Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209901 | Agent for the treatment of cast iron melts | Dieter H. Gumbinger | 1993-05-11 |
| 5205856 | Inoculation wire | Bruno Prinz, Thomas Schulze | 1993-04-27 |
| 4874576 | Method of producing nodular cast iron | — | 1989-10-17 |
| 4867227 | Process and apparatus for inoculating cast iron | Heiner Trager, Karl-Heinz Kleemann, Dieter H. Gumbinger | 1989-09-19 |
| 4540436 | Treatment agent for cast iron melts and a process for the production thereof | Friedrich Wolfsgruber, Ernst A. Weiser, Werner Gmohling, Hans Kern | 1985-09-10 |
| 4412578 | Apparatus for treating molten cast iron | Ernst J. Doliwa, Friedrich Wolfsgruber | 1983-11-01 |