Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7963398 | Method for hydraulically separating carbon and classifying coal combustion ash | Thomas Robl | 2011-06-21 |
| 7328805 | Method and system for beneficiating gasification slag | Charles E. Price, William Lee Barnwell | 2008-02-12 |
| 6533848 | Technology and methodology for the production of high quality polymer filler and super-pozzolan from fly ash | Thomas Robl | 2003-03-18 |
| 5817230 | Method for improving the pozzolanic character of fly ash | Thomas Robl, Charles J. McCormick | 1998-10-06 |
| 5456363 | Method of removing carbon from fly ash | Steven Brooks | 1995-10-10 |
| 5116487 | Froth flotation method for recovery of ultra-fine constituent | Bhupendra K. Parekh | 1992-05-26 |