Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996694 | Method and apparatus for melting iron and steel scrap | Sven Santen | 1991-02-26 |
| 4686090 | Desulfurizing of reducing gas stream using a recycle calcium oxide system | John L. Howell, Joseph E. McGreal, Edward J. Nemeth, Stephen Waslo | 1987-08-11 |
| 4601752 | Method of manufacturing metals and/or generating slag | Sven Santen, Sune Eriksson | 1986-07-22 |
| 4321242 | Low sulfur content hot reducing gas production using calcium oxide desulfurization with water recycle | Joseph E. McGreal | 1982-03-23 |