Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5732766 | Method and apparatus for the treatment of gas streams | John L. Oakton, Alex George Hunter | 1998-03-31 |
| 5129923 | Oil coalescing filter and filtering process | Andrew Chalmers | 1992-07-14 |
| 5114572 | Filter assembly and cartridge therefor | Michael J. Hawker | 1992-05-19 |
| 4989636 | Coupling for pressure of vacuum fluid system | Michael J. Hawker | 1991-02-05 |
| 4559066 | Filters for purification of gases | Brian Walker, Kenneth Merrie | 1985-12-17 |
| 4237669 | Seam eliminator for butt joints | — | 1980-12-09 |
| 4196027 | Method of making filter elements for gas or liquid | Brian Walker, Susanne Phyllis Hunter | 1980-04-01 |