Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5246470 | Removal of sulfur from coal and pitch with dolomite | Lloyd Berg, John Berg | 1993-09-21 |
| 5125932 | Dissolution of coal with petroleum pitch | Lloyd Berg | 1992-06-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5246470 | Removal of sulfur from coal and pitch with dolomite | Lloyd Berg, John Berg | 1993-09-21 |
| 5125932 | Dissolution of coal with petroleum pitch | Lloyd Berg | 1992-06-30 |