Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977048 | Method of recycling water contaminated oil based drilling fluid | Juergen Rudolph | 2005-12-20 |
| 6918728 | Circlip | Karl Frauhammer, Manfred Hellbach, Heinz Schnerring, Joerg Friedrich, Andreas Strasser | 2005-07-19 |
| 6881349 | Method for recycling of oil based drilling fluid contaminated with water and water contaminated with oil based drilling fluid | — | 2005-04-19 |