Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744974 | Process for production of alumina | Duane J. Lewis | 1988-05-17 |
| 4617183 | Production and recovery of alumina from vapor phase hydrolysis of aluminum trialkoxides | Duane J. Lewis | 1986-10-14 |