Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11574776 | Pressure pulse diagnostics of an on-load tap changer | Lars Jonsson | 2023-02-07 |
| 10742019 | Monitoring tap changer switching | — | 2020-08-11 |
| 9128477 | Bushing diagnosis | — | 2015-09-08 |
| 9026374 | Method and device for determining the relative humidity of an insulating liquid filled electric apparatus | Gunnar Andersson | 2015-05-05 |
| 7444266 | Control system for a transformer or reactor | Gunnar Andersson | 2008-10-28 |
| 7145760 | Tap changer monitoring | Gunnar Andersson | 2006-12-05 |
| 7089145 | Tap changer condition diagnosing | Gunnar Andersson | 2006-08-08 |
| 6962435 | Condition diagnosing | — | 2005-11-08 |
| 5198622 | Condenser body for the field control of the connection of a transformer bushing | Asa Hammarsten, Lennart Strandberg | 1993-03-30 |