Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5720882 | Treatment method for waste water sludge comprising phoshorous, heavy metals and at least one metal | Simo Jokinen | 1998-02-24 |
| 5662826 | Process for the preparation of a coagulating chemical comprising dissolving a solid zeolite in a solution of trivalent metal salt | Rolf Olof Nilsson | 1997-09-02 |
| 5182094 | Process for the preparation of polyaluminum compounds | Magnus Kvant | 1993-01-26 |
| 4663055 | Method and apparatus for distributing water purifying chemicals | Tommy Ling | 1987-05-05 |