Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9982182 | Drilling composition, process for its preparation, and applications thereof | Heinz-Joachim Muller, Diana Maker, Michael Fefer, Jun Liu | 2018-05-29 |
| 9745502 | Drilling composition, process for its preparation, and applications thereof | Heinz-Joachim Muller, Diana Maker, Michael Fefer, Jun Liu | 2017-08-29 |
| 8193125 | Crosslinked glycerol or oligoglycerol esters, and use thereof as an additive in drilling fluids | Heinz-Joachim Muller, Diana Maker, Alfred Westfechtel | 2012-06-05 |
| 8153562 | Oligoglycerol fatty acid ester thickeners for oil-based drilling fluids | Heinz-Joachim Muller, Diana Maker | 2012-04-10 |
| 7959743 | Lithium salts of fatty alcohol sulphates for cleaning boreholes, boring devices and borings | Heinz Mueller, Diana Maeker | 2011-06-14 |
| 7741248 | Borehole treating substance containing ether carboxylic acids | Heinz Mueller, Ansgar Behler, Jens Hartmann | 2010-06-22 |
| 7666820 | Borehole treatment agent containing low-toxic oil phase | Heinz Mueller, Stephan von Tapavicza | 2010-02-23 |
| 6806235 | Lubricants for drilling fluids | Heinz Mueller, Claus-Peter Herold, Frank Bongardt, Stephan von Tapavicza | 2004-10-19 |