| Patents for C02F 7 - Aeration of stretches of water (3,263) |
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| 05/14/2003 | CN1417137A Foaming aerating disc |
| 05/13/2003 | CA2292113C Enhanced gas dissolution |
| 05/08/2003 | US20030085176 Allows micro, medium and macro-scale treatment throughout urban canalized watercourses, affecting all watercourses of region in continuous and complementary manner; successive and intercalated aeration stages |
| 05/07/2003 | CN2549001Y Rotary joint |
| 05/07/2003 | CN1415562A Improved technique of aeration and oxygenation for sewage |
| 04/29/2003 | US6554259 High dissolved oxygen mixer-digester |
| 04/23/2003 | CN2546440Y Multiblade aerator |
| 04/03/2003 | WO2003026783A1 Liquid current generating device |
| 03/18/2003 | US6533496 Destratifying a large body of stagnant water such as a dam, lake or water storage reservoir |
| 03/13/2003 | WO2003020646A1 Device and method for purifying water |
| 03/12/2003 | CN2539571Y Double-faced aeration spray head |
| 03/05/2003 | CN2538796Y Sterilizing autocontrolled high-micropore aerator |
| 02/26/2003 | CN1398797A Quick installation of aerator in aerator tank |
| 02/19/2003 | CN2536583Y Cyclonic sand settling devices |
| 02/19/2003 | CN2536582Y Flexible aeration tubes |
| 02/13/2003 | WO2003011774A1 Aerator for bodies of water |
| 02/06/2003 | WO2002083579A3 Method and plant for relieving bodies of water above all of sludges excessively covering the beds thereof |
| 02/05/2003 | CN2534178Y Improved diaphragm type microporous aeration device |
| 01/29/2003 | CN1394193A Apparatus and method for improving water quality of reservoir |
| 01/22/2003 | CN2532076Y Power diffusion vortex mixing aerator |
| 01/16/2003 | US20030010727 Method of controlling contaminant flow into water reservoir |
| 01/15/2003 | CN2530950Y Streamline suspension aerator |
| 01/09/2003 | US20030006512 Diffuser saddle connection |
| 01/08/2003 | CN2530057Y Body building aeration pump of sewage treatment system |
| 01/01/2003 | CN2528982Y Impeller |
| 12/31/2002 | US6499727 Internal drive aerator for body of liquids |
| 12/19/2002 | US20020190401 Internal drive aerator for body of liquids |
| 12/18/2002 | EP1266867A2 Process of environmental recovery in urban regions |
| 12/12/2002 | WO2002098801A1 Method of controlling contaminant flow into water reservoir |
| 12/12/2002 | WO2002098544A1 Floating fine-bubble aeration system |
| 12/12/2002 | CA2449697A1 Method of controlling contaminant flow into water reservoir |
| 12/11/2002 | CN2525083Y Device for forced aeration to improve water quality |
| 12/11/2002 | CN2525082Y Expanding micro hole diaphragm aerator |
| 12/04/2002 | EP1262460A2 Method for introducing fluid charged with gas, in particular with oxygen, in deeper regions of an accumulation of fluid, in particular of a lake, and apparatus for carrying out this method |
| 12/04/2002 | CN2523762Y Oxygen supplying water purifying pump |
| 12/04/2002 | CN2523761Y Pipe oxygen supplying aerator |
| 12/04/2002 | CN2523760Y Anti-spattering cover of aerating rotary discs and brushes in oxidation ditch |
| 12/04/2002 | CN2523758Y Liftable pipe style micro-porous aerator |
| 11/27/2002 | CN2522415Y Apparatus for making waterfall and flying stream |
| 11/13/2002 | CN1378874A Nozzle-type dual-channel oxygen-enriching machine |
| 11/12/2002 | US6478964 Floating fine-bubble aeration system |
| 11/07/2002 | DE10120111A1 Delivery of oxygen into the depths of water, and other liquids, uses a free stream of a gas-rich fluid passed into the lower levels |
| 10/31/2002 | US20020158013 High dissolved oxygen mixer-digester method |
| 10/30/2002 | CN2518854Y 曝气器 Aerator |
| 10/30/2002 | CN2518574Y Changeable microporous aerated pipe |
| 10/28/2002 | EP1105584A4 Water circulation |
| 10/25/2002 | EP1183093A4 Counterbalanced dual submarine-type liquid mixer pairs |
| 10/24/2002 | WO2002083579A2 Method and plant for relieving bodies of water above all of sludges excessively covering the beds thereof |
| 10/23/2002 | CN2517738Y Flow pushing aeration disk |
