| Patents for C02F 5 - Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents (8,632) |
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| 03/25/1980 | US4195138 Controlling water hardness by removing multivalent ions |
| 03/11/1980 | US4192744 With dicarboxy substituted tertiary amide as flocculant for iron oxides |
| 03/04/1980 | CA1072879A1 Process for water treatment in mobility controlled caustic flooding process |
| 02/19/1980 | US4189383 Novel compositions of matter for use in the treatment of aqueous systems |
| 02/12/1980 | US4188291 Treatment of industrial waste water |
| 02/12/1980 | CA1071394A1 Process for inhibiting corrosion of metals in aqueous systems |
| 02/05/1980 | US4187245 Hydroxypropylene-amino-phosphonic-sulfonic acids |
| 01/15/1980 | CA1069800A1 Method of dispersing calcium carbonate |
| 01/01/1980 | US4181806 Antisludging agents, antiscaling agents |
| 01/01/1980 | US4181536 Ammonium chloride, sludge from cuprous aluminum tetrahalide and aromatic hydrocarbon |
| 01/01/1980 | CA1069015A Enzymatic dispersion of biological slimes |
| 12/25/1979 | US4180547 Process for recovery of chemicals from saline water |
| 12/18/1979 | US4179522 Certain complex salts of mono carboxylic acids used as preservatives |
| 12/11/1979 | US4178354 Alkali metal aluminosilicophosphates |
| 11/27/1979 | US4176059 Consisting of a water soluble molybdate, a cationic or non-ionic surfactant, a polyphosphate and an azole |
| 11/20/1979 | US4175100 Preparation of anionic polymers for use as scale inhibitors and anti-precipitants |
| 11/20/1979 | CA1066617A1 Liquid composition containing formic acid |
| 11/13/1979 | US4174291 Crystallization seed-containing composition |
| 10/30/1979 | US4172787 Reaction of α-phosphorus containing carboxylic acids with phosphorous acid to prepare scale and corrosion inhibitors |
| 10/30/1979 | US4172786 Ozonation of cooling tower waters |
| 10/23/1979 | US4172032 Polyphosphate-based industrial cooling water treatment |
| 10/16/1979 | US4171292 Compositions for treating aqueous mediums containing magnesium sulfite trihydrate |
| 10/16/1979 | US4171277 Granulated composition comprising a polymer phosphate and an alkali metal aluminum silicate, process of making and method of using same |
| 10/02/1979 | US4169934 Copolymers of keto dicarboxylates |
| 09/25/1979 | CA1062983A1 Copolymers for the control of the formation and deposition of materials in aqueous mediums |
| 09/18/1979 | US4168230 Calcium carbonate |
| 09/11/1979 | CA1062278A1 N-phosphono-methylene-monoaminoalkane mono and polyphosphonic acids or n-phosphono-methylene- diamino-alkane polyphosphonic acids and a process for their production |
| 09/11/1979 | CA1062196A1 Water conditioning apparatus |
| 08/28/1979 | US4166041 Process for magnesium scale control using mixtures of polycationic and polyanionic polymers |
| 08/28/1979 | US4166040 Compositions comprising mixtures of polycationic and polyanionic polymers as magnesium scale control agents |
| 08/14/1979 | US4164574 Use of polyquaternary ammonium methylene phosphonates as microbiocides |
| 08/14/1979 | US4164521 Mixtures of polycationic and polyanionic polymers for scale control |
| 08/07/1979 | US4163733 Dimethylaminomethylenebis/phosphonic acid/and a polymer of an acrylic carboxylic acid |
| 08/07/1979 | CA1059870A1 Composition and method for treating scale |
| 08/07/1979 | CA1059869A1 Chelating agents |
| 07/24/1979 | CA1058854A1 Composition and method of removing scale from oil wells |
| 07/17/1979 | CA1058474A1 Process for inhibiting the corrosion and deposition of boiler scale in water-conveying systems |
| 07/10/1979 | CA1058047A1 Scale control agents |
| 07/03/1979 | US4159946 Antiscaling agents, antideposit agents |
| 06/12/1979 | CA1056521A1 Process for slow softening water |
| 06/05/1979 | US4157364 Process for preparing dimethylaminomethylenebis(phosphonic acid) |
| 05/29/1979 | US4156789 5,6,7,8-Tetrahydro-1,6,7-naphthalenetriols |
| 05/22/1979 | US4155869 Phosphate esters of oxyalkylated beta-amino lower-alkyl carbamates as scale inhibitors |
| 05/16/1979 | EP0001811A1 N-sulfohydroxyalkane-aminoalkanephosphonic acids and their salts, process for their preparation and their use as complex-forming agent |
| 05/08/1979 | US4153556 Method and apparatus for conditioning demineralized water |
| 05/08/1979 | US4153547 Use of acidified copper sulfate in hydrogen sulfide removal |
| 05/02/1979 | EP0001584A1 Hydroxydiphosphonic acids, process for their preparation and their use as complex-forming agents |
| 04/17/1979 | US4149969 Process and composition for inhibiting corrosion of metal parts in water systems |
