| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 01/17/1990 | EP0351148A1 Apparatus for treating a fluid |
| 01/17/1990 | EP0351143A2 Evaporating and cooling liquid |
| 01/17/1990 | EP0350994A2 Removal of cadmium from phosphoric acid-containing solutions |
| 01/17/1990 | EP0350884A2 Water filtering device with a filter element |
| 01/17/1990 | EP0350536A1 Use of a stainless steel sponge to reduce scale in a water reservoir and suchlike |
| 01/17/1990 | EP0147464B1 Chemically active aqueous solution and solid substance containing ferrous ion |
| 01/17/1990 | CN2051055U Spraying type magnetized water tooth brush |
| 01/17/1990 | CN1038800A Internal high speed cleaning apparatus |
| 01/17/1990 | CN1006459B Purificn. method for distilled panax water |
| 01/16/1990 | US4894166 Method for cleaning oil-contaminated water in a swimming or bathing area |
| 01/16/1990 | US4894162 Treatment of volatile organic substances at waste water treatment plants |
| 01/16/1990 | US4894161 Flocculation, cultures |
| 01/16/1990 | US4894154 Individual portable water-treatment device |
| 01/16/1990 | US4894123 High efficiency water distiller |
| 01/16/1990 | US4894119 Retention and/or drainage and/or dewatering aid |
| 01/16/1990 | US4893422 Steam iron with water softening facility |
| 01/11/1990 | WO1990000157A1 Process for decomposition of metal-cyano complexes using microbial enzymes |
| 01/11/1990 | WO1990000156A1 Method of extracting heavy metal ions from sewage |
| 01/11/1990 | WO1990000155A1 Ultra-pure water supply piping arrangement apparatus |
| 01/11/1990 | WO1990000085A1 Photodegradation of metal chelate complexes |
| 01/11/1990 | DE3823127A1 Vorrichtung und verfahren zur reinigung von abwasser Apparatus and method for cleaning of waste water |
| 01/11/1990 | DE3822953A1 Process for regenerating an iron- and/or zinc-containing hydrochloric acid bath |
| 01/10/1990 | EP0350466A2 A method and apparatus for the cold sterilization of surgery instruments, in particular dental surgery instruments |
| 01/10/1990 | EP0350279A2 Treatment of water by nanofiltration |
| 01/10/1990 | EP0350248A1 Apparatus for treating photographic process waste liquor and method therefor |
| 01/10/1990 | EP0350174A2 Treatment of aqueous dispersions |
| 01/10/1990 | EP0349727A2 Filter device |
| 01/10/1990 | EP0349708A1 Process for water purification |
| 01/10/1990 | EP0349671A1 Process for separating heavy metals from waste water by sulfide precipitation using calcium polysulfide |
| 01/10/1990 | EP0349552A1 Improvements in and relating to water conditioning |
| 01/10/1990 | CN2050722U Extracting apparatus for soup fat used in kitchen |
| 01/10/1990 | CN1038589A Distillation apparatus and method |
| 01/09/1990 | US4892916 Polymeric thickeners and their production |
| 01/09/1990 | US4892712 Fluid flow through a matrix coated with a photoreactive semiconductor, pollution control |
| 01/09/1990 | US4892688 Arrangement for expelling light volatile contaminants from liquids |
| 01/09/1990 | US4892664 Decontamination of sites where organic compound contaminants endanger the water supply |
| 01/09/1990 | US4892660 Semipermeable membrane, polysulfones |
| 01/09/1990 | US4892655 Arrangement for water treatment |
| 01/09/1990 | US4892583 1-Methyl-3,5,7-triaza-1-azoniatricyclodecane triiodide, a method of preparation, and its use in the control of microorganisms in aqueous systems |
| 01/09/1990 | US4892570 Water precipitator apparatus |
| 01/09/1990 | US4892567 Simultaneous removal of mercury and water from fluids |
| 01/09/1990 | CA1264233A1 Method of treating wastewater sludge |
| 01/09/1990 | CA1264232A1 Method of treating wastewater sludge |
| 01/03/1990 | EP0349363A1 Article and process for absorbing polluting products |
| 01/03/1990 | EP0349348A1 Process for decomposition of metal-cyano complexes using microbial enzymes |
| 01/03/1990 | EP0349315A1 Filter cartridges and filter assemblies |
| 01/03/1990 | EP0349102A1 Removing residual alkali metal ions from demineralized water |
| 01/03/1990 | EP0349035A2 Medium temperature hydrolysis reactor |
| 01/03/1990 | EP0348551A1 Device and method for the modification of activity of microorganisms contained in liquids without the addition of chemical reagents |
| 01/03/1990 | CN2050422U Bicirculating sulphurous sodium sulfate deoxidizing apparatus |
