Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744963 | Highly efficient calcination of gypsum to hemihydrate | Donald R. Janninck, Richard F. Stone, Larbi Bounini | 1988-05-17 |
| 4681644 | Accelerator for gypsum plaster and process of manufacture | — | 1987-07-21 |