Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6137021 | Conversion of an HF alkylation unit | Dennis E. O'Brien | 2000-10-24 |
| 6069285 | Alkylaromatic process using a solid alkylation catalyst and a benzene rectifier | Thomas R. Fritsch, Dennis E. O'Brien | 2000-05-30 |
| 5983476 | Conversion of an HF alkylation unit | Dennis E. O'Brien | 1999-11-16 |