Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8390298 | Method for determination of a setting value which indicates a ground impedance, and measurement device | Matthias Kereit | 2013-03-05 |
| 8271214 | Method for increasing the sensitivity of a differential protection system | — | 2012-09-18 |
| 6442493 | Method of detecting a fault in a monitored section of an electric transmission line using distance protection techniques | Andreas Jurisch | 2002-08-27 |
| 6329806 | Process for determining the harmonic oscillations of the fundamental component of an electrical signal | Thomas Reck | 2001-12-11 |
| 6308139 | Digital process for determining the effective value of a periodic electric test signal | Thomas Reck | 2001-10-23 |
| 6046895 | Distance protection method | Andreas Jurisch | 2000-04-04 |
| 5889398 | Process for determining the harmonic oscillations of the fundamental component of an electrical signal | Thomas Reck | 1999-03-30 |
| 5742156 | Digital process for obtaining a measured parameter from an electric signal | — | 1998-04-21 |
| 5471133 | Digital device for measuring the frequency of an electrical signal | — | 1995-11-28 |
| 5412386 | Arrangement for converting a plurality of electrical analog measurement signals that are applied simultaneously to its input terminals into a corresponding plurality of digital signals, using an antialiasing filter on the inputs | — | 1995-05-02 |