Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5091624 | Method of flash butt welding high-carbon material, in particular nodular cast iron | Peter Toelke, Ludwig Wilhelm, Urban Zimmermann | 1992-02-25 |
| 4900375 | Magnesium-treated, decarburizingly-annealed cast iron material | Guenter Schulte, Peter Toelke, Ludwig Wilhelm | 1990-02-13 |
| 4617069 | Method for improving the immunity to temperature changes of cast iron containing lamellar graphite | Klaus Hornung, Gunter Schulte, Fritz Mahnig | 1986-10-14 |