Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5178641 | Middle distillates of crude oil having improved cold flow properties | Gerd Konrad, Bernd Wenderoth, Klaus Barthold, 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, Klaus Barthold, Egon Buettner, Manfred Schramm | 1991-12-10 |
| 4675025 | Aqueous coal dispersions | Knut Oppenlaender, Karl Stork, Friedrich Hovemann | 1987-06-23 |
| 4657560 | Aqueous coal dispersions | Knut Oppenlaender, Karl Stork, Friedrich Hovemann | 1987-04-14 |
| 4537701 | Demulsifiers for breaking crude-oil emulsions and their use | Knut Oppenlaender, Rolf Fikentscher, Egon Buettner, Wilhelmus Slotman, Rudolf Mohr | 1985-08-27 |
| 4435298 | Ammonium salts of polymaleic acids, and their use as corrosion inhibitors in mineral oils | Knut Oppenlaender, Karl Stork, Hans-Henning Vogel, Claus P. Jakob | 1984-03-06 |
| 4417038 | Ethylene-alkyne copolymers, their preparation and their use as additives to petroleum distillates | Hans-Henning Vogel, Manfred Schramm, Michael J. Werner | 1983-11-22 |
| 4405494 | Polyhydroxy-polyalkylene-polyamine salts of maleic amide acids as corrosion inhibitors in water-in-oil emulsions | Knut Oppenlaender, Klaus Barthold, Wilhelmus Slotman | 1983-09-20 |