Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6149788 | Method and apparatus for preventing scaling in electrodeionization units | David Florian Tessier, John H. Barber | 2000-11-21 |
| 6056878 | Method and apparatus for reducing scaling in electrodeionization systems and for improving efficiency thereof | David Florian Tessier, Tom Kosir, Steve Siverns, Mark Philip Huehnergard | 2000-05-02 |