Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7807054 | Chromatography columns | John Graham Dunkley, Melvyn Gill | 2010-10-05 |
| 7578934 | Chromatographic column seal | Melvyn Gill, John Graham Dunkley, Geoff Purdom | 2009-08-25 |
| 7534346 | Chromatography columns | John Graham Dunkley, Melvyn Gill | 2009-05-19 |
| 7041216 | Chromatography column | John Graham Dunkley, Melvyn Gill | 2006-05-09 |
| 6984318 | Chromatographic column seal | Melvyn Gill, John Graham Dunkley, Geoff Purdom | 2006-01-10 |
| 6117317 | Chromatographic column and valve with movable valve sleeve | Nicola Jane Dickson | 2000-09-12 |
| 4744386 | Modular hydraulic actuator | — | 1988-05-17 |