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| Number | Title | Issue Date |
| 7691266 | Separation devices and processes A separation device comprises a cylindrical separation pack including a spirally wound porous medium, a feed channel including a shear region, a plurality of permeate passages extending along the permeate side of the porous medium opposite the shear region and perpe... | 04/06/2010 |
| 7416666 | Mobile desalination plants and systems, and methods for producing desalinated water Systems, methods, and apparatus for desalinating water are provided. A vessel includes a water intake system, a reverse osmosis system, a concentrate discharge system, a permeate transfer system, a power source, and a control system. The concentrate discharge system... | 08/26/2008 |
| 7410581 | Branched flow filtration and system A cross flow filtration apparatus for nanofiltration or reverse osmosis has pressure vessels with a plurality of filter cartridges in each vessel. A feed port is provided at an intermediate position on the side of the vessel, and two permeate flows or branches exit ... | 08/12/2008 |
| 7387731 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 06/17/2008 |
| 7387728 | Animal powered mechanical device for water desalination This invention provides animal powered mechanical device for water desalination. It has unique features of using animal power as prime mover to effect brackish water desalination. Animal energy in form of high-torque low-speed can be converted into low-torque high-s... | 06/17/2008 |
| 7368058 | Method of generating fresh water and fresh-water generator The present invention is a water processing method comprising the steps of separating boron-containing water in a reverse osmosis membrane module to provide a permeated water and subjecting a part of the obtained permeated water to boron removal using an adsorbent, ... | 05/06/2008 |
| 7341663 | Spiral-wound liquid membrane module for separation of fluids and gases The present invention is a filtering and chemical separation device that performs the operations of solvent extraction and pervaporation in a single piece of equipment, configured as a spiral-wound membrane module, and provides for the replenishment of the solvent i... | 03/11/2008 |
| 7335301 | Fold protection for spiral filtration modules utilizing UV cured adhesive and method of providing same The present invention encompasses a leaf packet useful in forming a spiral filtration module, wherein the fold area of the leaf packet is reinforced with a UV cured adhesive. The invention further encompasses a spiral filtration module wherein the fold line, side se... | 02/26/2008 |
| 7311831 | Filtration membrane and method of making same A filtration membrane and method of making the same wherein the filtration membrane comprises obstructions and/or spacers. ... | 12/25/2007 |
| 7311830 | Filtration element and method of constructing a filtration assembly A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the r... | 12/25/2007 |
| 7303675 | Blister protection for spiral wound elements A method for preventing osmotic blistering in spirally-wound elements of semipermeable membrane sheet material (14) by applying an effective coating of a sealant (41, 43, 45) to the upstream surface of such membrane material in regions where such poten... | 12/04/2007 |
| 7297268 | Dual head pump driven filtration system Improvements in product water throughput from a reverse osmosis (RO) membrane achieved by thinner feed spacers in the RO element (22), enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pre... | 11/20/2007 |
| 7244357 | Pumps for filtration systems Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure... | 07/17/2007 |
| 7208088 | Spiral wound filtration membrane cartridge with chevron seal A spiral wound filtration cartridge construction is provided which includes a cartridge positioned within a solid outer cylinder which, in turn is positioned within a solid outer cylinder which, in turn is positioned within a solid housing. Fluid flows within the sp... | 04/24/2007 |
| 7182866 | Apparatus and method for separating impurities from a stream A filtration apparatus and method for filtering a stream. The apparatus comprises a rotor that contains an inlet for the stream and an array of cavities operatively arranged to receive the stream from the impeller. The rotor member further includes membranes, operat... | 02/27/2007 |
| 7105089 | Liquid—liquid extraction system and method A liquid-liquid extraction system including an outer chamber and an inner chamber. The outer chamber is adapted to contain one of a feed solution and a liquid extractant and defines a containment region. The inner chamber is adapted to contain the other of the feed ... | 09/12/2006 |
| 7081205 | Mobile desalination plants and systems, and methods for producing desalinated water Systems, methods, and apparatus for desalinating water are provided. A vessel includes a water intake system, a reverse osmosis system, a concentrate discharge system, a permeate transfer system, a power source, and a control system. The concentrate discharge system... | 07/25/2006 |
| 7018539 | Treatment of shipboard-generated oily wastewaters A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane separation step, such as an ultrafiltration step. The membrane separation ... | 03/28/2006 |
| 6989097 | Feed spacers for filtration membrane modules The invention disclosed relates to feed spacers used in various filtration membrane modules, such as in spiral wound membranes, used in cross-flow filtration. Such spacers have an influence in promoting the mixing between the bulk of the fluid and the fluid element ... | 01/24/2006 |
| 6984321 | Apparatus for filtering and separating flow media In an apparatus for filtering and separating a flow medium by way of membranes disposed in a pressurized housing, which has an inlet for supplying the flow medium to the housing and outlets for discharging the retentate and the permeate from the housing, the membran... | 01/10/2006 |
| 6977041 | Apparatus for manufacturing deionized water and using method thereof An apparatus and method for manufacturing deionized water is provided. Water is supplied to a first conduit. A plurality of reverse osmotic pressure vessels are connected to the first conduit. A filtering experimental vessel is connected to the first conduit, the fi... | 12/20/2005 |
