Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652739 | Process for deasphalting residua by reactive recycle of high boiling material | Willibald Serrand, Norman H. Sweed, Hans-Jurgen Weiss, Ingo Dreher, Udo Zentner +1 more | 2003-11-25 |