Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6120194 | Photographic liquids effluent discharge | John Riviere, Bernard Gravel, Jian Ren | 2000-09-19 |
| 5807488 | Exchangeable filter medium container and method of connecting and recycling such containers | John Riviere, Bernard Gravel, Gordon Bathurst | 1998-09-15 |