Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7696304 | Thermally stable water-soluble polymer which is crosslinkable at high temperatures | Christoph Kayser, Gernold Botthof, Karl Heinz Heier, Matthias Krull, Michael Schaefer | 2010-04-13 |
| 7150319 | Method for reducing or completely eliminating water influx in an underground formation, and crosslinkable copolymers for implementing said method | Karl Heinz Heier, Christoph Kayser, Michael Schaefer, Roman Morschhaeuser, James C. Morgan +1 more | 2006-12-19 |
| 7053146 | Compositions containing copolymers based on acryloyldimethyl aminoethylsulfonic acid and synergistic additives | Roman Morschhäuser, Christoph Kayser, Matthias Loffler, Karl Heinz Heier, Manfred Schade +1 more | 2006-05-30 |
| 6891011 | Comb-shaped copolymers based on acryloyldimethyltaurine acid | Roman Morschhäuser, Jan Glauder, Matthias Loffler, Christoph Kayser | 2005-05-10 |
| 6395853 | Water-soluble copolymers and their use for exploration and production of petroleum and natural gas | Reinhard J. Oswald, Roman Morschhäuser, Karl Heinz Heier, Juergen Tonhauser, Christoph Kayser +1 more | 2002-05-28 |
| 6380137 | Copolymers and their use as drilling aids | Karl Heinz Heier, Roman Morschhäuser, Susanne Weber, Gernold Botthof | 2002-04-30 |
| 6277900 | Well cementing aids | Reinhard J. Oswald, Volker Frenz, Juergen Tonhauser, Pierre Maroy, Florence L'Alloret | 2001-08-21 |