| 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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| 05/02/1978 | US4087371 Method of preventing incrustation on heated surfaces, and composition for the practice of the method |
| 05/02/1978 | US4087360 Method of inhibiting scale formation |
| 04/25/1978 | US4086181 Control of corrosion and scale in circulating water systems by means of partial esters of polyfunctional organic acids |
| 04/25/1978 | US4086146 Water treating process |
| 04/18/1978 | US4085194 Absorption in sea water, formation of sulfites, oxidation to sulfates |
| 04/18/1978 | US4085134 Amino-phosphonic-sulfonic acids |
| 04/18/1978 | US4085060 Sequestering compositions |
| 04/18/1978 | US4085045 Low molecular weight hydrolyzed polyacrylamide used as a scale inhibitor in water systems |
| 04/18/1978 | US4084950 Use of polyquaternary ammonium methylene phosphonates as microbiocides |
| 04/04/1978 | US4082773 Antifibrillatory agents, disinfectants, water softeners |
| 03/21/1978 | US4080375 Scale inhibitors, chelating agents |
| 03/21/1978 | US4080289 Apparatus for treating waste water or solution |
| 03/14/1978 | US4079018 Catalyzed hydrazine compositions and methods of their use |
| 03/14/1978 | US4079006 Methods of scale inhibition |
| 02/28/1978 | US4076843 5,6,7,8-Tetrahydronaphthalene hypotensive agents |
| 02/21/1978 | US4075243 Polyquaternary ammonium methylene phosphonates |
| 02/14/1978 | US4073712 Electrostatic water treatment |
| 02/07/1978 | US4072607 Acrylamide-acrylic acid copolymer |
| 01/31/1978 | US4071464 Uses of methylene phosphonates of poly-diepoxidized polyalkylene polyamines |
| 01/31/1978 | US4070992 Boiler blow down controller |
| 01/03/1978 | US4066687 Sequestrants |
| 12/27/1977 | US4065607 Terpolymers of maleic anhydride and their use as scale control agents |
| 12/20/1977 | US4064164 Sequestering agents, anticaries agents, calcium or phosphate metabolism abnormalities |
| 12/20/1977 | US4064044 Process for chelating and inhibiting scale in aqueous systems |
| 12/13/1977 | US4062796 Methods for inhibiting scale formation |
| 12/06/1977 | US4061695 Phosphate esters |
| 12/06/1977 | US4061589 1,3,-triazine-4,6-diketo or 4,6-dithio-2-dithio-ammonium phosphamateon |
| 11/22/1977 | US4059513 Treatment of water to remove certain ions therefrom |
| 11/08/1977 | US4057511 Process for preventing corrosion and the formation of scale in water circulating system |
| 10/25/1977 | US4055591 Phosphonomethyl compounds |
| 10/25/1977 | US4055467 Rhozyme hp-150 |
| 10/18/1977 | US4054598 Sequestering agents |
| 10/18/1977 | US4054526 Pressurized water treatment bottle |
| 10/18/1977 | US4054175 Geothermal power system |
| 10/04/1977 | US4052160 Corrosion inhibitors |
| 10/04/1977 | US4051901 Process for water treatment in mobility controlled caustic flooding process |
| 09/27/1977 | US4051029 Process of inhibiting scale formation with mixtures of thio-, oxygen or thio-oxygen phosphates and pyrophosphates |
| 09/13/1977 | US4048264 Polymeric phosphoramides |
| 09/13/1977 | US4048066 Method of inhibiting scale |
| 09/13/1977 | US4048065 Control of corrosion and scale in circulating water systems by means of partial esters of polyfunctional organic acids |
| 09/06/1977 | US4046707 Treatment of aqueous systems |
| 08/30/1977 | US4045253 A base, an oxygen containing gas, hydrazine, an iron complexing agent |
| 08/30/1977 | US4045244 Detaching hydrated slime on supports with urea and ethanolamine, amine-epoxy reaction products, or derivatives |
| 08/23/1977 | US4043930 1,4-Bis-formyl cyclohexane polycarboxylic acids, process of making same, and compositions and methods of using same |
| 08/16/1977 | US4042324 Process for inhibiting the corrosions and deposition of boiler scale in water-conveying systems |
| 08/16/1977 | US4042323 Process of inhibiting corrosion of metal in an aqueous environment with mixtures of thio-, oxygen and thio- oxygen phosphates and pyrophosphates |
| 08/09/1977 | US4041110 Useful in preventing scale formation |
| 08/02/1977 | US4039459 Wells, imino-dimethylene phosphonic acid, dicarboxylic acid or ester |
| 07/19/1977 | US4036749 Adding magnesium hydroxide to precipitate calcium carbonate then calcium hydroxide to precipitate magnesium hydroxide |
