| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 10/04/1977 | US4052313 Material recovery systems |
| 10/04/1977 | US4052302 Process of forming catalytic surfaces for wet oxidation reactions |
| 10/04/1977 | US4052301 Process for purifying waste water |
| 10/04/1977 | US4052259 Manufacture and use of water-soluble auxiliary agents based on polyaminoamides for the production of paper |
| 10/04/1977 | US4052258 Cellulosic pulp |
| 09/27/1977 | US4051316 Removal of heavy metal ions from aqueous solutions with insoluble crosslinked-starch-xanthates |
| 09/27/1977 | US4051230 Porous membrane impregnated with organic chelating extractant, regeneration of chelating agent and release of metal cation by acid |
| 09/27/1977 | US4051065 Apparatus for dissolving water soluble polymers and gums in water |
| 09/27/1977 | US4051034 System for water disinfection |
| 09/27/1977 | US4051028 Process for purifying water |
| 09/27/1977 | US4051027 Adding hydrogen peroxide |
| 09/27/1977 | US4051026 Recovery of silver from silver-containing solutions |
| 09/27/1977 | US4051001 Process for regenerating etching solution |
| 09/27/1977 | US4050907 Organic waste treating and conversion system |
| 09/20/1977 | US4049807 2-Amino-1,3-thiazines their use and preparation |
| 09/20/1977 | US4049787 Process for separating sulphur in the form of hydrogen sulphide from clarified green liquor obtained from the combustion of waste liquor |
| 09/20/1977 | US4049552 Ozone generating system |
| 09/20/1977 | US4049548 Water treatment |
| 09/20/1977 | US4049546 Decolorization of effluents from pulp mills |
| 09/20/1977 | US4049545 Adding an alkaline coagulant to kill nitrifying bacteria, then an acidifying precipitating agent to cause aggregation of suspended solids |
| 09/20/1977 | US4049531 Water treatment |
| 09/20/1977 | US4049512 Cathode structure for electrolytic apparatus employing impellers |
| 09/20/1977 | US4049502 Method of and apparatus for distilling of liquids |
| 09/20/1977 | US4049156 Thermally-responsive liquid dispenser |
| 09/13/1977 | US4048283 Removal of heavy metals from aqueous solutions |
| 09/13/1977 | US4048264 Polymeric phosphoramides |
| 09/13/1977 | US4048240 Method of oxidizing or bleaching a contaminant in a non-aqueous fluid |
| 09/13/1977 | US4048044 Water-purifying apparatus |
| 09/13/1977 | US4048038 Electroflocculation cell |
| 09/13/1977 | US4048032 Electrolytic purification of aqueous liquids in the presence of silver ions |
| 09/13/1977 | US4048031 Method and apparatus for purifying emulsions and contaminated water with electolysis |
| 09/13/1977 | US4048030 Electrolytic cell for treatment of water |
| 09/13/1977 | US4048028 Sorbent particulate material and manufacture thereof |
| 09/06/1977 | US4046693 Scum skimmer apparatus |
| 09/06/1977 | US4046688 Using strong acid andor base ion exchange resin |
| 09/06/1977 | US4046687 Or bismuth from an aqueous solutionusing salt or ester of phosphoric acid |
| 09/06/1977 | US4046686 Reverse osmosis treatment of battery waste |
| 09/06/1977 | US4046684 Process for the treatment of a colloidal suspension |
| 09/06/1977 | US4046683 Water clarification |
| 09/06/1977 | US4046664 Metallic filament electrode |
| 09/06/1977 | US4046663 Carbon fiber electrode |
| 09/06/1977 | US4046655 Process for electrolytically purifying a photographic developer waste solution |
| 09/06/1977 | US4046640 Power generation and potable water recovery from salinous water |
| 09/06/1977 | US4046639 Power generation and potable water recovery from salinous water |
| 09/06/1977 | US4046534 Method for recovering fresh water from brine |
| 08/30/1977 | US4045553 Method of treating silver impregnated activated carbon |
| 08/30/1977 | US4045355 Clarification plant |
| 08/30/1977 | US4045347 System for pollution suppression |
| 08/30/1977 | US4045341 Method for the disposal of waste water containing ammonium ions, sulfate ions and organic substances |
