Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797139 | Boehmite produced by a seeded hydyothermal process and ceramic bodies produced therefrom | — | 1989-01-10 |
| 4797269 | Production of beta alumina by seeding and beta alumina produced thereby | Rufus M. Franklin | 1989-01-10 |