Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11761461 | Rotary servo valve | Andrew Collins | 2023-09-19 |
| 10287513 | Method and apparatus for recovering synthetic oils from composite oil streams | — | 2019-05-14 |
| 10287514 | Method and apparatus for recovering synthetic oils from composite oil streams | — | 2019-05-14 |
| 9677013 | Method for producing base lubricating oil from oils recovered from combustion engine service | — | 2017-06-13 |
| 8936718 | Method for producing base lubricating oil from waste oil | — | 2015-01-20 |
| 8366912 | Method for producing base lubricating oil from waste oil | — | 2013-02-05 |
| 6117309 | Method of rerefining waste oil by distillation and extraction | Alexander D. B. Daspit, Thomas G. Murray | 2000-09-12 |
| 6106699 | Process for de-chlorinating and de-fouling oil | Alexander D. B. Daspit, Thomas G. Murray | 2000-08-22 |