Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4961826 | Distillation process for ethanol | Hans E. Grethlein | 1990-10-09 |
| 4626321 | Distillation systems and methods | Hans E. Grethlein | 1986-12-02 |
| 4425432 | Propagation of microbial cells on single carbon products | Joseph G. Zeikus | 1984-01-10 |