Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877418 | Briquette treatment process | Walter Harris, John Pringle | 1989-10-31 |
| 4787913 | Coal briquetting process | Walter Harris, Stephen G. Sawyer, Simon Kelly | 1988-11-29 |
| 4738685 | Coal briquetting process | Walter Harris, John Pringle | 1988-04-19 |
| 4643977 | Process for assessing coke micro-reactivity | Edmund P. Mills, Edward K. Harrison, Roy D. Nichols | 1987-02-17 |