Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660735 | Method for removing metals from waste solutions | Wayne C. Hazen | 1997-08-26 |
| 5632825 | Apparatus and method for inhibiting the leaching of lead in water | Jerome P. Downey, Wayne C. Hazen, Paul B. Queneau | 1997-05-27 |