| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
|---|
| 09/26/1990 | EP0388990A2 Method and articles employing ion exchange material |
| 09/26/1990 | EP0388859A1 Method for treating muddy water |
| 09/26/1990 | CN2062727U Domestic generator of high-quality mineral water |
| 09/26/1990 | CN2062632U Magnetizer for bath water |
| 09/26/1990 | CN1045598A Purification vector agent composite and preparation method and utilization thereof |
| 09/26/1990 | CN1045568A Utilization of sulphuric waste water in leather-making |
| 09/25/1990 | USRE33355 Homo-or copolymers of an n-alkyl or n,n-alkylene (meth) acrylamide and a metal halide or perchlorate; humidity control; antifogging agents |
| 09/25/1990 | US4959157 Wastewater disinfection with a combination of biocides |
| 09/25/1990 | US4959155 Method for the purification of fluids such as water, aqueous fluids and fuel fluids |
| 09/25/1990 | US4959154 Contacting with wood chips |
| 09/25/1990 | US4959145 Gas baffle device for on-site waste disposal systems |
| 09/25/1990 | US4959142 Water treating apparatus |
| 09/25/1990 | US4959135 Polyalkylamine complexes for ligand extraction and generation |
| 09/25/1990 | US4959127 System for desalinization of saltwater |
| 09/25/1990 | US4959122 Evaporation, precipitation, thermal decomposition |
| 09/25/1990 | CA1274628A1 Pulp decolor process |
| 09/25/1990 | CA1274443A1 Synergistic biocide of 2-(p-hydroxyphenol)-glyoxylohy droximoyl chloride and 2,2-dibromo-3- nitrilopropionamide |
| 09/25/1990 | CA1274441A1 Hydrated calcium hypochlorite tablets containing lime compounds as lubricants and solubility retardants |
| 09/24/1990 | WO1990011264A2 Process for manufacturing pelletized materials for use in chemical reactions in industry or agriculture |
| 09/24/1990 | CA2029887A1 Process for manufacturing pelletized materials for use in chemical reactions in industry or agriculture |
| 09/23/1990 | CA2012201A1 Method for treating muddy water |
| 09/22/1990 | CA2012734A1 Liquid skimming apparatus |
| 09/20/1990 | WO1990010838A1 Vacuum freezing process and vapor processing unit |
| 09/20/1990 | WO1990010734A1 A submerged electrolytic cell pool purifier |
| 09/20/1990 | WO1990010600A1 Process for biological removal of phosphates |
| 09/20/1990 | WO1990010598A1 An improved magnetic-field amplifier |
| 09/20/1990 | WO1990010597A1 Water purifying means |
| 09/20/1990 | DE4008112A1 Catalyst for binding oxygen dissolved in water or aq. soln. |
| 09/20/1990 | DE3908516A1 Photochemical wet combustion reactor |
| 09/20/1990 | DE3908222A1 Process and apparatus for conveying a suspension to a filter press |
| 09/20/1990 | DE3908054A1 Process for the preparation of a flocculant |
| 09/19/1990 | EP0388158A1 Composite filter apparatus and method for removing low concentrations of metal contaminants from water |
| 09/19/1990 | EP0388115A1 Controlling industrial slime |
| 09/19/1990 | EP0388066A1 Dispersed air flotation apparatus and method |
| 09/19/1990 | EP0387853A1 Process for elimination of arsenic and/or antimony from solutions containing arsenic and/or antimony as anionic fluorine complexes |
| 09/19/1990 | EP0387816A1 Catalyst for binding oxygen dissolved in water or aqueous solutions |
| 09/19/1990 | EP0387567A2 Amphoteric polyelectrolyte, method for production thereof, and organic sludge dehydrater |
| 09/19/1990 | EP0387390A1 Method and apparatus for purifying drinking water by solar light and heat |
| 09/19/1990 | CN2062330U Alternative magnetic field water magnetizing device |
| 09/19/1990 | CN2062329U Device for removing ion from water |
| 09/19/1990 | CN2062328U Double roll adjustable oil remover |
| 09/19/1990 | CN2062327U Powerless water supply device for purifying water |
| 09/19/1990 | CN1045360A Process for reclaiming ion-exchange resin used in preparing pure water |
| 09/18/1990 | US4957977 Modified n-vinylformamide-(meth)acrylonitrile copolymer, paper strength increaser, papermaking drainage and retention aid |
| 09/18/1990 | US4957634 Heavy metal recovery process |
| 09/18/1990 | US4957633 Floatation clarifying and flocculating/purification of liquid |
| 09/18/1990 | US4957626 Method and apparatus for treating water in beverage and ice machines |
| 09/18/1990 | US4957624 Method of and arrangement for purifying contaminated water |
| 09/18/1990 | US4957606 Separation of dissolved and undissolved substances from liquids using high energy discharge initiated shock waves |
| 09/18/1990 | US4957200 Water distillation apparatus |
