Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12215037 | Systems and methods for recovering salts, aluminum, alumina and ammonia from salt slag waste generated in aluminum recycling | — | 2025-02-04 |
| 11834343 | Systems and methods for recovering salts, aluminum, alumina and ammonia from salt slag waste generated in aluminum recycling | — | 2023-12-05 |
| 8517293 | Waterless separation systems for coal and minerals | David M. Avant, Jr. | 2013-08-27 |
| 8348184 | Waterless separation methods and systems for coal and minerals | David M. Avant, Jr. | 2013-01-08 |
| 8157193 | Waterless separation methods and systems for coal and minerals | David M. Avant, Jr. | 2012-04-17 |
| 6907994 | Process for converting wet fly ash into dry useful industrial products | William S. Bradley, Robert L. Carnahan, Frank A. Elk | 2005-06-21 |
| 6666335 | Multi-mineral/ash benefication process and apparatus | William M. Bradley, Robert L. Carnahan, Frank A. Elk, William Lewis, Robert M. Lewis | 2003-12-23 |