Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Wilhelmus Slotman, Gerd Konrad | 1997-08-26 |
| 5445765 | Petroleum emulsion breakers | Guenther Elfers, Wilfried Sager, Knut Oppenlaender | 1995-08-29 |
| 5401439 | Oil-demulsifiers based on an alkoxylate and preparation of this alkoxylate | Guenther Elfers, Wilfried Sager, Knut Oppenlaender | 1995-03-28 |
| 5393463 | Use of trialkanolamine polyethers as demulsifiers for oil-in-water emulsions | Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Klaus Barthold +1 more | 1995-02-28 |
| 5234626 | Methods of demulsifying employing condensates as demulsifiers for oil-in water emulsions | Rolf Fikentscher, Knut Oppenlaender, Johannes P. Dix, Wilfried Sager, Guenther Elfers | 1993-08-10 |
| 5194068 | Ester-containing fuel for gasoline engines and diesel engines | Juergen Mohr, Knut Oppenlaender, Roland Schwen, Hans Peter Rath, Juergen Thomas | 1993-03-16 |
| 5112364 | Gasoline-engine fuels containing polyetheramines or polyetheramine derivatives | Hans Peter Rath, Helmut Mach, Knut Oppenlaender, Willibald Schoenleben | 1992-05-12 |
| 5026494 | Amino group-containing graft polymer, and its use as a dispersing viscosity index improver | Walter Denzinger, Helmut Mach, Juergen Mohr, Knut Oppenlaender, Roland Schwen | 1991-06-25 |
| 5009670 | Fuels for gasoline engines | Franz-Dieter Martischius, Norbert Greif, Knut Oppenlaender, Walter Denzinger, Heinrich Hartmann | 1991-04-23 |
| 5004478 | Motor fuel for internal combustion engines | Hans Peter Rath, Claus P. Jakob, Knut Oppenlaender | 1991-04-02 |
| 4959077 | Fuels for gasoline engines | Franz-Dieter Martischius, Hans Peter Rath, Norbert Greif, Knut Oppenlaender, Walter Denzinger +1 more | 1990-09-25 |
| 4871375 | Fuels for Otto engines | Franz-Dieter Martischius, Knut Oppenlaender | 1989-10-03 |
| 4844714 | Fuels containing small amounts of alkoxylates and polycarboximides | Hans Peter Rath, Knut Oppenlaender, Charalampos Gousetis | 1989-07-04 |
| 4790957 | Polycarboxylic acid esters and lubricants containing these esters | Helmut Mach, Juergen Jahn | 1988-12-13 |
| 4681719 | Production of compression moldings from finely divided thermoplastic polymers | — | 1987-07-21 |
| 4663406 | Catalyst systems for the cationic polymerization of isobutylene | Klaus Bronstert, Waldhelm Hochstein, Heinrich Mohr, Gerhard Sandrock, Hans Peter Rath | 1987-05-05 |
| 4599433 | Reaction of olefins with maleic anhydride | Klaus Bronstert, Hans Peter Rath | 1986-07-08 |
| 4587307 | Quality of isobutene polymers in reactions with maleic anhydride | Klaus Bronstert, Waldhelm Hochstein, Hans Peter Rath | 1986-05-06 |
| 4435298 | Ammonium salts of polymaleic acids, and their use as corrosion inhibitors in mineral oils | Knut Oppenlaender, Karl Stork, Erich Schwartz, Claus P. Jakob | 1984-03-06 |
| 4417038 | Ethylene-alkyne copolymers, their preparation and their use as additives to petroleum distillates | Manfred Schramm, Michael J. Werner, Erich Schwartz | 1983-11-22 |
| 4323689 | 2-Hydroxypropylimidazoles, their preparation, and their use as oil-soluble corrosion inhibitors | Rainer Strickler, Knut Oppenlaender, Richard Baur | 1982-04-06 |
| 4242101 | Fuels for gasoline engines | Knut Oppenlaender, Klaus Starke | 1980-12-30 |