Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11427877 | Direct reduced iron (DRI) heat treatment, products formed therefrom, and use thereof | David W. Hendrickson | 2022-08-30 |
| 8535602 | System and method for producing metallic iron | Rodney L. Bleifuss, David J. Englund, Iwao Iwasaki, Donald R. Fosnacht, Mark M. Brandon | 2013-09-17 |
| 8177880 | System and method of producing metallic iron | David J. Englund, Rodney L. Bleifuss, Iwao Iwasaki, Donald R. Fosnacht, Mark M. Brandon | 2012-05-15 |
| 8133299 | Multiple hearth furnace for reducing iron oxide | Mark M. Brandon | 2012-03-13 |
| 8097065 | System and method for producing metallic iron | Rodney L. Bleifuss, David J. Englund, Iwao Iwasaki, Donald R. Fosnacht, Mark M. Brandon | 2012-01-17 |
| 5946339 | Steelmaking process using direct reduction iron | — | 1999-08-31 |
| 4728358 | Iron bearing briquet and method of making | Glenn E. Hoffman | 1988-03-01 |