Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11319473 | Environmentally friendly ester-structures as viscosifier for oil based drilling fluids | Patrick Haehnel | 2022-05-03 |
| 7959743 | Lithium salts of fatty alcohol sulphates for cleaning boreholes, boring devices and borings | Heinz Mueller, Nadja Herzog | 2011-06-14 |