Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8728385 | Sidewall and bottom electrode arrangement for electrical smelting reactors and method for feeding such electrodes | Harald Haaland, Jon Brinch, Jarle Erland Herstad, Constantin Jorgensen | 2014-05-20 |
| 7169207 | Device and method for treatment of gases | Jon Brinch | 2007-01-30 |
| 6702994 | Method and apparatus for production of amorphous silica from silicon and silicon containing materials | Knut Henriksen | 2004-03-09 |
| 6635198 | Method for producing elongated carbon bodies | Arnfinn Vatland | 2003-10-21 |
| 4678434 | Baking furnace for electrodes | Erik Dahl, Arnfinn Vatland | 1987-07-07 |
| 4663844 | Device for cutting an electrode casing | — | 1987-05-12 |