Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5795484 | Method and apparatus for dewatering | — | 1998-08-18 |
| 5413703 | Method and apparatus for dewatering | — | 1995-05-09 |
| 5236596 | Method and apparatus for dewatering | — | 1993-08-17 |
| 4662894 | Process for producing a coal-water mixture | — | 1987-05-05 |
| 4537599 | Process for removing sulfur and ash from coal | — | 1985-08-27 |
| 4521218 | Process for producing a coal-water mixture | — | 1985-06-04 |
| 4477220 | Method and apparatus for unloading burden from a tow comprised of barges | William P. O'Malley, Ross Rogers, Jr. | 1984-10-16 |
| 4323281 | Method of surface mining | Edward H. Greenwald, Jr., Frederick R. Bonci | 1982-04-06 |