Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10344241 | Acid-free quaternized nitrogen compounds and use thereof as additives in fuels and lubricants | Wolfgang Grabarse, Harald Boehnke, Cornelia Roeger-Goepfert, Ludwig Voelkel | 2019-07-09 |
| 10336957 | Acid-free quaternized nitrogen compounds and use thereof as additives in fuels and lubricants | Wolfgang Grabarse, Harald Boehnke, Cornelia Roeger-Goepfert, Ludwig Voelkel | 2019-07-02 |