| 07/12/1977 | US4035412 Scale inhibitors, chelating agents |
| 06/28/1977 | US4032460 Inhibition of scale deposition in high temperature wells |
| 06/21/1977 | US4031138 Stable substituted acrylamides or methacrylamides |
| 06/21/1977 | US4031025 Chitosan derivative, sequestering agents for heavy metals |
| 06/21/1977 | US4030548 Economically dissolving barium sulfate scale with a chelating agent |
| 06/14/1977 | US4029697 N-acyl-1-amino alkane-1,1-diphosphonic acid compounds, process of making same, and compositions for and method of using same |
| 06/14/1977 | US4029696 Sequesterants |
| 06/14/1977 | US4029577 Polymers for use in water treatment |
| 06/07/1977 | US4028239 Process for preventing lime deposits in a humidifier |
| 05/31/1977 | US4026815 Method for preventing corrosion in water-carrying systems |
| 05/10/1977 | US4022711 Catalyzed hydrazine compound corrosion inhibiting composition containing a complex of metal salt and amino derivative of carboxylic acid, and a quinone compound |
| 05/03/1977 | US4021376 Detergent compositions with nonphosphate builders containing two or more carboxyl groups |
| 04/26/1977 | US4020101 α-Alkyl-phosphonosuccinic acid compounds and sequestering compositions containing them |
| 04/26/1977 | US4020091 Chelation |
| 04/26/1977 | US4020000 Control of corrosion and scale in circulating water systems by means of partial esters of polyfunctional organic acids |
| 04/19/1977 | US4018702 For protecting metals in aqueous systems |
| 04/12/1977 | US4017391 Water treatment system |
| 04/12/1977 | US4017370 Method for prevention of fouling by marine growth and corrosion utilizing technetium-99 |
| 03/29/1977 | US4014814 Corrosion inhibitor composition |
| 03/15/1977 | US4012440 Methylene phosphonates of oxyalkylated polyalkylene polyamines and uses therefor |
| 03/08/1977 | US4011171 Boiler treatment using amines and organophosphonate materials |
| 03/01/1977 | US4010110 Process for dispersing contaminants in circulating water or polar organic liquid system |
| 02/15/1977 | US4008164 Acrylic acid-methyl acrylate copolymer |
| 01/25/1977 | US4005160 From a nitrile and phosphite ester, hydrogenation |
| 01/18/1977 | US4003842 Corrosion and scale inhibitors for industrial recirculating cooling water systems |
| 01/11/1977 | US4002676 Hydroxyethercarboxylic acids |
| 01/04/1977 | US4001134 Scale inhibiting process |
| 12/28/1976 | US4000083 Sequestering agents |
| 12/07/1976 | US3996062 Polyphosphonic acids |
| 11/16/1976 | US3992294 Ureaphosphonates |
| 11/02/1976 | US3989637 Corrosion inhibitors and processes for using the same |
| 11/02/1976 | US3989636 Copolymer of glycine or aspartic acid and epihalohydrin |
| 10/26/1976 | US3988443 Sequestering agents for calcium ions |
| 10/26/1976 | US3988422 Method of treating converter gas |
| 10/26/1976 | US3988253 Using a water-soluble substituted taurine |
| 10/12/1976 | US3985671 Polyaminoalkylenephosphonate and a polyquarternary ammonium chloride |
| 10/05/1976 | US3984543 Therapeutic methods employing cyclic aminophosphonic acids |
| 09/21/1976 | US3981779 Inhibition of scale on saline water heat exchange surfaces with iminodiacetic acid compounds |
| 09/14/1976 | US3980578 Metal sequestering method and composition using α,α'-carboxyalkoxy succinic acid compounds |
| 09/07/1976 | US3979443 Process for the preparation of esters of maleic acid with monohydric alcohols |
| 09/07/1976 | US3979315 Method for treating scale |
| 08/24/1976 | US3976589 Diphosphonated ethoxylated tertiary amine |
| 08/24/1976 | US3976569 Precipitation of calcium carbonate |
| 08/24/1976 | US3976445 Recarbonation process and apparatus |
| 08/17/1976 | US3975282 Sulfonated ethoxylated alcohol |
| 08/17/1976 | US3975281 Alkylbenzenesulfonic acid or salts |
| 08/10/1976 | US3974209 Water treatment, complex metal ions |
| 08/10/1976 | US3974090 Imino alkylimino phosphonates and method for preparing and using same |
| 08/10/1976 | US3974083 Control of corrosion and scale in circulating water systems by means of partial esters of polyfunctional organic acids |
| 08/03/1976 | US3972981 Method of preventing gypsum scale formation in phosphoric acid plant filters |
| 07/20/1976 | US3970698 Hydroxy ether carboxylates |