| 01/03/1990 | CN2050421U Level wave plates assembly for treating wastewater of containing oil |
| 01/02/1990 | US4891422 Compositions of inorganic-organic alloy with high nitrogen content polymers and their manufacture |
| 01/02/1990 | US4891415 Continuous processing |
| 01/02/1990 | US4891177 Water-flood surfactant |
| 01/02/1990 | US4891141 Oxygen scavenger for boiler water and method of use |
| 01/02/1990 | US4891140 Energy efficient |
| 01/02/1990 | US4891138 On basis of specific gravities |
| 01/02/1990 | US4891116 Method and apparatus for electrochemically decomposing inorganic materials contained in an aqueous radioactive waste solution |
| 12/28/1989 | WO1989012607A1 Water soluble organic ammonium perhalides |
| 12/28/1989 | WO1989012606A1 Improvements in or relating to the sanitation of swimming pool water |
| 12/28/1989 | WO1989012605A1 Dosing device for liquid additives, in particular high viscosity additives |
| 12/28/1989 | WO1989012604A1 Method for the control of biofouling in recirculating water systems |
| 12/28/1989 | DE3815729A1 Central control valve constructed with two balls |
| 12/27/1989 | EP0348339A1 Proportioning arrangement for liquid additives, particularly those with a high viscosity |
| 12/27/1989 | EP0347965A2 A method and a device for purifying dredgings or ground contaminated with polluants |
| 12/27/1989 | EP0347813A1 Gas assisted flotation process and apparatus |
| 12/27/1989 | EP0347595A1 Process for running a waste water plant |
| 12/27/1989 | EP0347577A1 Process for treating ion-exchanging masses, particularly for regenerating them after the softening and desalting of aqueous solutions |
| 12/27/1989 | EP0146591B1 Hydrophobic composite, method and composition |
| 12/27/1989 | CN2050037U Fast-speed magnetization mineral water-making device |
| 12/27/1989 | CN1038314A Environmental pollution-free composite electrode for sodium hypochlorite generator |
| 12/27/1989 | CN1038257A Equiptment and process for small-scale sewage treatment |
| 12/27/1989 | CN1038256A Equipment and method for treating oily liq. |
| 12/27/1989 | CN1006199B Process for the decolorization |
| 12/26/1989 | US4889725 Adding calcium fluoride |
| 12/26/1989 | US4889641 Dropping blocks of sodium hydroxide or carbonate into body of water; sinking to embed sediment; slow release, ion exchang-ing |
| 12/26/1989 | US4889640 Method and mixture for treating hazardous wastes |
| 12/26/1989 | US4889633 Process for treating aqueous fluids containing organic compounds and salts of polyvalent inorganic acids |
| 12/26/1989 | US4889041 Electric appliance for making hot beverages |
| 12/21/1989 | DE3820744A1 Apparatus for producing and utilising condensed water |
| 12/21/1989 | DE3820142A1 Fresh fat separator |
| 12/20/1989 | EP0347244A2 Distillation apparatus and method |
| 12/20/1989 | CN1038077A Technology for silver recovery from silver contg. waste liquor and apparatus thereof |
| 12/20/1989 | CN1038076A Oil contg. sewage treatment device |
| 12/20/1989 | CN1038075A Process for treatment of mn contg. waste water by extraction |
| 12/20/1989 | CN1038031A Method for preventing fouling in water circulation system |
| 12/19/1989 | US4888396 Novel cationic acrylamide polymers and processes for their preparation |
| 12/19/1989 | US4888118 Water purification process and apparatus employing nylon 4 |
| 12/19/1989 | US4888113 Magnetic water treatment device |
| 12/19/1989 | US4888101 System for and method of photocatalytically modifying a chemical composition and method of constructing a panel utilized in the system and the method |
| 12/19/1989 | US4888098 Passing current through electrochemical cell containing electrode coated with ion exchange material to replace ionic species |
| 12/19/1989 | US4888097 Distillation type |
| 12/14/1989 | WO1989012029A1 A process for removing nitrogen compounds from raw water |
| 12/14/1989 | WO1989011900A1 Purification of effluent from wood pulp bleach plant |
| 12/14/1989 | WO1989009641A3 Multistep method for separating organic compounds from a solution |
| 12/14/1989 | DE3820110A1 Process for dewatering sewage sludges |
| 12/14/1989 | DE3819124A1 Apparatus for the distillation of liquids |
| 12/14/1989 | DE3819000A1 Bag of a teabag type for eliminating pollutants |
| 12/13/1989 | EP0346282A1 Process for the batched disinfection of sewage sludge |
| 12/13/1989 | EP0346159A1 Method of coagulating sludge |