| Patents for E03B 3 - Methods or installations for obtaining or collecting drinking water or tap water (5,213) |
|---|
| 12/15/1993 | CN2149425Y High-effiency well filtration sheets |
| 12/02/1993 | DE4217460A1 Rainwater-collecting equipment with hinging shutter - has pipe from downpipe to water collector forming overflow back into downpipe when collector is full |
| 11/30/1993 | US5266213 Cleaning halogenated contaminants from groundwater |
| 11/16/1993 | CA2068843A1 Water recovery apparatus called recupereau |
| 11/10/1993 | CN2145814Y Open type seam water filtering tube |
| 11/09/1993 | US5259203 Apparatus and method for extracting potable water from atmosphere |
| 11/09/1993 | US5259166 Roofing system for potable water |
| 11/02/1993 | US5257643 Dry hydrant |
| 10/27/1993 | EP0566978A2 Use of a copper-aluminium-zinc alloy as corrosion resistant material |
| 10/20/1993 | EP0565921A2 Rain water treating and conveying installation for use as industrial water or for treatment for the purpose of infiltration or inflow in receiving water |
| 10/20/1993 | CN2144122Y Automatic equipment for adding germicide at water outlet of deep well |
| 10/19/1993 | US5253954 Alternate intake pipe system to eliminate zebra mussel colonization |
| 10/17/1993 | CA2094091A1 In-situ restoration of contaminated soils and groundwater using calcium chloride |
| 10/14/1993 | DE4211601A1 Absorption well delivering leakage water into subsoil - has parts of filter tube above sump bottom forming solid tube and enclosed by additional replaceable filter |
| 09/29/1993 | EP0562301A1 Configuration method for water wells |
| 09/23/1993 | DE4307396A1 Method of lining of shaft with concrete sections - has sections cast in-situ in circular forms which are re-used as lower sections harden and are driven down |
| 09/23/1993 | DE4306421A1 Roof tile arrangement for water separating sloping roof - uses line of tiles to divert rain water into gutter or storage tank |
| 09/08/1993 | CN1075997A Producing technology for tile type adhesive gravel filter |
| 09/01/1993 | CN2141435Y Domestic two-purpose water-saving and storage device |
| 08/19/1993 | DE4204635A1 Rainwater collection and seepage disposal - involves barrel-like containers sunk in ground with rainwater seeping out of joints |
| 08/18/1993 | EP0555966A1 Fog water collecting device |
| 08/18/1993 | EP0555734A1 Device for cleaning ground water |
| 08/11/1993 | CN2139989Y Sand filter for oil, gas, water well |
| 08/10/1993 | US5234286 Underground water reservoir |
| 08/05/1993 | WO1993015281A1 Automatic rain water collection device on downpipe______________ |
| 08/05/1993 | CA2129020A1 Automatic rain water collection device on downpipe |
| 07/21/1993 | CN2138667Y Household automatic water collecting tank |
| 07/21/1993 | CN2138666Y Diaphragm pneumatic water storage tank of full automatic running water pump group |
| 07/14/1993 | CN1074269A Well screens and screen prepacks |
| 06/30/1993 | EP0548768A1 Method and device for influencing a liquid present in the soil |
| 06/24/1993 | WO1993012323A1 Well filter |
| 06/23/1993 | EP0547865A2 Well screen with prepacked screen element |
| 06/17/1993 | CA2085437A1 Well screens and screen prepacks |
| 06/15/1993 | US5218986 Pneumatically pressurized water pumping apparatus |
| 06/10/1993 | WO1993011310A1 Water storage fencing system |
| 06/02/1993 | CN2135022Y Domestic filtering water tank |
| 05/26/1993 | CN2134424Y Safety water elevating hook |
| 04/28/1993 | CN2130845Y Installation for closing or draining water in pond or reservoir |
| 04/28/1993 | CN2130844Y Anti-theft well cover |
| 04/22/1993 | DE4133531A1 Deep well water regeneration - has pulsed flow of medium through the filter w.r.t. pH values and filter resistance with independent action on separate sections |
| 04/20/1993 | US5203989 Portable air-water generator |
| 04/08/1993 | DE4132916A1 Up-wind power plant with solar collectors - and heat exchanger for mechanical energy and drinking water prodn. |
| 03/03/1993 | CN2127723Y Theft-proof cover for manholes |
| 03/02/1993 | US5190108 Method and apparatus for inhibiting biological fouling of water wells |
| 03/02/1993 | US5190102 Making prepack sleeve for well screen by making metal slivers of specified lengths, compressing in mold, sintering until slivers become tacky and bond to each other |
| 02/10/1993 | EP0527075A1 Water-intake, particularly for industrial installation |
| 02/10/1993 | EP0526448A1 Serpent sediment-sluicing system. |
| 02/04/1993 | DE4125453A1 Device for collecting and cleaning rain water - solid impurities are sepd. by reducing flow rate and/or coarse filtration in inlet section to flow equalisation channel |
| 12/30/1992 | CN2126256U Household running-water machine |
| 12/09/1992 | EP0517202A1 Device for diverting rainwater from a downpipe |
