Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6288361 | Method and device for joining flat products to be connected such that they overlap | Hans Pircher, Rudolf Kawalla, Thomas Stegemann-Auhage, Ralf Polzin | 2001-09-11 |
| 5458704 | Process for the production of thick armour plates | Jochen Bobbert, Rudolf Kawalla, Hans Pircher, Gunter Weihrauch | 1995-10-17 |
| 4994118 | Process for the production of hot rolled steel or heavy plates | Hans Pircher, Rudolf Kawalla, Jurgen Mahn, Walter Wilms, Waldemar Wolpert | 1991-02-19 |
| 4917969 | Process for the production of clad hot rolled strip and the resulting product | Hans Pircher, Rudolf Kawalla, Walter Wilms, Waldemar Wolpert | 1990-04-17 |