Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5152837 | Building component containing coal ash | — | 1992-10-06 |
| 5002611 | Process for manufacturing a hardenable mixture containing coal ash process for manufacturing hardenend granules containing coal ash and building component containing coal ash | — | 1991-03-26 |
| 4880582 | Hardening granulated material at elevated temperatures | Jacobs J. Spanjer | 1989-11-14 |
| 4312841 | Enhanced hydrometallurgical recovery of cobalt and nickel from laterites | William K. Tolley | 1982-01-26 |