| 10/17/2002 | DE10118241A1 Stagnant lagoon floor water cleaned by water flow driven by oxygenated water bearing active feed of selected micro-organisms |
| 10/16/2002 | CN2516543Y Micropore aerater with air diversion device |
| 10/16/2002 | CN2516232Y Double-screw-type automatic aerator |
| 10/10/2002 | WO2002078825A1 Floating paddlewheel aerator |
| 09/25/2002 | CN1370747A Automatic hydraulic inflating stirrer and the method of utilizing it in purifying water |
| 09/18/2002 | CN2511677Y Aerating apapratus with horizontal shaft with driving end bearing seat |
| 09/18/2002 | CN2511676Y Effective aerating apparatus |
| 09/18/2002 | CN2511675Y Wind power device for deep aeration for treatment sewage |
| 09/11/2002 | CN2510490Y Unpowered aerating device |
| 09/11/2002 | CN2510489Y Aerating machine |
| 09/11/2002 | CN2510488Y Silicon-carbide ceramic microporous aerating device |
| 09/11/2002 | CN2510486Y Sewage treatment apparatus |
| 09/04/2002 | CN2509182Y Nested pipe aeration apparatus |
| 09/04/2002 | CN2509181Y Improved aeration disc |
| 09/04/2002 | CN2509180Y Expanding microhole type round pipe aerator |
| 09/04/2002 | CN2509179Y Aeration plate double non-return apparatus |
| 09/03/2002 | US6444176 Apparatus for purification of water area |
| 08/28/2002 | CN2507856Y Sewage aeration device |
| 08/27/2002 | US6439854 Method and pump for impelling water in waters |
| 08/22/2002 | US20020113013 Aeration system for wastewater |
| 08/15/2002 | WO2002062455A1 Method and device for introducing a gas into a body of water |
| 08/08/2002 | US20020104807 Solar aeration system |
| 08/08/2002 | DE10105118A1 Verfahren und Vorrichtung zum Einleiten eines Gases in ein Gewässer Method and device for introducing a gas into a body of water |
| 08/07/2002 | CN1362378A Wave oxygenating and aerating unit |
| 08/07/2002 | CN1362377A Propulsive wave eliminating and oxygenating unit |
| 08/07/2002 | CN1362376A Floated wave eliminating and oxygenating unit |
| 08/06/2002 | US6428711 Purification method by mixing/diffusion of closed water zone and mixing/diffusion apparatus |
| 08/06/2002 | US6428693 Temporary silt guard for sewer inlet |
| 08/01/2002 | DE10104329A1 Schwimmfähiges Gerät zum Vermischen von Gas und Flüssigkeit Floatable unit for mixing gas and liquid |
| 07/31/2002 | EP0873278B1 Method for adding oxygen to water |
| 07/24/2002 | CN2501877Y Wind power water aerating machine |
| 07/18/2002 | WO2001097958A9 Fine air bubble generator and fine air bubble generating device with the generator |
| 07/11/2002 | WO2002053505A1 Device and method for of water purification |
| 07/09/2002 | US6416674 Silt-guard apparatus for use in a detention pond |
| 06/20/2002 | WO2002048056A1 Device for oxygen enrichment of the bottom layers of stagnant bodies of water |
| 06/20/2002 | WO2002048051A1 Purifying device |
| 06/20/2002 | CA2430154A1 Purifying device |
| 06/19/2002 | CN2495641Y Floating and fountain like aerator |
| 06/13/2002 | US20020070164 For aerating waste water in sewage works |
| 06/12/2002 | EP0733024B1 Regenerator for oxidation and cleaning of a liquid |
| 06/12/2002 | CN2494826Y Overlying pushing flow type water treating device |
| 06/04/2002 | US6398194 Water pressure-type aeration device |
| 05/28/2002 | CA2145031C Method and apparatus for in situ water purification including sludge reduction within water bodies by biofiltration and for hypolimnetic aeration of lakes |
| 05/22/2002 | CN1349912A Water quality protecting method |
| 05/16/2002 | WO2002038510A1 Improved aerator and mixer |
| 05/15/2002 | CN2491447Y Underwater aerator |
| 05/15/2002 | CN2491446Y Self-sucking underwater diversion aerating and stirring machine |
| 05/15/2002 | CN1348927A Wind power aeration and air compression apparatus for sewage purifying treatment |
| 05/10/2002 | WO2002036505A1 Apparatus and method for improving water quality of reservoir |
| 04/17/2002 | CN1344689A Efficient biochemical treamtent method and equipment for domestic sewage |
| 04/10/2002 | CN2485303Y Improved tubular membrane aerator |