Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428763 | Process for the production of iron carbide from iron oxide using external sources of carbon monoxide | Frank M. Stephens, Jr., Robert F. Hogsett, John P. Hager | 2002-08-06 |
| 5804156 | Iron carbide process | Gordon H. Geiger, Arden W. Swanson, Frank M. Stephens, Jr. | 1998-09-08 |
| 5733357 | Process for converting iron oxide to iron carbide employing internally generated carbon oxide as the carbiding agent | Frank M. Stephens, Jr., Robert F. Hogsett | 1998-03-31 |
| 5366897 | Method for controlling the conversion of iron-containing reactor feed into iron carbide | John P. Hager, Frank M. Stephens, Jr. | 1994-11-22 |
| 5137566 | Process for preheating iron-containing reactor feed prior to being treated in a fluidized bed reactor | Frank M. Stephens, Jr., John P. Hager | 1992-08-11 |
| 5118479 | Process for using fluidized bed reactor | Frank M. Stephens, Jr., John P. Hager | 1992-06-02 |
| 5073194 | Process for controlling the product quality in the conversion of reactor feed into iron carbide | John P. Hager, Frank M. Stephens, Jr. | 1991-12-17 |
| 4200455 | Hydrometallurgical recovery of metal values | James A. Bradbury, John C. Stauter, Richard T. Um, Yoon T. Auck | 1980-04-29 |