Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298079 | Process for cleaning used oil filters | — | 1994-03-29 |
| 5252138 | Water/surfactant process for recovering hydrocarbons from soil in the absence of emulsifying the oil | — | 1993-10-12 |
| 5195847 | Process for cleaning drilling mud contaminated with hydrocarbons | — | 1993-03-23 |
| 4968412 | Solvent and water/surfactant process for removal of bitumen from tar sands contaminated with clay | — | 1990-11-06 |