Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10308858 | Biodegradable anti-accretion additive for water-based drilling fluids | Andrea Assmann, Jutta Karin Langlotz | 2019-06-04 |
| 9783730 | Method for recovering petroleum | Björn Langlotz, Tobias Joachim Zimmermann, Christian Bittner | 2017-10-10 |
| 9777094 | Water-soluble, hydrophobically associating copolymers having novel hydrophobically associating monomers | Christian Bittner, Björn Langlotz, Benjamin Wenzke, Christian Spindler | 2017-10-03 |
| 9701890 | Process for tertiary mineral oil production | Björn Langlotz, Ian Robert Macefield, Christian Spindler | 2017-07-11 |
| 9657137 | Process for preparing a macromonomer | Christian Bittner, Björn Langlotz, Benjamin Wenzke, Christian Spindler, Markus Klumpe +3 more | 2017-05-23 |
| 9409820 | Use of CSH suspensions in well cementing | Luc Nicoleau | 2016-08-09 |
| 9315717 | Water-soluble, hydrophobic associating copolymers | Thomas Pfeuffer, Stefan Friedrich, Marcus Guzmann | 2016-04-19 |
| 9163103 | Hydrophobically associating copolymers | Thomas Pfeuffer, Kati Schmidt, Thomas Ostrowski, Reinhold J. Leyrer, Yulia Fogel +7 more | 2015-10-20 |
| 9051503 | Use of hydrophobically associated copolymer as an additive in specific oilfield applications | Oscar Lafuente Cerda, Andrea Assmann, Björn Langlotz | 2015-06-09 |
| 8975362 | Graft copolymer as a gas hydrate inhibitor | Karin Neubecker | 2015-03-10 |
| 8939206 | Process for mineral oil production using hydrophobically associating copolymers | Björn Langlotz, Christian Spindler, Benjamin Wenzke | 2015-01-27 |
| 8802748 | Graft polymer mixture | Andrea Assmann | 2014-08-12 |
| 8783356 | Hydrophobically associating copolymers | Thomas Pfeuffer, Kati Schmidt, Thomas Ostrowski, Reinhold J. Leyrer, Yulia Fogel +7 more | 2014-07-22 |
| 8763698 | Process for producing mineral oil from underground formations | Andrea Aβmann, Björn Langlotz, Christian Spindler, Russell Giesbrecht | 2014-07-01 |
| 8752624 | Aqueous formulations of hydrophobically associating copolymers and surfactants and use thereof for mineral oil production | Björn Langlotz | 2014-06-17 |
| 8470907 | Additive for cementing wells | Tinton Setiawan, Johann Plank | 2013-06-25 |
| 8362180 | Hydrophobically associating copolymers | Thomas Pfeuffer, Kati Schmidt, Thomas Ostrowski, Reinhold J. Leyrer, Yulia Fogel +7 more | 2013-01-29 |
| 8124670 | Water-soluble and biodegradable copolymers on a polyamide basis and use thereof | Martin Matzinger, Gregor Keilhofer, Johann Plank, Christian Spindler | 2012-02-28 |