Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4365789 | Apparatus for the direct reduction of iron in a shaft furnace using gas from coal | Charles W. Sanzenbacher | 1982-12-28 |
| 4331470 | Method for the direct reduction of iron in a shaft furnace using gas from coal | Charles W. Sanzenbacher | 1982-05-25 |
| 4316739 | Method for producing molten iron | Donald Beggs | 1982-02-23 |