Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588437 | Method for producing molten pig iron or steel pre-products in a melt-down gasifier | Werner Kepplinger | 1986-05-13 |
| 4448402 | Apparatus for directly making liquid pig-iron from coarse iron ore | Ralph Weber, Bernt Rollinger, Michael J. Nagle, Jr., Bernhard Rinner | 1984-05-15 |
| 4409023 | Process for directly making liquid pig-iron from coarse iron ore | Ralph Weber, Bernt Rollinger, Michael Nagl, Bernhard Rinner | 1983-10-11 |