Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5264023 | Cored wire with a content of passivated pyrophoric metal, and the use thereof | Friedrich Wolfsgruber, Helmut Lischka | 1993-11-23 |
| 5087290 | Agent for the treatment of cast iron melts, process for the production thereof and the use thereof for treating cast iron melts | Friedrich Wolfsgruber, Wolfgang Geiger | 1992-02-11 |
| 4970051 | Process for the introduction of nitrogen into cast iron | Friedrich Wolfsgruber, Hartmut Meyer-Grunow, Jochem Richter, Julius Veit | 1990-11-13 |