Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4772317 | High alloy steel making | — | 1988-09-20 |
| 4539042 | Preventing an increase of the nitrogen content in molten steel | Hans Gruner, Arnold Pfeiffer, Rolf Vest | 1985-09-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4772317 | High alloy steel making | — | 1988-09-20 |
| 4539042 | Preventing an increase of the nitrogen content in molten steel | Hans Gruner, Arnold Pfeiffer, Rolf Vest | 1985-09-03 |