Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5944861 | Process and apparatus for making expanded slag | Peter A. MacKenzie | 1999-08-31 |
| 5082483 | Enclosures for slag pelletization apparatus and method of operation thereof | Kenneth W. Spencer | 1992-01-21 |
| 4995894 | Enclosures for slag pelletization apparatus and method of operation | Kenneth W. Spencer, Peter A. MacKenzie | 1991-02-26 |