Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7033486 | Residuum conversion process | Martin L. Gorbaty, Michael Siskin | 2006-04-25 |
| 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 |
| 6352638 | Two-stage process for converting residua to gasoline blendstocks and light olefins | Willibald Serrand | 2002-03-05 |
| 6179993 | Process for obtaining olefins from residual feedstocks | Noel M. Seimandi, Tony T. Cheng, Willibald Serrand, Paul K. Ladwig, John F. Pagel +2 more | 2001-01-30 |
| 5952539 | Dual process for obtaining olefins | Noel M. Seimandi, Tony T. Cheng, Willibald Serrand, Paul K. Ladwig, John F. Pagel +2 more | 1999-09-14 |
| 5919352 | Integrated residua upgrading and fluid catalytic cracking | Willibald Serrand, David G. Hammond, John F. Pagel, Martin C. Poole | 1999-07-06 |
| 5879536 | Two-stage process for obtaining significant olefin yields from residua feedstocks | Willibald Serrand | 1999-03-09 |
| 5879535 | Two-stage process for obtaining significant olefin yields from residua feedstocks | Willibald Serrand, Michael R. Parrish, David G. Hammond | 1999-03-09 |
| 5714056 | Process for deasphalting residua (HEN9511) | David G. Hammond, John F. Pagel, Martin C. Poole, Willibald Serrand | 1998-02-03 |
| 5714663 | Process for obtaining significant olefin yields from residua feedstocks | Willibald Serrand, Paul K. Ladwig, John F. Pagel, Michael R. Parrish, Noel M. Seimandi +1 more | 1998-02-03 |
| 5658455 | Fluidized bed coking process | David G. Hammond, John F. Pagel, Martin C. Poole, Robert C. Green, Willibald Serrand | 1997-08-19 |