| Patents for C02F 7 - Aeration of stretches of water (3,263) |
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| 04/21/1987 | US4659485 Method and apparatus for aerating flowing water raceways |
| 03/26/1987 | WO1987001690A1 Method and device for the oxygen enrichment of waters |
| 03/25/1987 | CN86201442U Jet nozzle for jet stream areation |
| 02/25/1987 | CN85204336U Helical lobe gasing type oxygen enhancement device |
| 12/24/1986 | CN85102953A Aeration devices in the water |
| 11/20/1986 | WO1986006712A1 Process for introducing oxygen into water and device for implementing the process |
| 10/22/1986 | CN85204400U Jet type surface aeration apparatus |
| 07/23/1986 | CN85108749A 改进的废水处理系统 Improved wastewater treatment system |
| 06/10/1986 | CA1205929A1 Apparatus for aerating water bodies or wastewater |
| 05/06/1986 | US4587064 Marine bays |
| 12/27/1985 | EP0165445A1 Apparatus for gas dispersion in stretches of water |
| 12/18/1985 | EP0165228A2 Apparatus for the aeration of flowing media |
| 12/11/1985 | EP0163821A1 Apparatus for the aeration of waste water basins and ponds |
| 10/29/1985 | US4549997 Device for increasing the oxygen concentration in a subsurface stratum of a thermally stratified body of water |
| 05/29/1985 | EP0142720A2 Aeration plant for large stretches of water |
| 05/09/1985 | WO1985001887A1 Aerator |
| 12/18/1984 | US4488508 Aeration/circulation method and apparatus utilizing low pressure air |
| 12/05/1984 | EP0127600A1 A device for increasing the oxygen concentration in a subsurface stratum of a thermally stratified body of water |
| 11/13/1984 | US4482510 Self-propelled jet aerator |
| 10/24/1984 | EP0122506A1 Device for blowing a gas into a liquid |
| 10/02/1984 | US4474713 Year-round aeration of lagoons, ponds and small lakes |
| 06/19/1984 | CA1169593A1 Procedure for improving the ecological state of a thermally and/or chemically stratified water basin |
| 05/15/1984 | US4448685 Aerating apparatus utilizing rotating impeller vane |
| 04/26/1984 | WO1984001591A1 System for purifying water area |
| 03/13/1984 | US4436675 Furifiers arranged according to different depths of region |
| 10/13/1983 | WO1983003437A1 Purifying breakwater |
| 10/11/1983 | US4409107 Method and apparatus for aerating bodies of water |
| 09/01/1983 | WO1983002970A1 System for removing contaminants from water area |
| 02/23/1983 | EP0072388A1 Method and apparatus for the removal or partial removal of impurities present in flowing water with a falling gradient |
| 11/16/1982 | CA1135883A1 Method of treating water |
| 10/20/1982 | EP0062848A1 Method and apparatus for the sanification of surface waters |
| 09/21/1982 | US4350648 Floating aerator |
| 09/21/1982 | US4350589 Floating jet aerator |
| 08/31/1982 | US4347143 Apparatus and process for purifying polluted water contained in natural or artificial pools by direct injection of oxygen |
| 04/27/1982 | CA1122726A1 Lagoon barrier |
| 03/31/1982 | EP0048257A1 Procedure for impriving the ecological state of a thermally and/or chemically stratified water basin |
| 01/27/1982 | EP0044382A1 Floating apparatus for water purification |
| 12/29/1981 | US4308138 To simultaneously aerate, and disperse a treating agent |
| 12/29/1981 | US4308137 Water aeration and circulation apparatus |
| 12/15/1981 | US4305828 Method of introducing oxygen into water and container for the performance of such method |
| 10/01/1981 | WO1981002731A1 Procedure for improving the ecological state of a thermally and/or chemically stratified water basin |
| 07/28/1981 | US4280911 Propelled-type aeration of wastes |
| 05/19/1981 | US4268398 Sludge agitating method |
| 01/07/1981 | EP0020388A1 Method for treating water |
| 10/21/1980 | US4229302 Waste treatment apparatus with floating platform |
| 10/07/1980 | US4226719 Treating device for large bodies of water |
| 08/05/1980 | US4216091 Water aerator |
| 07/29/1980 | US4215082 Device for injecting a gas into a liquid |
| 03/20/1980 | WO1980000435A1 Method for treating water |
| 03/18/1980 | US4193951 Water aerating device |
| 03/04/1980 | US4191479 Sludge agitating apparatus |
| 02/26/1980 | US4190619 Liquid aerating rotor assembly |
| 12/18/1979 | US4179243 Floatation pump device |
| 06/26/1979 | CA1057431A1 Rotary surface aerators |
| 03/20/1979 | US4144841 Aeration and filtration apparatus |
| 12/19/1978 | CA1044696A1 Device for injecting gas in a liquid_ |
| 08/15/1978 | US4107240 Method and device for lake restoration by oxygen-enriching of the water |
| 11/29/1977 | US4060574 Device for lake restoration by oxygen-enriching of the water |
| 07/05/1977 | US4034030 Oxygenation impregnation apparatus |
| 01/25/1977 | US4005015 Aerating apparatus |
| 06/01/1976 | US3960718 Method and apparatus for treating liquid sewage and waste |
| 05/11/1976 | US3956432 Aeration technology |
| 05/11/1976 | US3956124 Of thermally stratified water |