Top Inventors at Weir Pumps Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Michael Leslie Ryall | 2 |
| 2 | Bjarne Olsen | 1 |
| 3 | John M. Taylor | 1 |
| #4 | Paul Gregory | 1 |
| #5 | Per Almdahl | 1 |
| #6 | Per Eivind Gramme | 1 |
| #7 | Robert W. Brown | 1 |
| #8 | Sven Arne Kjolberg | 1 |
| #9 | Terje Sondtvedt | 1 |
| #10 | Alexander Angus Grant | 1 |
| #11 | Angus Grant | 1 |