| 6942797 | Filtration using pressure vessel with multiple filtration channels A filtration system includes an outer casing (210) that houses a plurality of elongated inner casings (220A–220F), which in turn house a plurality of filtration membranes. The outer casing, inner casing, and filtration membranes are disposed r... | 09/13/2005 |
| 6881336 | Spiral wound element with improved feed space The present invention is an improved feed spacer, spiral wound element incorporating said feed spacer, filtration system and a method for making and using the same. In one embodiment the present invention includes an improved spiral wound element having: a central c... | 04/19/2005 |
| 6861000 | Running method and washing method for spiral wound membrane element and spiral wound membrane module A spiral wound membrane module comprises a spiral wound membrane element including a separation membrane having high back pressure strength. The flow rate of permeate in filtration of the spiral wound membrane element is preferably set to 0.5 to 2.0 m3/m | 03/01/2005 |
| 6805796 | Water treatment apparatus A water treatment apparatus according to the present invention includes a plurality of composite reverse osmosis membrane modules arranged in multi-stages, each of the modules including a porous support and a polyamide skin layer formed on the porous support. In thi... | 10/19/2004 |
| 6632356 | Separation membrane end cap A separation end cap adapted for connecting adjacent separation elements is provided. The end cap may be located at the distal ends of a separation element and is adapted for connection with a permeate tube located within the separation element. In one em... | 10/14/2003 |
| 6558544 | Pressure vessels for holding cylindrical semipermeable membrane cartridges A pressure vessel designed to hold a plurality of cylindrical cartridges in the form of cross-flow semipermeable membrane filtration elements having central permeate tubes that are interconnected to form a composite permeate passageway that extends axiall... | 05/06/2003 |
| 6508943 | Filtering device and a filtering method The present invention refers to a filtering device comprising at least one filtering membrane, at least one counter surface opposite to the filtering membrane, and at least one gap-shaped liquid space formed between the filtering membrane and the counter ... | 01/21/2003 |
| 6294090 | Adsorptive substance separation device An adsorptive separation device is disclosed having at least one spiral wound adsorption membrane situated around the periphery of a core mandrel wherein the flow is radial from a feed plenum situated between the core mandrel and the membrane, through the... | 09/25/2001 |
| 6214232 | Membrane module with layered hollow-fiber membranes An apparatus and process for substance-specific treatment of fluids, whereby the apparatus comprises a housing with a distribution space and a collection space, between which is arranged a structure of adjacent flat first and second layers containing firs... | 04/10/2001 |
| 6168648 | Spiral wound type membrane module, spiral wound type membrane element and running method thereof A spiral wound type membrane element is formed by superposing gas-liquid contact membranes on both surfaces of a first fluid passage forming member, superposing a second fluid passage forming member on the surface of one of the gas-liquid contact membrane... | 01/02/2001 |
| 6153098 | Spiral wound filter with central barrier The present invention comprises a fluid filter element which has a hollow perforate cylindrical supporting core. A relatively fine filter media of substantial cross section is spirally wound about the supporting core with adjacent layers spaced from each ... | 11/28/2000 |
| 6142312 | Membrane separation device with membrane module and washing apparatus therefor A membrane separation device includes a washing apparatus and a membrane module. The washing apparatus is formed of a vessel for accommodating the membrane module therein, a first tank and a second tank for accommodating washing liquid for washing the mem... | 11/07/2000 |
| 5858229 | Spiral wound type membrane module A spiral wound type membrane module is formed by winding membranes onto a shaft by way of outer spacers. An inner spacer is inserted into the membrane. Raw water is fed from one end of a membrane roll into channels between the membranes. The raw water flo... | 01/12/1999 |
| 5798049 | Filter cartridge construction and process for filtering particle-containing paint compositions A filter element for filtering a particle-containing paint composition or a particle loading slurry composition which is a precursor to a particle-containing paint composition is provided. The filtration element comprises at least one filtration layer for... | 08/25/1998 |
| 5702601 | Structure enhancing hollow fiber module The invention involves annular hollow fiber membrane bundle comprising a plurality of helically wound layers of semi-permeable hollow fibers helically wound thereon and at least one reinforcement filament which has been helically wound concurrently with s... | 12/30/1997 |
| 5674452 | Hollow fiber exchangers An exchanger includes an outer casing having an inlet port and an outlet port for a first fluid, and an inlet port and an outlet port for a second fluid, and a bundle of hollow fibers located within the outer casing and being in flow communication with th... | 10/07/1997 |
| 5562825 | Filter element having a flat and non-flat configuration A filter element of the present invention provides low pressure loss, superior filter performance and bonding of filtering material, and compactness. An inlet path of a nearly semicircular configuration which is formed in the width direction of a filter e... | 10/08/1996 |
| 5489413 | Hollow fiber blood oxygenator An exchanger includes an outer casing having an inlet port and an outlet-port for a first fluid, and an inlet port and an outlet port for a second fluid, and a bundle of hollow fibers located within the outer casing and being in flow communication with th... | 02/06/1996 |
| 5128037 | Spiral wound filtration membrane cartridge A spiral wound filtration cartridge construction is provided which includes a cartridge positioned within a solid outer cylinder which, in turn is positioned within a solid housing. Fluid flow within the space between the outer cylinder and housing is con... | 07/07/1992 |
