Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10773980 | Method and system for preparing a fenton Fe2+/H2O2 reagent | Abdelaziz Gherrou | 2020-09-15 |
| 9382140 | Method for reducing chromium | Abdelaziz Gherrou | 2016-07-05 |
| 6277290 | Process for recovering silver from photographic solutions | Jian Ren | 2001-08-21 |
| 6120194 | Photographic liquids effluent discharge | Denis BRUNELLE, Bernard Gravel, Jian Ren | 2000-09-19 |
| 5900041 | Value metal recovery | Jian Ren | 1999-05-04 |
| 5807488 | Exchangeable filter medium container and method of connecting and recycling such containers | Denis BRUNELLE, Bernard Gravel, Gordon Bathurst | 1998-09-15 |
| 5792347 | Effluent precipitation and neutralization vessel and method | Gordon Bathurst | 1998-08-11 |