Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8277720 | Device and method for heating a metal material | Ola Ritzén, Anders Lugnet, Mattias Ekblom | 2012-10-02 |
| 7625455 | Method of heat treatment of stainless steel | Tomas Ekman, Ola Ritzén | 2009-12-01 |
| 5783000 | Method for heat treatment of steel, and products of steel | Sten Ljungars, Lars Saltin, Sven-Eric Lunner, Sten-åke Brannvall | 1998-07-21 |
| 4834791 | Method for producing raw iron from iron concentrates for the manufacture of gas, and plant apparatus for carrying out the method | Mikael Brunner, Dan Kaufmann, Krister Torsell | 1989-05-30 |
| 4591381 | Process of producing pig iron from iron ore concentrate | Krister Torssell | 1986-05-27 |
| 4511372 | Carbon gasification method | — | 1985-04-16 |