Inventor
Naoki Maki
Inventor
Ibaraki, JP
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y02Eprimary
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
H01FMagnets10%
B60LPropulsion of electrically-propelled vehicles6%
H02HEmergency protective circuit arrangements6%
H02JElectric power networks6%
H02KDynamo-electric machines6%
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 systems4%
B01DSeparation2%
B63HMarine propulsion or steering2%
PatentTitleYear
10,461,645Power supply system, DC/DC converter, and power conditioner for suppressing performance degradation in solar cells20198,542,504'Control circuit, power conditioner including the control circuit, and photovoltaic system'20138,076,894'Superconductive rotating electric machine drive control system and superconductive rotating electric machine drive control method'20116,245,231'Fuel filter apparatus with anti-electrostatic function'20016,037,850'Superconducting magnet apparatus and method of regulating magnetization thereof'20005,812,042'Superconducting magnet formed by laminating hollow conductor plates'19985,598,710'Superconducting apparatus and method for operating said superconducting apparatus'19975,502,613'Superconducting magnet abnormality detection and protection apparatus'19965,222,437'Levitation system of a magnetically levitated train'19935,189,386'Aluminum-stabilized superconductor and superconducting coil, and method of manufacturing the superconductor'19935,107,524'Synchrotron radiation utilizing apparatus and method for utilizing synchrotron radiation'19924,996,496'Bending magnet'19914,448,042'Coolant supply and discharge device for superconductive rotor'19844,393,429'Superconductive coil system with protecting device'19834,389,585'Superconductive rotor'19834,171,494'Electric rotary machine having superconducting rotor'19793,960,090'Linear synchronous motor powered vehicle'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1998Patents assigned to HITACHI LTD (12)· patent assignee history
1976–2011Based in Ibaraki, JP· patent location history
1983–2000Based in Tokai, JP· patent location history
1993Patents assigned to HITACHI CABLE (1)· patent assignee history
2001Patents assigned to DENSO CORP (1)· patent assignee history
2001Based in Kariya, JP· patent location history
2011–2013Patents assigned to MAKI NAOKI (2)· patent assignee history
2013–2019Patents assigned to OMRON TATEISI ELECTRONICS CO (2)· patent assignee history
2013Based in Kyoto, JP· patent location history
2019Based in Ritto, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 12 | 1976–1998 |
| MAKI NAOKIself | 2 | 2011–2013 |
| OMRON TATEISI ELECTRONICS CO | 2 | 2013–2019 |
| DENSO CORP | 1 | 2001 |
| HITACHI CABLE | 1 | 1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaraki, JP | 8 | 1976–2011 |
| Tokai, JP | 4 | 1983–2000 |
| Ritto, JP | 1 | 2019 |
| Kyoto, JP | 1 | 2013 |
| Kariya, JP | 1 | 2001 |