Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4470581 | Apparatus for selective reduction of metallic oxides | David C. Meissner, Charles W. Sanzenbacher, John C. Scarlett | 1984-09-11 |
| 4381939 | Method for selective reduction of metallic oxides | David C. Meissner, Charles W. Sanzenbacher, John C. Scarlett | 1983-05-03 |
| 4333761 | Method for direct reduction of iron using high sulfur gas | Donald Beggs | 1982-06-08 |
| 4270739 | Apparatus for direct reduction of iron using high sulfur gas | Donald Beggs | 1981-06-02 |