Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4957887 | Magnesite-carbon refractories | David J. Michael, David A. Kirk | 1990-09-18 |
| 4912068 | Magnesite-carbon refractories | David J. Michael, David A. Kirk | 1990-03-27 |
| 4803933 | Refractory brick having an increased insulating value | Loucius Carey, Jr. | 1989-02-14 |
| 4759533 | Heat-insulating boards | Peter T. Sutor | 1988-07-26 |