Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5071445 | Novel reaction products of aminoalkylene polycarboxylic acids with secondary amines and middle distillate compositions containing the aforesaid | Knut Oppenlaender, Brigitte Wegner, Klaus Barthold, Erich Schwartz, Egon Buettner | 1991-12-10 |
| 4417038 | Ethylene-alkyne copolymers, their preparation and their use as additives to petroleum distillates | Hans-Henning Vogel, Michael J. Werner, Erich Schwartz | 1983-11-22 |