Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8197678 | Refining coal-derived liquid from coal gasification, coking and other coal processing operations | James S. Warwick | 2012-06-12 |
| 5242470 | Pelletizing coal or coke with starch particles | James A. Salter, Edward C. Sumner, IV | 1993-09-07 |