Inventor
Ake Ekstrom
Inventor
Ludvika, SE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Jprimary
H02JElectric power networks38%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution38%
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 systems15%
H02HEmergency protective circuit arrangements8%
PatentTitleYear
5,187,651'System for discharging electrical power from a high-voltage direct current line to local network'19934,126,892'Selective voltage and current control for high voltage D.C. transmission systems'19784,024,454'Holding circuit for static convertor valves'19773,992,659'High voltage direct current transmission'19763,968,419'Direct current transmission and method of operating the same'19763,962,623'Direct current transmission with two parallel circuits'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1978Patents assigned to ASEA AB (5)· patent assignee history
1976–1993Based in Ludvika, SE· patent location history
1993Patents assigned to ASEA BROWN BOVERI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ASEA AB | 5 | 1976–1978 |
| ASEA BROWN BOVERI | 1 | 1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ludvika, SE | 6 | 1976–1993 |