Class / Patent application number | Description | Number of patent applications / Date published |
210687000 | Calcium or magnesium (e.g., hardness, water softening, etc.) | 18 |
20080296230 | Method for removing a liquid from a container and device therefor - Provided is a method for removing a liquid, in particular a supernatant, from a container with a sample, by creating an opening in a container with a sample consisting of solid constituents and a liquid, and subsequently centrifuging the container so as to cause the liquid to flow out of the container through the created opening. Also provided is a device for making a container suitable for use in the method. | 12-04-2008 |
20100059446 | MATERIAL COMPRISING POLYAZACYCLOALKANES, GRAFTED ON POLYPROPYLENE FIBRES, ITS PROCESS OF PREPARATION, AND PROCESS FOR REMOVING METAL CATIONS FROM A LIQUID - Material composed of a polyazacycloalkane grafted on polypropylene fibres. | 03-11-2010 |
20100294724 | SPA CALCIUM REMOVAL METHODS AND APPARATUS - Strong acid cation resins used alone or in combination with zeolite-based ion exchange resins are encapsulated in various water permeable polymer fabric bags of various geometries and thicknesses to reduce the calcium hardness levels during swimming pool and spa water fills. The resin bags are strategically placed in the pool or spa to allow water under pressure to flow through the ion exchange media to exchange calcium or magnesium ions with sodium or other harmless cations. | 11-25-2010 |
20110089116 | METHOD FOR IMPROVED REMOVAL OF CATIONS BY MEANS OF CHELATING RESINS - The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having aminomethylphosphonic acid groups and iminodimethylphosphonic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, and a markedly lengthened loading duration of the chelating resin, to the chelating exchangers themselves, and also to uses thereof. | 04-21-2011 |
20110120953 | WATER TREATMENT SYSTEM AND METHOD - A method and apparatus for producing purified water. Treated water may be provided for domestic use wherein the water may be treated by removing selected dissolved species while retaining properties that may improve the properties or aesthetics of the water. | 05-26-2011 |
20110132844 | METHOD FOR IMPROVED REMOVAL OF CATIONS BY MEANS OF CHELATING RESINS - The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having acetic acid and/or iminodiacetic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, to the chelating exchangers themselves, and also to uses thereof. | 06-09-2011 |
20110139720 | INTERRUPTION OF MEASURED VARIABLE ANALYSES IN AN AUTOMATIC WATER SOFTENING SYSTEM WHEN DEFINED OPERATING SITUATIONS ARE PRESENT - A method for operating a water softening system ( | 06-16-2011 |
20110168637 | SYSTEM AND METHOD FOR CONTROLLING MULTIPLE SIZED WATER SOFTENING TANKS - A water softening system including a first treatment tank having a first water capacity, a second treatment tank in parallel with the first treatment tank and having a second water capacity that is less than the first water capacity, a flow meter connected to the first and second treatment tanks, the flow meter configured to determine a demand flow rate of water entering the system and a controller in communication with the flow meter, the controller configured to direct the water into the first treatment tank when the demand flow rate is greater than a designated flow rate, and to direct the water into the second treatment tank when the demand flow rate is equal to or less than the designated flow rate. | 07-14-2011 |
20120160774 | DETERGENT BUILDERS - A detergent builder composition includes a (co)polymer of acrylic acid. The acrylic acid copolymers may be selected from a copolymer of acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid, and a copolymer of acrylic acid and hydroxyethyl methacrylate. Also disclosed are processes for removing calcium and/or magnesium ions with the detergent builder composition. | 06-28-2012 |
20120312749 | Water Softener System and Method - A water treatment system is provided that includes a brine tank and a resin tank and a control valve in operative connection with the tanks. The control valve includes a piston that is operative by a first motor to move between different positions to change the flow of water through orifices in the control valve, and a brine valve that is operative by a second motor to open and close the passage between the brine tank and resin tank. The second motor operates the brine valve independently of the operation of the piston by the first motor. | 12-13-2012 |
20120312750 | Water Softener System and Method - A water treatment system is provided that includes a control valve. The control valve includes a plurality of orifices and a piston. Movement of the piston is operative to change the flow of water through the orifices. A brine tank is in operative connection with the control valve. The brine tank includes a pump. A resin tank is in operative connection with the control valve and includes an ion exchange resin bed. At least one controller is operatively configured to cause the pump to operate to push brine from the brine tank through the control valve and into the resin tank. | 12-13-2012 |
20120312751 | Water Softener System and Method - A water treatment system is provided that includes first and second water treatment control valves. Each control valve includes orifices and a piston. Movement of the piston is operative to change the flow of water through the orifices. The inlet and outlet ports of the second control valve are reversed relative to locations of the inlet and outlet ports on the first control valve. Each control valve is in operative connection with a respective brine tank and a resin tank. A manifold is in operative connection with the inlet and outlet ports of the first and second control valves. The manifold includes an inlet and an outlet port and a three way valve. A controller is configured to selectively operate the three way valve to direct water from the inlet port of the manifold to one of the input ports of the first and second control valves. | 12-13-2012 |
20130105399 | POLYMER-ENCAPSULATED LIQUID EXCHANGE MEDIA | 05-02-2013 |
20130200002 | Calcium Removal Method - In accordance with the present invention, there is provided a calcium removal method capable of reducing operation cost. A solution L | 08-08-2013 |
20140021139 | METHOD FOR PRODUCING AN ORGANIC-INORGANIC HYBRID SORBENT BY IMPREGNATING AN OXIDE INTO NANOPORES OF ACTIVATED CARBONE AND USE THEREOF IN WATER TREATMENT - This invention relates to a method of manufacturing an organic-inorganic composite hybrid adsorbent by impregnating activated carbon nanopores with an oxide and a water treatment method using the same, and particularly, to an adsorbent including a porous adsorbent and ferrihydrite, goethite, hematite or magnetite incorporated into the porous adsorbent, and a manufacturing method thereof. | 01-23-2014 |
20140138321 | WATER SOFTENING DEVICE - A system comprises an input, a brine chamber, a water softening chamber, and an output. One or more valves are configured to selectively prevent fluid communication of water from the input into the brine chamber; and to selectively permit communication of brine from the brine chamber to the water softening chamber when water is not being communicated through the input. The output is configured to output water softened in the water softening chamber. The one or more valves may include a first valve and a second valve. The first valve may be responsive to water being communicated through the input. The second valve may be responsive to either manual actuation or a fluid level in the brine chamber. The system may further include a cartridge that is removably coupled with the water softening chamber. The cartridge may contain salt and may further define the brine chamber. | 05-22-2014 |
20150048029 | WATER SOFTENING COMPOSITIONS AND METHODS - Novel water softening products and methods of treating hard water are provided. The products comprise a salt and a metal chelating agent. The products are useful for regenerating ion exchange material in a water softening system and providing softened water containing both sodium and potassium ions, while having dramatically increased efficiencies over prior art products. | 02-19-2015 |
20150060366 | Cartridge for the Treatment of Drinking Water and Method for Purifying Drinking Water - A cartridge for treating drinking water, the cartridge comprising a mixture of an ion-exchange material, one part of which is a highly acidic ion-exchange material and another part of which is a weakly acidic ion-exchange material, wherein one of the materials is loaded with alkali ions or alkaline earth ions. | 03-05-2015 |