Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4396756 | Aldehyde condensate tackifiers for rubber | Richard Baur, Knut Oppenlaender, Hubertus Queins, Hubert Schoeppl | 1983-08-02 |
| 4277422 | Vulcanization activator | Herbert Mueller, Hubert Schoeppl, Emil Scharf | 1981-07-07 |