Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061389 | Duct leakage control | — | 2011-11-22 |
| 7856864 | Deriving information about leaks in pipes | Nicholas John Ryan | 2010-12-28 |
| 7810523 | Duct seepage reduction | Ian Beveridge Chirnside, Nicholas John Ryan | 2010-10-12 |