Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11512368 | Method for removing fluoride from a zinc-containing solution or suspension, defluoridated zinc sulfate solution and use thereof, and method for producing zinc and hydrogen fluoride or hydrofluoric acid | Stefan STEINLECHNER, Jürgen Antrekowitsch | 2022-11-29 |
| 4673510 | Process for the disposal of settled sludge derived from a biological sewage-disposal plant | Alois Janusch, Walter Lugscheider | 1987-06-16 |