Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5192338 | Coal ash modification and reduction | Allan B. Waugh | 1993-03-09 |
| 4936045 | Demineralization of coal | Allan B. Waugh | 1990-06-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5192338 | Coal ash modification and reduction | Allan B. Waugh | 1993-03-09 |
| 4936045 | Demineralization of coal | Allan B. Waugh | 1990-06-26 |