Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357923 | Rotary piston internal combustion engine | Heinrich Stallkamp | 1994-10-25 |
| 4334964 | Process for separating the reaction products obtained from etherifying lower isoolefins with methanol | Milan Prezelj, Joachim E. Putz | 1982-06-15 |