Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5367426 | Distance relay with load encroachment protection, for use with power transmission lines | — | 1994-11-22 |
| 5365396 | Negative sequence directional element for a relay useful in protecting power transmission lines | Jeffrey B. Roberts | 1994-11-15 |
| 5349490 | Negative sequence directional element for a relay useful in protecting power transmission lines | Jeffrey B. Roberts | 1994-09-20 |
| 5325061 | Computationally-efficient distance relay for power transmission lines | — | 1994-06-28 |
| 5317472 | Apparatus for insuring the security of output signals from protective relays used in electric power systems | — | 1994-05-31 |