Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4643855 | Sealing joints and leaks | Adrian S. Parkes, Peter S. Clough, Colin N. H. Barker | 1987-02-17 |
| 4627471 | Sealing joints and leaks | Adrian S. Parkes, Peter S. Clough, Colin N. H. Barker | 1986-12-09 |
| 4582551 | Sealing joints and leaks with an anaerobic liquid | Adrian S. Parkes, Peter S. Clough, Colin N. H. Barker | 1986-04-15 |