Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663435 | Reaction products of aminoalkylenecarboxylic acids and mineral oil middle distillates which contain them | Gabriele Dralle-Voss, Knut Oppenlander, Bernd Wenderoth, Wolfgang Kasel | 1997-09-02 |
| 5472617 | Method of demulsifying crude oil and water mixtures with copolymers of acrylates or methacrylates and hydrophilic commonomers | Richard Baur, Stevano Crema, Knut Oppenlaender, Juergen Lasowski | 1995-12-05 |
| 5393463 | Use of trialkanolamine polyethers as demulsifiers for oil-in-water emulsions | Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Hans-Henning Vogel +1 more | 1995-02-28 |
| 5376155 | Mineral oil middle distillate compositions | Gabriele Dralle-Voss, Knut Oppenlaender, Bernd Wenderoth, Wolfgang Kasel | 1994-12-27 |
| 5282872 | Fuel for Otto-cycle engines | Knut Oppenlaender, Brigitte Wegner, Juergen Mohr, Roland Schwen, Juergen Thomas | 1994-02-01 |
| 5178641 | Middle distillates of crude oil having improved cold flow properties | Gerd Konrad, Bernd Wenderoth, Erich Schwartz, Hans-Juergen Raubenheimer, Heinrich Hartmann | 1993-01-12 |
| 5071445 | Novel reaction products of aminoalkylene polycarboxylic acids with secondary amines and middle distillate compositions containing the aforesaid | Knut Oppenlaender, Brigitte Wegner, Erich Schwartz, Egon Buettner, Manfred Schramm | 1991-12-10 |
| 4935162 | Alkoxylated amido-containing polyamines and their use for breaking oil-in-water and water-in-oil emulsions | Richard Baur, Rolf Fikentscher, Juergen Lasowski, Knut Oppenlaender | 1990-06-19 |
| 4814394 | Polyethers obtainable by reacting alkylolated bis-(4-hydroxyphenyl)-methanes with polyalkylene oxides, and their use as oil demulsifiers | Knut Oppenlaender, Juergen Lasowski, Richard Baur | 1989-03-21 |
| 4705834 | Crosslinked oxyalkylated polyalkylenepolyamines | Richard Baur, Knut Oppenlaender | 1987-11-10 |
| 4675348 | Process for optimizing the properties of aqueous polymer solutions used in polymer flooding | Franz-Dieter Martischius, Dieter Karau, Werner Arnold | 1987-06-23 |
| 4546151 | Oxyalkylated polyamidoamines and their preparation | Richard Baur, Knut Oppenlander, Rainer Strickler | 1985-10-08 |
| 4517114 | Inhibitors against corrosion caused by CO.sub.2 and H.sub.2 S in water-in-oil emulsions | Knut Oppenlaender, Karl Stork | 1985-05-14 |
| 4436639 | Ammonium salts of polymaleic acids and use as corrosion inhibitors in water-in-oil emulsions | Knut Oppenlaender, Karl Stork | 1984-03-13 |
| 4405494 | Polyhydroxy-polyalkylene-polyamine salts of maleic amide acids as corrosion inhibitors in water-in-oil emulsions | Knut Oppenlaender, Erich Schwartz, Wilhelmus Slotman | 1983-09-20 |
| 4388213 | Cyclic amidine based corrosion inhibitors which inhibit corrosion caused by CO.sub.2 and H.sub.2 S | Knut Oppenlaender, Karl Stork | 1983-06-14 |
| 4388214 | Imidazoline based corrosion inhibitors which inhibit corrosion caused by CO.sub.2 and H.sub.2 S | Knut Oppenlaender, Karl Stork | 1983-06-14 |
| 4324675 | Protective additive for radiators in coolants containing water | Gert Liebold | 1982-04-13 |