Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8606440 | Method for determining correction under steering of a point on a towed object towards a goal position | — | 2013-12-10 |
| 4308116 | Method and electrolyzer for production of magnesium | Knut A. Andreassen, Oystein Boyum, Henry K. Johnsen, Leiv B. Ognedal | 1981-12-29 |
| 4301339 | Electrical bridge attached to high current switch | Oddmund Wallevik | 1981-11-17 |
| 4198282 | Replaceable cathode unit suitable as a module for building up of stable, non-deformable cathode systems in electrolyzers for the production of magnesium, and an electrolyzer with cathode units incorporated therein | Knut A. Andreassen, Henry K. Johnsen, Sigbjorn Kleveland | 1980-04-15 |