| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
|---|
| 04/18/1990 | EP0364423A1 A method for purifying contaminated aqueous solutions |
| 04/18/1990 | EP0364188A1 Waste treatment of metal containing solutions |
| 04/18/1990 | EP0364111A1 Water purifier |
| 04/18/1990 | EP0363854A2 Culture fluid concentrator |
| 04/18/1990 | EP0363838A2 Method and apparatus for obtaining pure water and products dissolved in water |
| 04/18/1990 | EP0363704A1 Process for the removal of hydroxyl ammonium salts from waste waters |
| 04/18/1990 | EP0363696A1 Pharmaceutical preparation and process for its manufacture |
| 04/18/1990 | EP0363612A1 Process for removal of waste waters with a high concentration of ammoniacal nitrogen |
| 04/18/1990 | EP0148380B1 Electroimpulse process, and device for treating material with it |
| 04/18/1990 | CN1041756A One-pass centrifugal separating technology and apparatus for recovering glutamic acid from waste liquid of sodium glutamate |
| 04/18/1990 | CN1041341A Treatment of aqueous systems |
| 04/18/1990 | CN1041339A Oxidation method for reclaiming waste liquor of copper sulfate |
| 04/18/1990 | CN1041338A Process for removing sulfides |
| 04/18/1990 | CN1041337A Household multifunctional water-drinking device |
| 04/18/1990 | CN1007621B Method and equipment for membrane cleaning under reduced pressure |
| 04/17/1990 | US4918123 Inverse emulsion process for preparing hydrophobe-containing polymers |
| 04/17/1990 | US4917868 Controlled and uniform dissolving rate for chemical |
| 04/17/1990 | US4917806 Method of and apparatus for controlling pH and electrical conductivity of water using ion exchange resin |
| 04/17/1990 | US4917803 Sodium or potassium aluminate and amino vinyl polymer to water |
| 04/17/1990 | US4917802 Method for treating waste water |
| 04/17/1990 | US4917794 Regeneration sensing device |
| 04/17/1990 | US4917785 Liquid processing system involving high-energy discharge |
| 04/17/1990 | US4917782 Electrolytic liquid purification process and apparatus |
| 04/17/1990 | US4917771 Distilling apparatus |
| 04/17/1990 | US4917770 Distillation apparatus |
| 04/17/1990 | CA2000733A1 Culture fluid concentrator |
| 04/14/1990 | CA2000037A1 Removing hazardous contaminants from water |
| 04/12/1990 | DE3921645A1 Disposal esp. of mixed inorganic waste |
| 04/12/1990 | DE3904127C1 Process and device for the biochemical purification of waste waters |
| 04/11/1990 | EP0363316A1 Biocides to protect materials and for water systems |
| 04/11/1990 | EP0363258A1 A method for treating organic waste material and an oxidation catalyst/cocatalyst composition useful therefor |
| 04/11/1990 | EP0363024A1 Process for the production of high molecular weight copolymers of diallyl dimethyl ammonium chloride and acrylamide in an aqueous dispersed phase |
| 04/11/1990 | EP0362978A1 Process for treating caustic cyanide metal wastes |
| 04/11/1990 | EP0362934A1 Treatment of the effluents from the production of epoxy resins |
| 04/11/1990 | EP0362713A1 Process for the removal of sulfides |
| 04/11/1990 | EP0362681A2 Method for the disposal of inorganic residues |
| 04/11/1990 | EP0362429A1 Process for oxidizing a low-valent sulfur compound |
| 04/11/1990 | EP0362233A1 Process for separating the substances contained in a liquid and device for implementing the process |
| 04/11/1990 | EP0250410B1 A method of removing macromolecular organic dissolved and colloidal material from wood processing industry effluents |
| 04/10/1990 | US4916164 Biocidal compositions and use thereof containing a synergistic mixture of 2-(decylthio)ethanamine hydrochloride and B-bromo-B-nitrostyrene |
| 04/10/1990 | US4916159 Bactericides |
| 04/10/1990 | US4916158 Biocidal compositions and use thereof containing a synergistic mixture of 2-(decylthio)ethanamine hydrochloride and methylene bis(thiocyanate) |
| 04/10/1990 | US4916123 Biocidal compositions and use thereof containing a synergistic mixture of 2-(decylthio) ethanamine hydrochloride and N-tributyltetradecyl phosphonium chloride |
| 04/10/1990 | US4916095 Modified clay sorbents |
| 04/10/1990 | US4915955 Storage stable, clear concentrate for mixing with hydrogen peroxide |
| 04/10/1990 | US4915919 Recovery of germanium from aqueous solutions by solvent extraction |
| 04/10/1990 | US4915849 Process for the treatment of effluents containing cyanide and other oxidizable substances |
| 04/10/1990 | US4915846 Water clarification |
| 04/10/1990 | US4915844 Continuous feeding waste solution through membrane-type separator and centrifugal separator |
| 04/10/1990 | US4915842 Simple system to decompose pesticide waste water |
| 04/10/1990 | US4915840 Sewage treatment; pollution control; hydrolyzing, degestion |