| 08/30/1977 | US4045339 Waste treatment of fluoroborate solutions |
| 08/30/1977 | US4045338 Method of removing scale-forming substances from hot water system |
| 08/30/1977 | US4045336 Purification |
| 08/30/1977 | US4045326 Suspended solids extraction system and method |
| 08/30/1977 | US4045314 Using electrolytically produced hydrogen gas as fuel |
| 08/30/1977 | US4045171 Precipitating excess dye with group ia or iia halides or sulfates |
| 08/30/1977 | US4044696 Sewage disposal plant with evaporation/incineration means |
| 08/23/1977 | US4044111 Method of treating calcium nitrate contained in denitration waste liquid |
| 08/23/1977 | US4043932 Water sterilizing agent |
| 08/23/1977 | US4043920 Skimmer for square settling tanks |
| 08/23/1977 | US4043913 Device for sterilizing swimming-pool water |
| 08/23/1977 | US4043911 Sterilization of holding tanks and toilet bowls by quaternary compounds |
| 08/23/1977 | US4043910 Removal of phosphorous from waste water |
| 08/23/1977 | US4043908 Process for cleaning of a dispersion of dispersed particles |
| 08/23/1977 | US4043904 Waste water treatment method |
| 08/23/1977 | US4043771 Method of and apparatus for the dissolution of gases in liquids |
| 08/23/1977 | US4043047 Process and apparatus for the treatment of water-containing substances and application of this method for the preparation of pasteurized dried sludge |
| 08/16/1977 | US4042509 Water treatment system |
| 08/16/1977 | US4042502 Detoxification of cyanides and cyanide-containing solutions |
| 08/16/1977 | US4042501 Purification of iron containing acidic solutions |
| 08/16/1977 | US4042498 Separation of organic compounds by adsorption processes |
| 08/16/1977 | US4042495 Microorganisms which metabolize hydrocarbons |
| 08/16/1977 | US4041981 Ejector assembly |
| 08/09/1977 | US4041006 Preparing oil-dispersed polyvinyl imidazoline by in situ reaction of polyacrylonitrile and ethylene diamine |
| 08/09/1977 | US4040982 Ozonization catalyst |
| 08/09/1977 | US4040977 Haloacetamide or thiocyanoacetamide-alcohol-formaldehyde condensates |
| 08/09/1977 | US4040962 Apparatus for feeding chemicals to a liquid stream |
| 08/09/1977 | US4040955 Flocculation, recycling |
| 08/09/1977 | US4040954 Control of flocculant addition in sedimentation apparatus |
| 08/09/1977 | US4040920 Chromium(vi)-containing; adding ferrous nitrate or chloride, neutralization with sodium hydroxide |
| 08/09/1977 | US4040834 Regeneration of photographic processing solutions |
| 08/09/1977 | US4040515 Chemical dispensing apparatus |
| 08/09/1977 | US4040256 Flume mixer |
| 08/02/1977 | US4039884 Discharge lamp for the disactivation of micro-organisms |
| 08/02/1977 | US4039649 Process for removing sulfur from waste waters containing sulfuric acid |
| 08/02/1977 | US4039485 Ion exchange of metals from aqueous solutions using compositions of synthetic resins reacted with polyisocyanurate salts |
| 08/02/1977 | US4039483 Method of producing an ion exchanger by reacting unsaturated vulcanized or powdered rubbers with iodine isocyanate and then introducing ion exchange groups by further reaction |
| 08/02/1977 | US4039468 Phosphoric acid ester solvent |
| 08/02/1977 | US4039447 Ferromagnetic powder |
| 08/02/1977 | US4039446 Pollution control, carbon disulfide, amino resins |
| 08/02/1977 | US4039444 Water purification device |
| 08/02/1977 | US4039443 Condensate purification process |
| 08/02/1977 | US4039442 Ion-exchange process for desalting water and subsequent regeneration of the ion exchangers |
| 08/02/1977 | US4039439 Hydrogen bubbles |
| 07/26/1977 | US4038419 Enzymatic clarification of liquids |
| 07/26/1977 | US4038377 Removal of selenium from urethane solutions |
| 07/26/1977 | US4038365 Filtration |
| 07/26/1977 | US4038318 Water clarifiers, deemulsifiers |
| 07/26/1977 | US4038183 Flocculation process |
| 07/26/1977 | US4038180 Process of dewatering sewage sludge |
| 07/26/1977 | US4038163 Water purification |