Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9150433 | Dynamo powered ultraviolet water purification system | Costas Papadopoulos | 2015-10-06 |
| 8828222 | Photocatalytic intermittent flow-through purification module | — | 2014-09-09 |
| 8362432 | Optical liquid sensor | — | 2013-01-29 |
| 8226831 | UV LED based water purification module for intermittently operable flow-through hydration systems | — | 2012-07-24 |
| 8197771 | Two bottle filter connector system with removeable ring | — | 2012-06-12 |
| 7713483 | Portable filter cap | — | 2010-05-11 |
| 7641790 | UV LED based water purification module for intermittently operable flow-through hydration systems | — | 2010-01-05 |
| 6579495 | Hand-held ultraviolet water purification system using solid state devices | — | 2003-06-17 |
| 6110424 | Hand-held ultraviolet water purification system | Robert Watkins | 2000-08-29 |
| 5900212 | Hand-held ultraviolet water purification system | Robert Watkins | 1999-05-04 |
| 5253637 | Hyperfocal tracking solar thermal collector | — | 1993-10-19 |