Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6045695 | Biological treatment of spent caustics | Albert Joseph Hendrik Janssen, Cees Jan Nico Buisman, Jan Bontsema, Gerrit Van Straten, Johannes Gijsbrecht Kuenen +1 more | 2000-04-04 |
| 4183809 | Process for removing organic substances and nitrogen compounds from waste water | Abraham Klapwijk | 1980-01-15 |