| 11/11/1992 | EP0345256B1 Process for making a well |
| 10/14/1992 | CN1065309A Method for tap water supply in rural area and related apparatus |
| 10/14/1992 | CN1018662B Improvement of water purification system |
| 10/07/1992 | CN2118089U Saw tooth shaped head part of obtaining water |
| 09/29/1992 | US5151175 System to automatically drain filter backwash water |
| 09/22/1992 | US5149446 Potable water generator |
| 09/15/1992 | US5147535 Arrangement for driving out of volatile impurities from ground water using vibrations |
| 09/09/1992 | CN1064330A Floating water intake |
| 09/02/1992 | CN2114679U Pool settling matter suction remover |
| 08/26/1992 | EP0500270A2 Floating water-intake |
| 08/20/1992 | WO1992013623A1 Portable air-water generator |
| 07/01/1992 | CN1062392A Water well with water-drawing apparatus |
| 06/04/1992 | DE4037899A1 Cleaning device for well shaft - includes perforated or slotted well tube with sealed treatment chamber and pressure pump |
| 05/27/1992 | CN2105518U Civial deep well |
| 05/21/1992 | DE4036733A1 Fresh water prepn. from sea water - by using the sea water as a coolant and continuously withdrawing water vapour from the unit |
| 05/19/1992 | US5113889 Floating intake for transport of liquid from a fixed depth below the surface of a reservoir |
| 04/29/1992 | EP0483110A2 Method and device for making a well |
| 04/21/1992 | US5106512 Portable air-water generator |
| 03/31/1992 | US5099917 Water well construction |
| 03/24/1992 | US5097914 Method and device for producing unadulterated water samples in drilling a well |
| 01/29/1992 | EP0468608A1 Draining element for the lining of wells and process for its manufacture |
| 01/29/1992 | CN1058248A Method for supplement water source of motor-pumped well |
| 01/21/1992 | US5082013 Firefighting water delivery system and method |
| 01/02/1992 | DE4019142A1 Rain water unit for feeding user points - incorporates pressureless feed arrangement, with overflow and lowest fill level indicator |
| 01/01/1992 | CN2091896U Automatic water supply means for civil use |
| 12/25/1991 | CN2091312U Pole joint valve open close container |
| 12/25/1991 | CN2091311U Pumping bucket |
| 12/17/1991 | CA1293185C Compound filters |
| 12/03/1991 | US5069286 Anionic polymer sequesterant |
| 11/28/1991 | DE4017013A1 Equipment for cleaning well shafts - involves staged frame moving along shaft walls with horizontal dividers forming sealed chambers |
| 11/20/1991 | CN2089027U Water supply well without wellpipe with cone positioning pump base |
| 11/19/1991 | CA1292330C Method for improving the phosphorus elimination capacity of a lake |
| 11/14/1991 | DE4014804A1 Appts. for filtering and collection rain-water from house roofs - in which tilting distributor directs initial flow of water to drain and then diverts flow automatically to filter and storage tank |
| 10/28/1991 | WO1991016981A1 Serpent sediment-sluicing system |
| 10/15/1991 | US5057346 Floatable pad with weather precipitation collector and/or removable hook |
| 10/08/1991 | US5054553 Method of underground-water exploration during well-construction by hydraulic-system drilling |
| 09/19/1991 | DE4008453A1 Automatic closure for rainwater downpipe valve - involves float in reception tank connected to release device with closure weight |
| 09/18/1991 | CN1013979B Bore screen |
| 09/10/1991 | US5046892 Apertured pipe segment |
| 08/29/1991 | DE4006253A1 Rainwater storage tank in ground - consists of vertical series of joggled concrete rings with polyethylene lining protected from them by intermediate layer of e.g. glass mat |
| 08/22/1991 | DE4004939A1 Well level measurement arrangement - has head station at top of well pipe connected to level sensor via cable |
| 07/31/1991 | CN2081829U Self-controlled water vat |
| 07/11/1991 | DE3943040A1 Drain pipe for rain-water - has groove to separate initial flow of dirty water from subsequent flow of clean water |
| 06/12/1991 | EP0431384A1 Apparatus for the expulsion of volatile pollutants from ground water |
| 05/29/1991 | WO1991008176A1 Cleaning halogenated contaminants from groundwater |
| 05/29/1991 | DE4036598A1 Rain-water collection and distribution - from portable tank surmounted by tray holding pump, filter and auxiliary mains supply pipe |
| 05/22/1991 | CN2077453U Water feeder using air pressure for accumulating energy |
| 05/08/1991 | DE3936977A1 Cooling device for extracting humidity from air - uses Peltier elements between hot and cold plates supported above condensate collection tank |
| 04/03/1991 | CN2074359U Water supply apparatus |
| 03/28/1991 | DE3931011A1 Well shaft filter cleaning for below ground filters - has tubes sunk parallel to shaft connected in pump circuit for forced cleaning with provision for adding materials to flow |