Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6117309 | Method of rerefining waste oil by distillation and extraction | Martin R. MacDonald, Thomas G. Murray | 2000-09-12 |
| 6106699 | Process for de-chlorinating and de-fouling oil | Martin R. MacDonald, Thomas G. Murray | 2000-08-22 |