Inventor
Akira Nakazumi
Inventor
Hiroshima, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters25%
H02KDynamo-electric machines17%
B25JManipulators8%
E02FDredging8%
G05BControl or regulating systems in general8%
H02JElectric power networks8%
H04BTransmission8%
H04MTelephonic communication8%
Y02PClimate change mitigation technologies in the production or processing of goods8%
PatentTitleYear
9,973,053Electric motor having sealed casing and manufacturing method thereof20189,556,587'Hybrid device and hybrid construction machine including same'20179,287,808'Motor controller and construction machine provided therewith'20169,276,508'Inverter device for driving electric motor'20169,276,512'Motor controller and construction machine provided therewith'20169,000,630'Motor including heat radiating resin'20156,377,679'Speakerphone'20024,985,668'Robot controller'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2015Patents assigned to KOBE STEEL LTD (3)· patent assignee history
1991Based in Tokorozawa, JP· patent location history
2002Based in Osaka, JP· patent location history
2015–2018Patents assigned to KOBELCO CONSTR MACH CO LTD (6)· patent assignee history
2015–2018Based in Hiroshima, JP· patent location history
2016Patents assigned to SINFONIA TECHNOLOGY CO LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOBELCO CONSTR MACH CO LTD | 6 | 2015–2018 |
| KOBE STEEL LTD | 3 | 1991–2015 |
| SINFONIA TECHNOLOGY CO LTD | 3 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hiroshima, JP | 6 | 2015–2018 |
| Osaka, JP | 1 | 2002 |
| Tokorozawa, JP | 1 | 1991 |