Inventor
Kyozo Tachibana
Inventor
Naka, JP
Overview
Patents· 9 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 systems44%
B60LPropulsion of electrically-propelled vehicles13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
B25JManipulators6%
G05BControl or regulating systems in general6%
H02JElectric power networks6%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution6%
Y02TClimate change mitigation technologies related to transportation6%
PatentTitleYear
4,788,482'Position correcting control system for servomechanism device'19884,306,283'Power factor improving apparatus for power converter'19814,245,291'Electric power converter apparatus for an a.c. electric rolling stock'19814,144,559'Power converter control system'19794,136,305'Power converter control apparatus'19794,122,515'High harmonic current reducing apparatus in power converter'19784,045,722'Power converter system'19774,021,721'AC-to-DC converter'19774,020,411'Static power converter controlling apparatus for reducing noise generated by phase shift control'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1988Patents assigned to HITACHI LTD (9)· patent assignee history
1977–1979Based in Naka, JP· patent location history
1978–1979Based in Ibaraki, JP· patent location history
1981–1988Based in Yokohama, JP· patent location history
1981Based in Kamikashiomachi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 9 | 1977–1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Naka, JP | 4 | 1977–1979 |
| Yokohama, JP | 2 | 1981–1988 |
| Ibaraki, JP | 2 | 1978–1979 |
| Kamikashiomachi, JP | 1 | 1981 |