Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8283407 | Processing aids for elastomeric compositions | Walter H. Waddell, David Yen-Lung Chung, Donald S. Tracey | 2012-10-09 |
| 8247496 | Processing aids for elastomeric compositions | Walter H. Waddell, David Yen-Lung Chung, Donald S. Tracey | 2012-08-21 |
| 7960454 | Processing aids for elastomeric compositions | Walter H. Waddell, David Yen-Lung Chung, Donald S. Tracey, Dirk Frans Rouckhout | 2011-06-14 |