Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7626065 | Process for producing para-xylene | John Di-Yi Ou, John R. Porter | 2009-12-01 |
| 7439412 | Process for producing para-xylene | John Di-Yi Ou, John R. Porter | 2008-10-21 |
| 6489527 | Process for improving purity of para-xylene product | John Di-Yi Ou, Dana L. Pilliod | 2002-12-03 |
| 5443715 | Method for upgrading steam cracker tars | Dane C. Grenoble, Roy T. Halle, Martin L. Gorbaty | 1995-08-22 |
| 5215649 | Method for upgrading steam cracker tars | Dane C. Grenoble, Roy T. Halle, Martin L. Gorbaty | 1993-06-01 |