Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7776191 | Cathhodes for aluminum electrolysis cell with non-planar slot configuration | Frank Hiltmann | 2010-08-17 |
| 5407290 | Connecting joint for electric furnace electrodes | Bernard Tahon | 1995-04-18 |