Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5514871 | Optical radiation sensor device | Stewart J. Hayes, Richard Pearcey, Peter R. Andreae, Mark R. Lowenstine | 1996-05-07 |
| 5471063 | Fluid disinfection system | Stewart J. Hayes, Richard Pearcey | 1995-11-28 |