Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4438515 | Protection of graphite electrodes | Dietger Dunkelmann, Helmut Jaunich | 1984-03-20 |
| 4435510 | Protection of graphite electrodes | Dennis Greensmith, Roderic H. Hammerton, Colin J. Wall, Dietger Dunkelmann, Helmut Jaunich | 1984-03-06 |
| 4301387 | Protection of carbon articles | Clive Graham Lorkin, Kenneth John Fletcher | 1981-11-17 |
| 4259128 | Coating carbon electrodes | Helmut Jaunich, Dieter Dunkelmann | 1981-03-31 |