Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12083538 | Electrostatic air filter | Geoffrey Norman Walter Gay | 2024-09-10 |
| 10286405 | Air cleaning device and apparatus | Geoffrey Norman Walter Gay, Mark Gaskell | 2019-05-14 |
| 7655076 | Device for air cleaning | Geoffrey Norman Walter Gay | 2010-02-02 |
| 7014688 | Air cleaning device | Geoffrey Norman Walter Gay | 2006-03-21 |
| 6749669 | Air cleaning device | Geoffrey Norman Walter Gay | 2004-06-15 |
| 4433455 | Cleaning waste from beneath machinery | — | 1984-02-28 |