Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209901 | Agent for the treatment of cast iron melts | Karl J. Reifferscheid | 1993-05-11 |
| 4867227 | Process and apparatus for inoculating cast iron | Heiner Trager, Karl-Heinz Kleemann, Karl J. Reifferscheid | 1989-09-19 |