| 09/17/1990 | CA2011657A1 Composite filter apparatus and method for removing low concentrations of metal contaminants from water |
| 09/13/1990 | DE3937689A1 Combined reactor for ion-exchange processes for e.g. deionised water - filtering and ion-exchange are carried out within single reactor vessel to reduce prodn. cost and maintenance |
| 09/13/1990 | DE3915308A1 Packed contra-flow stripping column - two separate stripping sections are used to reduce, cost of cleaning water contaminated with volatile substances |
| 09/13/1990 | CA2001539A1 Application of cellulase to control industrial slime |
| 09/13/1990 | CA2001538A1 Application of glucanase to control industrial slime |
| 09/12/1990 | EP0386838A1 Method for reducing industrial or urban effluent COD |
| 09/12/1990 | EP0386560A1 Process for the biological elimination of phosphates |
| 09/12/1990 | EP0386186A1 Rapidly mounted magnetic device for treating water. |
| 09/12/1990 | EP0386065A1 A method of removing organic substances from effluents from pulp and paper manufacturing processes |
| 09/12/1990 | EP0385972A1 Method for improving the utilization of polyelectrolytes in dewatering aqueous suspensions. |
| 09/12/1990 | CN2062012U De-aeration device for rh model boiler water supply |
| 09/12/1990 | CN2061933U Composite device for land oil/water separation |
| 09/12/1990 | CN1045255A Air oxidizing method for removing ferrous element from water solution and its products |
| 09/12/1990 | CN1045253A Zeolite of offretite family and process for manufacturing same |
| 09/12/1990 | CN1009547B Recovery technique of iron oxide red and ammonia sulphate from waste liquid of pickle |
| 09/12/1990 | CN1009546B Treatment of chlorhydric acid pickling waste containing iron |
| 09/12/1990 | CN1009528B Flocculent for purifying waste liquor of print and dye |
| 09/11/1990 | US4956754 For immersion in an aquarium |
| 09/11/1990 | US4956513 Washing with water, distillation |
| 09/11/1990 | US4956157 Process for separating salts in seawater |
| 09/11/1990 | US4956154 Selective removal of chromium, nickel, cobalt, copper and lead cations from aqueous effluent solutions |
| 09/11/1990 | US4956100 Water pollution, removing floating matter |
| 09/11/1990 | US4956098 Oxidation and photoxidation process |
| 09/11/1990 | US4956097 Decomposition of the metal without air, precipitation |
| 09/11/1990 | US4956095 Water or gas purification by bulk absorption |
| 09/11/1990 | US4956094 Water treatment, oxygen demand, sludge, aerobic process |
| 09/11/1990 | US4956093 Water treatment, active carbon, circulation, loops |
| 09/11/1990 | US4956092 Method for concentrating/dehydrating of sewage sludge |
| 09/11/1990 | US4956084 Simplified apparatus for intensified magnetic treatment of liquids |
| 09/11/1990 | US4956083 Water purification device |
| 09/11/1990 | US4956080 High pressure oxygen-saturated water treatment apparatus |
| 09/11/1990 | US4956071 Electrodeionization apparatus and module |
| 09/11/1990 | US4956057 Process for complete removal of nitrites and nitrates from an aqueous solution |
| 09/11/1990 | CA1273888A1 Flocculant for bitumen tailings |
| 09/10/1990 | WO1990010760A1 Method for treating human or animal dejections by means of micro-waves and devices for implementing such method |
| 09/10/1990 | CA2028099A1 Process for the microwave treatment of human or animal feces, and device for implementing said process |
| 09/10/1990 | CA2011869A1 Method for reducing industrial or urban effluent cod |
| 09/09/1990 | WO1990010603A1 Apparatus and method for stabilizing sludge |
| 09/09/1990 | CA2049057A1 Apparatus and method for stabilizing sludge |
| 09/08/1990 | WO1990010599A1 Apparatus and method for continuously removing oxygen from fluid streams |
| 09/07/1990 | WO1990010097A1 Water purifier |
| 09/07/1990 | WO1990009966A1 Treatment of activated sludge |
| 09/07/1990 | WO1990009836A1 Improvements in filtration |
| 09/07/1990 | CA2048621A1 Improvements in filtration |
| 09/06/1990 | DE3906781A1 Process for reducing the nitrite content and/or nitrate content in water to ammonium |
| 09/06/1990 | CA2007273A1 "p-xylylenediamide/diimide composite ro membranes" |
| 09/05/1990 | EP0385801A1 Biocidal compositions and treatments |
| 09/05/1990 | EP0385678A2 Transition metals as tracers of chemical treatment |
| 09/05/1990 | EP0385150A2 Method for controlling reservoir cleaning and emptying devices |
| 09/05/1990 | EP0385119A2 Mixture components separation and recovery process through evaporation |