Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4511839 | Method and a system for analyzing the secondary current in a current transformer, the primary side of which is connected into a line of an electric energy supply network | Paul Bulaty, Zdenek Franc, Giuseppe Salerno | 1985-04-16 |
| 4458285 | Method and device for finding faults on electric lines by the principle of low impedance | — | 1984-07-03 |
| 4426671 | Process and apparatus for the short-circuit protection of A.C. circuits | Pierre Braissant | 1984-01-17 |
| 4317151 | Apparatus for fault direction-comparison protection | Peter Muller | 1982-02-23 |
| 4308565 | Method and apparatus for fault direction determination | Peter Muller | 1981-12-29 |
| 4268886 | Distance protection apparatus for electrical lines | — | 1981-05-19 |
| 4249124 | Method and apparatus for monitoring faults by means of a polygonal trigger region | — | 1981-02-03 |
| 4237511 | Selective protection process for electrical lines and device for carrying out the process | — | 1980-12-02 |
| 4230982 | Process and device for short-circuit monitoring of electrical lines | — | 1980-10-28 |
| 4222085 | Method and apparatus for the distance-selective fault monitoring of electrical lines | — | 1980-09-09 |