Weir Pumps Limited
9Patents
0Active
9Granted
27Portfolio score
Filing activity: Apr 30, 1975 → Jul 24, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6691781B2 | Downhole gas/water separation and re-injection | Mechanical Engineering; Lighting; Heating | 85 | Expired |
| US6601651B2 | Downhole gas compression | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US5755554A | Multistage pumps and compressors | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4143999A | Fluid machines | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5562405A | Multistage axial flow pumps and compressors | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6884031B2 | Pump assembly | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4108569A | Lubricated mechanical seals for pumps | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US5088891A | Pump with seal cooling means | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US3976391A | Rotodynamic fluid pumps | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.