| 04/10/1990 | CA1267745A1 Stable tannin based polymer compound |
| 04/10/1990 | CA1267540A1 Evaporative heat exchanger |
| 04/08/1990 | CA2000230A1 Process and apparatus for purifying water and recovering substances dissolved in water |
| 04/05/1990 | WO1990003496A1 Steam boiler system |
| 04/05/1990 | WO1990003333A1 Water purifying system |
| 04/05/1990 | WO1990003332A1 A process for disposing of used oil/water emulsions |
| 04/05/1990 | WO1990003208A1 Method of freezing and separation |
| 04/05/1990 | WO1990003104A2 Method and plant for treating organically charged sewage |
| 04/05/1990 | DE3932979A1 Disposal of waste water from cellulose pulp factory - by precipitating organic chlorine cpds. as lime sludge, biologically clearing water, and burning combined sludges |
| 04/05/1990 | DE3904998C1 Floatation apparatus |
| 04/05/1990 | DE3833039A1 Process and apparatus for the purification of phosphate- and nitrogen-containing waste water |
| 04/04/1990 | EP0362164A2 Method and apparatus for treating water using electrolytic ozone |
| 04/04/1990 | EP0361930A2 Cleaning method for water containing vessels and systems |
| 04/04/1990 | EP0361581A1 Process for the purification of aqueous acid effluents containing halogenated compounds |
| 04/04/1990 | EP0361579A1 Fluid purification device |
| 04/04/1990 | EP0361248A1 Method of treating cooling water |
| 04/04/1990 | EP0361201A1 Process to dispose of spent oil-water emulsions |
| 04/04/1990 | EP0361163A1 Beta-bromo-beta-nitrostyrene for preserving aqueous systems |
| 04/04/1990 | EP0360989A1 Process for the chemically oxidative treatment of water containing toxic and/or non or slowly biodegradable substances |
| 04/04/1990 | EP0360941A2 Decompostion of volatile organic halogenated compounds contained in gases and aqueous solutions |
| 04/04/1990 | EP0360834A1 Method of and arrangement for purifying contaminated water |
| 04/04/1990 | EP0360794A1 Method of preparing a mixture of chlorine containing substances including chlorine dioxide. |
| 04/04/1990 | EP0122270B1 Separation of multi-phase systems |
| 04/04/1990 | CN2055497U 强力磁化杯 Strong magnetic cup |
| 04/04/1990 | CN2055496U Double-room non-top-pressure countercurrent regenerated ion exchanger |
| 04/04/1990 | CN2055495U 污水处理装置 Sewage treatment plant |
| 04/04/1990 | CN2055494U Portable water treatment apparatus |
| 04/04/1990 | CN1040968A Process of photocatalysis treatment of waste water |
| 04/03/1990 | US4914132 Biocidal compositions and use thereof containing a synergistic mixute of 2-(decylthio)ethanamine hydrochloride and n-alkyl dimethyl benzyl ammonium chloride |
| 04/03/1990 | US4914130 Biocidal compositions and use thereof containing a synergistic mixture of 2-(decylthio)ethanamine hydrochloride and dodecylguanidine |
| 04/03/1990 | US4914118 Biocidal compositions and use thereof containing a synergistic mixture of 2-(decylthio)ethanamine hydrochloride and a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one |
| 04/03/1990 | US4913842 Contacting condensed liquid with catalyst containing copper oxide, zinc, aluminum or chromium oxide and oxide of group 8 metal |
| 04/03/1990 | US4913835 Novel compositions and method for neutralization and solidification of hazardous alkali spills |
| 04/03/1990 | US4913827 Process for purifying and de-pyrogenating water |
| 04/03/1990 | US4913826 Fat, oil and grease flotation treatment of poultry and food industry waste water utilizing hydrogen peroxide |
| 04/03/1990 | US4913825 Method for controlling overspray in paint spray booths |
| 04/03/1990 | US4913820 Contacting mixture of sewage and activated sludge with polyvinylpyridine, forming floc, separating by gravity |
| 04/03/1990 | US4913808 Subcompact interchangeable cartridge drinking water purification system |
| 04/03/1990 | US4913585 Method of treating solids containing waste fluid |
| 03/29/1990 | DE3931746A1 Pre-discharge monitoring of neutralised combustion fume condensate - with unsatisfactory sensor results automatically stopping combustion |
| 03/29/1990 | DE3832207A1 Process for operating electrochemical cells equipped with solid electrolytes using unsoftened, undemineralised feed water |
| 03/28/1990 | EP0360745A1 Treatment of aqueous systems |
| 03/28/1990 | EP0360612A1 Water purifying system |
| 03/28/1990 | EP0360093A2 Process for separating salts by electrodialysis |
| 03/28/1990 | EP0359969A1 Filter for the purification of fluids |
| 03/28/1990 | CN2055063U Sterilization tap filters |
| 03/28/1990 | CN1040826A Transition metal recovery |
| 03/28/1990 | CN1040774A Polychlorinated ferric sulfate water purifying agent and its manufacturing method |
| 03/28/1990 | CN1040773A Improved photocatalytic waste water treating method |