Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6773514 | Method for producing non-grain oriented electric sheet steel | Rudolf Kawalla, Hans Pircher, Karl Ernst Friedrich, Brigitte Hammer, Jürgen Schneider +1 more | 2004-08-10 |
| 6767412 | Method for producing non-grain-oriented magnetic steel sheet | Karl Ernst Friedrich, Brigitte Hammer, Rudolf Kawalla, Jürgen Schneider, Carl-Dieter Wuppermann | 2004-07-27 |