Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5846453 | Process for producing oligoamines or polyamines | Jurgen Mohr, Wolfgang Knauf, Wolf-Dieter Balzer, Knut Oppenlander | 1998-12-08 |
| 5783524 | Use of glycine-N,N-diacetic acid derivatives as complexing agents for alkaline earth metal and heavy metal ions in the production and transport of petroleum and natural gas | Thomas Greindl | 1998-07-21 |
| 5759409 | Separation of water from crude oil and oil demulsifiers used for this purpose | Wolfgang Knauf, Knut Oppenlander | 1998-06-02 |
| 5661220 | Reaction products of olefinically unsaturated carboxylic acids and polyetherols and their use as demulsifiers for crude oil emulsions | Dieter Faul, Joachim Roser, Heinrich Hartmann, Hans-Henning Vogel, Gerd Konrad | 1997-08-26 |
| 5250225 | Ammonium salt of an alkenylsuccinic half-amide and the use thereof as corrosion inhibitor in oil and/or gas production technology | Knut Oppenlaender, Brigitte Wegner | 1993-10-05 |
| 4537701 | Demulsifiers for breaking crude-oil emulsions and their use | Knut Oppenlaender, Rolf Fikentscher, Egon Buettner, Erich Schwartz, Rudolf Mohr | 1985-08-27 |
| 4405494 | Polyhydroxy-polyalkylene-polyamine salts of maleic amide acids as corrosion inhibitors in water-in-oil emulsions | Knut Oppenlaender, Erich Schwartz, Klaus Barthold | 1983-09-20 |