Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6469075 | Method and preparation of stable bitumen polymer compositions | James R. Butler, Karen Scheel | 2002-10-22 |
| 6469223 | Selective hydrogenation of dienes | James R. Butler | 2002-10-22 |
| 6462247 | Toluene disproportionation process | James R. Butler | 2002-10-08 |
| 6441065 | Method for preparation of stable bitumen polymer compositions | Cyril Chevillard, Paul Buras, James R. Butler | 2002-08-27 |
| 6407152 | Method for preparing asphalt and polymer compositions incorporating multi-component crosslinking agents | James R. Butler | 2002-06-18 |