OTV SA
33Patents
18Active
33Granted
46Portfolio score
Filing activity: Jun 18, 2001 → Feb 12, 2010 · 18 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7001525B2 | Method for the treatment of water by ballasted flocculation and gravity separation with variable function modes | Chemistry; Metallurgy | 40 | Expired |
| US6824692B2 | Installation for measuring concentration in dense granular material of a flow and water treatment system comprising same | Chemistry; Metallurgy | 31 | Expired |
| US6645386B1 | Water treatment method by ballasted floc including a recycling of granular material | Performing Operations; Transporting | 29 | Expired |
| US7578416B2 | Water purification apparatus | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6966989B2 | Method and installation for the thermal hydrolysis of sludge | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7648638B2 | Method for treating wastewater | Chemistry; Metallurgy | 22 | Active |
| US7648637B1 | Water treatment method by ballasted flocculation, settling, and prior adsorbent contact | Chemistry; Metallurgy | 21 | Active |
| US7374694B2 | Method for remineralizing raw water | Chemistry; Metallurgy | 18 | Expired |
| US6966993B2 | Method and plant for thickening sludge derived from water treatment by flocculation-decantation with ballasted floc | Chemistry; Metallurgy | 18 | Expired |
| US7244362B2 | Water treatment by ballasted flocs and degreasing | Chemistry; Metallurgy | 17 | Expired |
| US7101482B2 | Method and facility for treatment of sludge derive from biological water purification facilities | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6632365B1 | Method for treating an effluent using simultaneous nitrification/denitrification in a biological filter | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7722776B2 | Gravitational separation device for water treatment | Performing Operations; Transporting | 10 | Active |
| US7695624B2 | Method and system for treating water and utilizing a membrane filtering system | Emerging Cross-Sectional Technologies | 10 | Active |
| US7317193B2 | Ultraviolet radiation water disinfecting device | Chemistry; Metallurgy | 7 | Expired |
| US7981297B2 | Wastewater treatment method comprising decantation and fine screening stages | Chemistry; Metallurgy | 6 | Active |
| US7683354B2 | Water treating reactor for the drinkability thereof | Chemistry; Metallurgy | 6 | Active |
| US7790022B2 | Water filter and treatment system and component | Chemistry; Metallurgy | 5 | Active |
| US7641800B2 | Use of an adsorbent for the removal of liquid, gaseous and/or dissolved constituents from a process stream | Performing Operations; Transporting | 5 | Active |
| US8187462B2 | Process for maximizing PHA production in glycogen accumulating organisms | Chemistry; Metallurgy | 3 | Active |
| US8092688B2 | Method of treating water by ballasted flocculation/settling, which includes a continuous measurement of the ballast, and corresponding installation | Emerging Cross-Sectional Technologies | 3 | Active |
| US8043501B2 | Reagent injector for equipping a water treatment reactor, comprising a nozzle associated with a dispersing member, and corresponding water treatment device | Chemistry; Metallurgy | 3 | Active |
| US7947228B2 | Device for disinfecting water by means of ultraviolet radiation | Chemistry; Metallurgy | 2 | Active |
| US7273556B2 | Method for treating water containing manganese | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7404898B2 | Method and installation for the production of lime water from deionised water | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.