DEGREMONT
🏢 View company profile →124Patents
29Active
124Granted
46Portfolio score
Filing activity: Aug 19, 1975 → Oct 30, 2014 · 15 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4482458A | Process and apparatus for the anaerobic treatment of waste water in a filter including granular material | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6808629B2 | Method for effluent purification | Emerging Cross-Sectional Technologies | 63 | Expired |
| US4633909A | Apparatus for the rapid in-line mixing of two fluids | Emerging Cross-Sectional Technologies | 61 | Expired |
| US4707252A | Fluid bed reactor for the biological treatment of water | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4142971A | Process and system for the dehydration of residues | Performing Operations; Transporting | 34 | Expired |
| US4136012A | Compact apparatus for the purification of waste water by a physical chemical treatment | Chemistry; Metallurgy | 32 | Expired |
| US4900437A | Device for the introduction of a fluid in a receiving medium, such as that of an apparatus used for the treatment of liquids, notably water | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4561974A | Apparatus for the anaerobic filtration of waste water | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4604197A | Submerged filter filled with granular material | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6077430A | Method for eliminating phosphorous contained in effluents | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5503747A | Device for treating waste water especially rainwater | Performing Operations; Transporting | 25 | Expired |
| US6210587A | Method for the physico-chemical treatment of effluents, in particular of surface water for consumption | Chemistry; Metallurgy | 24 | Expired |
| US4579655A | Apparatus for treating water by flocculation and/or crystalline precipitation, settling and sludge recycling | Performing Operations; Transporting | 24 | Expired |
| US4156644A | Pulsating sludge bed with inclined plates | Performing Operations; Transporting | 24 | Expired |
| US4720347A | Method and apparatus for the filtration of a suspension by a granular filtrating layer | Performing Operations; Transporting | 24 | Expired |
| US4869815A | Fluidized bed reactor with means for ensuring homogeneous distribution of the fluid to be treated | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5498347A | Reactor for the ozonization of water | Chemistry; Metallurgy | 22 | Expired |
| US6210588A | Method for the physico-chemical treatment of effluents in particular surface water for consumption | Chemistry; Metallurgy | 21 | Expired |
| US4435286A | Liquid filter device | Performing Operations; Transporting | 20 | Expired |
| US4216096A | Ozone generation device and electrode | Chemistry; Metallurgy | 20 | Expired |
| US6569336B1 | Method, device and use of said method for biological elimination of metal elements present in an ionized state in water | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7651620B2 | Pressurised water releasing nozzle for generating microbubbles in a flotation plant | Performing Operations; Transporting | 16 | Active |
| US5591342A | Process for the anaerobic digestion of liquid wastes | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4627924A | Process and apparatus for the recovery of energy from an ozone production unit | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4304671A | Apparatus and process for separating emulsions by coalescence | Performing Operations; Transporting | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.