Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6376736 | Production of high purity meta-xylene | James S. Law, Douglas S. Hubbell | 2002-04-23 |
| 5811629 | Crystallization process for purification of paraxylene | Douglas S. Hubbell | 1998-09-22 |