Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7381384 | Insulating inserts for elevated temperature process vessels | Kevin S. Fraser, Patrick Henry Lauzon, Albert J. Koning | 2008-06-03 |
| 4786250 | Installation for evacuating emanations in the taphole region of shaft furnaces | Carlo M. P. Spedener | 1988-11-22 |
| 4768724 | Breaker plate for rock crusher | Guy A. Ehmann | 1988-09-06 |
| 4544143 | Taphole plugging apparatus for a shaft furnace | Pierre Mailliet | 1985-10-01 |