Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744963 | Highly efficient calcination of gypsum to hemihydrate | Otto L. Dozsa, Richard F. Stone, Larbi Bounini | 1988-05-17 |
| 4397623 | Apparatus for the production of mineral fibers by means of rotating discs | William F. Porter | 1983-08-09 |