Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5804056 | Process and apparatus for producing strip products from stainless steel | Franz G. Pempera, Michael Haentjes, Andreas Jaenichen, Rainer Kilb, Horst Edel | 1998-09-08 |
| 4714500 | Method for thermal treatment of pearlitic rail steels | Wilhelm Heller, Gerhard Ratz | 1987-12-22 |
| 4659398 | Method for reducing internal stresses of roller straightened rails | Wilhelm Heller, Lutz Weber, Reinhard Schweitzer | 1987-04-21 |