative cooling of a switching element'20168,125,084'Semiconductor device and semiconductor device manufacturing method'20127,722,844'Exhaust smoke denitrating apparatus and method of exhaust smoke denitration'2010Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2010Patents assigned to BABCOCK HITACHI KK (1)· patent assignee history
2010Based in Hiroshima, JP· patent location history
2012–2017Patents assigned to NAKAGAWA RYOSUKE (5)· patent assignee history
2012–2017Patents assigned to NAKAO YUICHI (2)· patent assignee history
2012–2017Patents assigned to ROHM CO LTD (2)· patent assignee history
2012–2017Based in Kyoto, JP· patent location history
2016–2020Patents assigned to MITSUBISHI ELECTRIC CORP (4)· patent assignee history
2016–2020Based in Tokyo, JP· patent location history
2016Based in Chiyoda-ku, JP· patent location history
2017Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NAKAGAWA RYOSUKEself | 5 | 2012–2017 |
| MITSUBISHI ELECTRIC CORP | 4 | 2016–2020 |
| NAKAO YUICHI | 2 | 2012–2017 |
| ROHM CO LTD | 2 | 2012–2017 |
| BABCOCK HITACHI KK | 1 | 2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 2016–2020 |
| Kyoto, JP | 2 | 2012–2017 |
| Kanagawa, JP | 1 | 2017 |
| Chiyoda-ku, JP | 1 | 2016 |
| Hiroshima, JP | 1 | 2010 |