Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8823413 | Digital input with variable impedance | Hans Björklund, Tommy Segerbäck | 2014-09-02 |
| 8738331 | Increased reliability in the processing of digital signals | Hans Björklund | 2014-05-27 |
| 8532144 | Point-to-point communication in a high voltage power transmission system | Hans Björklund | 2013-09-10 |
| 8493866 | Redundant computers and computer communication networks in a high-voltage power transmission system | Hans Björklund | 2013-07-23 |
| 8305095 | Voltage measurements of electrically conducting elements in systems for controlling electrical processes | Hans Björklund | 2012-11-06 |
| 8305782 | Redundant current valve control in a high voltage power transmission system | Hans Björklund | 2012-11-06 |
| 6205039 | Device for supervising a high voltage converter station | Urban Astrom, Hans Björklund, Roland Siljeström, Gunnar Asplund | 2001-03-20 |
| 6185116 | HVDC power transmission system with cooling and switching device temperature detection | Urban Astrom, Roland Siljeström, Gunnar Asplund, Hans Björklund | 2001-02-06 |
| 6084787 | Device for supervising in a high voltage converter station | Roland Siljeström, Hans Björklund, Urban strom, Gunnar Asplund | 2000-07-04 |
| 5969956 | Method and a device for communication in a high voltage converter station | Hans Björklund, Gunnar Asplund, Roland Siljeström, Urban strom | 1999-10-19 |
| 5568042 | Monitoring and control of a filter in a power network | Urban stråm | 1996-10-22 |
| 5521526 | Method and a device for checking the condition of semiconductor valves | Ari Seppanen | 1996-05-28 |