| 04/17/1979 | CA1052919A1 Determination of sodium form water softener breakthrough |
| 04/10/1979 | US4148728 Scale-inhibiting compositions for aqueous solutions |
| 04/03/1979 | US4147647 Dissolving gypsum using an alkali metal maleate salt |
| 04/03/1979 | US4147627 Process for scale control using mixtures of polycationic and polyanionic polymers |
| 04/03/1979 | CA1052020A1 Removing and preventing mud and silt in cooling systems |
| 03/13/1979 | US4144185 Method and composition for removing calcium sulfate scale deposits from surfaces |
| 03/13/1979 | CA1050386A1 Method for inhibiting the deposition of scale from saline water |
| 03/07/1979 | EP0000930A1 N-Carboxyalkane-aminoalkane-diphosphonic acids, N-carboxyalkane-azacycloalkane-diphosphonic acids and N-carboxyalkane-aminoarylkane diphosphonic acids, process for their preparation and their use as sequestering agents |
| 02/20/1979 | US4140676 Process for preparing polymeric acetal carboxylate salts |
| 02/06/1979 | US4138431 For open air cooling systems |
| 02/06/1979 | US4138353 Corrosion inhibiting composition and process of using same |
| 01/24/1979 | EP0000337A1 Use of telomers formed from mercaptans and acrylic compounds as scale and/or corrosion inhibitors |
| 01/23/1979 | US4136152 Method for treating aqueous mediums |
| 01/09/1979 | CA1046080A1 Partial esters of hydroxy polycarboxylic acids |
| 12/20/1978 | EP0000061A1 Derivatives of carboxylic acid that contain phosphorus, process for their preparation and their utilisation |
| 12/05/1978 | US4128492 Process of producing a cyclohexane-1,2,3,4-tetracarboxylic acid-containing scale inhibitor |
| 12/05/1978 | CA1043653A1 Method of inhibiting the precipitation of scale-forming salts |
| 11/28/1978 | US4127483 Telomeric dicarboxy alkane phosphonic acid |
| 11/21/1978 | US4126549 Treatment of water |
| 11/07/1978 | CA1041755A1 Waterflood process using alkoxylated low molecular weight acrylic acid polymers as scale inhibitors |
| 10/31/1978 | US4123338 Method for prevention of fouling and corrosion utilizing technetium-99 |
| 10/31/1978 | CA1041699A1 Compositions and process for scale inhibition |
| 10/24/1978 | CA1041115A1 Imino alkylimino phosphonates and method for preparing and using same |
| 10/03/1978 | US4118318 Gas scrubber scale and deposit control |
| 10/03/1978 | CA1039613A1 Method and composition of inhibiting scale |
| 09/26/1978 | US4116990 Of non-alkali metal ions with phosphorus chelating compound |
| 09/26/1978 | US4116834 Apparatus for increasing the pH of waste water |
| 09/19/1978 | US4115307 Phosphate composition |
| 09/12/1978 | US4113834 Calcining |
| 09/05/1978 | US4111804 Novel compositions of matter for use in the treatment of aqueous systems |
| 09/05/1978 | US4111759 Process for separating ammonia and acid gases from waste waters containing fixed ammonia salts |
| 08/29/1978 | CA1037339A1 Bisulfite terminated oligomers to prevent scale |
| 08/15/1978 | US4107064 Carboxyalkoxysuccinic acid and-or salts thereof with a surfactant |
| 08/08/1978 | US4105573 Alkyl phosphonate soil-release agent, nonionic surfactant |
| 08/08/1978 | US4105551 Treatment of aqueous systems |
| 08/01/1978 | US4104131 Process for separating ammonia and acid gases from waste waters containing fixed ammonia salts |
| 07/25/1978 | US4102707 Removal of microbiological deposits |
| 07/11/1978 | US4100231 Process for making phosphate esters and products thereof |
| 07/11/1978 | US4100067 Method for sequestering metal ions |
| 07/04/1978 | US4098849 Alpha-amino phosphonic acids |
| 07/04/1978 | US4098814 N-phosphono methylene amino alkane phosphonic acid compounds, process of producing same, and method and compositions of using same |
| 07/04/1978 | US4098714 Water softening materials |
| 06/20/1978 | US4096081 Water softeners |
| 06/13/1978 | US4094782 N-acyl-1-amino alkane-1,1-diphosphonic acid compounds and compositions for and method of using same |
| 06/13/1978 | US4094778 Calcium and magnesium cations |
| 06/06/1978 | US4093580 An oligomer or a copolymer of a 1-olefin and an unsaturated anhydride |
| 06/06/1978 | US4093557 Process for inhibiting corrosion of metals in aqueous systems |
| 05/30/1978 | US4092244 Adding a alkyl polyethoxy compound containing a free carboxylate, sulfonate or phosphonate group |
| 05/23/1978 | US4090959 Process for sequestering metal ions |
| 05/16/1978 | US4089893 2,2,2-Tris(hydroxymethyl)ethylphosponic acid and method for its preparation |
| 05/16/1978 | US4089796 Treatment of water or aqueous systems |
| 05/09/1978 | US4088574 Employing methylene phosphonates of oxyalkylated polyalkylene polyamines in chelation and/or scale inhibition |