Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9809480 | Wastewater treatment process and system | Robert John Stephenson, Preston Yee Ming Hoy, Patrick William George Neill | 2017-11-07 |
| 9145315 | Wastewater treatment process and system | Robert John Stephenson, Preston Yee Ming Hoy, Patrick William George Neill | 2015-09-29 |