Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847064 | Economical process for alpha alumina production | — | 1989-07-11 |
| 4835124 | Alumina ceramic product from colloidal alumina | — | 1989-05-30 |
| 4797271 | Producing alumina granules in a fluidized bed | Hubert L. Fleming, Jon F. Edd, Chin-Liang Chou, Hisashi Kono, Ching-Chung Huang | 1989-01-10 |