Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428763 | Process for the production of iron carbide from iron oxide using external sources of carbon monoxide | Frank A. Stephens, Robert F. Hogsett, John P. Hager | 2002-08-06 |
| 6328946 | Two step process for the conversion of iron oxide into iron carbide using gas recycle | — | 2001-12-11 |
| 5869018 | Two step process for the production of iron carbide from iron oxide | — | 1999-02-09 |
| 5810906 | Method for preheating feed materials for the production of iron carbide | — | 1998-09-22 |
| 5804156 | Iron carbide process | Gordon H. Geiger, Arden W. Swanson, Frank A. Stephens | 1998-09-08 |
| 5733357 | Process for converting iron oxide to iron carbide employing internally generated carbon oxide as the carbiding agent | Frank A. Stephens, Robert F. Hogsett | 1998-03-31 |
| 5366897 | Method for controlling the conversion of iron-containing reactor feed into iron carbide | John P. Hager, Frank A. Stephens | 1994-11-22 |
| 5137566 | Process for preheating iron-containing reactor feed prior to being treated in a fluidized bed reactor | John P. Hager, Frank A. Stephens | 1992-08-11 |
| 5118479 | Process for using fluidized bed reactor | John P. Hager, Frank A. Stephens | 1992-06-02 |
| 5073194 | Process for controlling the product quality in the conversion of reactor feed into iron carbide | Frank A. Stephens, John P. Hager | 1991-12-17 |
| RE32247 | Process for the direct production of steel | — | 1986-09-16 |
| 4398945 | Process for producing a ferronickel alloy from nickel bearing laterites | — | 1983-08-16 |
| 4396423 | Process for recovering iron and zinc from steel making dusts | James C. Blair | 1983-08-02 |
| 4372755 | Production of a fuel gas with a stabilized metal carbide catalyst | Radon Tolman | 1983-02-08 |
| 4257781 | Process for enhancing the fuel value of low BTU gas | — | 1981-03-24 |