Hydro International Ltd
42Patents
21Active
42Granted
44Portfolio score
Filing activity: May 14, 1985 → Oct 15, 2020 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5800114A | Container handling device | Performing Operations; Transporting | 63 | Expired |
| US6374858B1 | Vortex valves | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6730222B1 | Hydrodynamic vortex separator | Performing Operations; Transporting | 32 | Expired |
| US4865751A | Separation of components of a fluid mixture | Performing Operations; Transporting | 31 | Expired |
| US5116516A | Gravitational separator for separating solid components out of a liquid mixture | Performing Operations; Transporting | 24 | Expired |
| US4783265A | Water treatment | Chemistry; Metallurgy | 23 | Expired |
| US5337789A | Vortex valves | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4747962A | Separation of components of a fluid mixture | Performing Operations; Transporting | 21 | Expired |
| US4983295A | Separator | Performing Operations; Transporting | 21 | Expired |
| US7094337B2 | Overflow chamber | Fixed Constructions | 20 | Expired |
| US5188238A | Separator for separating solids components of liquid mixtures and method of using the same | Performing Operations; Transporting | 19 | Expired |
| US4983294A | Separator | Performing Operations; Transporting | 18 | Expired |
| US4889166A | Vortex valves | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7699984B2 | Hydrodynamic treatment device | Performing Operations; Transporting | 14 | Expired |
| US6953524B2 | Screen assembly for combined sewer overflow weir | Fixed Constructions | 13 | Expired |
| US8555924B2 | Vortex flow control device | Emerging Cross-Sectional Technologies | 10 | Active |
| US5640988A | Vortex valves | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5698099A | Hydrodynamic separator with an incorporated solids interceptor | Performing Operations; Transporting | 9 | Expired |
| US8900448B2 | Treatment device | Chemistry; Metallurgy | 8 | Active |
| US7344636B2 | Separator | Performing Operations; Transporting | 7 | Expired |
| US5480559A | Liquid treatment | Performing Operations; Transporting | 7 | Expired |
| US8342338B2 | Separator for separating solids from an influent | Performing Operations; Transporting | 5 | Active |
| US6187178A | Separator with solids diverter | Performing Operations; Transporting | 5 | Expired |
| US9688544B2 | Treatment device | Chemistry; Metallurgy | 3 | Active |
| US10287769B2 | Stormwater filter | Fixed Constructions | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.