Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687771 | Temporarily blocking the bore of a pipe through which a fluid flows with a foamed plug removed by dissolving | — | 1997-11-18 |
| 5400826 | Temporarily blocking the bore of a pipe through which a fluid flows with a foamed plus removed by dissolving | — | 1995-03-28 |
| 5179752 | Cover for trenches | Richard J. Yeowart, Mansel Moore | 1993-01-19 |
| 4643855 | Sealing joints and leaks | Adrian S. Parkes, Gordon J. Corbett, Colin N. H. Barker | 1987-02-17 |
| 4627471 | Sealing joints and leaks | Adrian S. Parkes, Gordon J. Corbett, Colin N. H. Barker | 1986-12-09 |
| 4582551 | Sealing joints and leaks with an anaerobic liquid | Adrian S. Parkes, Gordon J. Corbett, Colin N. H. Barker | 1986-04-15 |
| 4360508 | Treatment of effluents | Frederick Farrington | 1982-11-23 |
| 4351006 | Method of and apparatus for storing data signals | Donald C. Walker | 1982-09-21 |