Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 8034244 | High efficiency ion exchange system for removing arsenic contaminants from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to anothe... | 10/11/2011 |
| 7713424 | Methods for purging absorptive materials used in the removal of contaminates from an aqueous medium Methods, systems and apparatus are provided for purging an adsorptive material of entrapped particulates. Methods, systems and apparatus rely upon a reverse loop for reversing the flow of medium within an adsorption material, allowing particulates caught within the ... | 05/11/2010 |
| 7361281 | High efficiency ion exchange system and method for removing chromium from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to anothe... | 04/22/2008 |
| 7273556 | Method for treating water containing manganese The invention concerns a method for treating water for human consumption, so as to eliminate manganese and possibly other metals comprising steps which consist in: causing said water to pass at least over a bed of filtering material (3) consisting at least pa... | 09/25/2007 |
| 7267770 | Cartridges A radial flow cartridge, especially for use with an ion exchange resin, includes inner and outer tubular cages, and a tubular knitted liner extending the length of the cartridge between the inner and outer cages and spaced apart from the outer cage. The resin medium... | 09/11/2007 |
| 7157001 | Carbon filtration process and apparatus for removing PCB's and other compounds from wastewater Process and apparatus for treating wastewater from a sewer system including the steps of: (A) removing solids contained in the influent to create solids-depleted preliminary effluent (PrE) and to protect downstream systems from premature failure due to wear from sol... | 01/02/2007 |
| 7125490 | Porous filter A filter has a longitudinal axis with an inner diameter defined by a hollow longitudinally extending center. The filter has fingers extend radially outwardly arcuately from the longitudinal axis. The fingers have base ends near the longitudinal axis and outer edges ... | 10/24/2006 |
| 7083732 | Method and installation for removal of metal cations from a liquid by resins with polyazacycloalkanes grafted on a support The invention is related to a method and an installation for removal of metal cations contained in a liquid, in which said liquid is brought into contact at a temperature greater than or equal to 60° C. with a chelating ion exchange resin formed from a polyazacyclo... | 08/01/2006 |
| 7041223 | High efficiency ion exchanges system for removing contaminants from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operation position to anothe... | 05/09/2006 |
| 6972091 | Ion exchange resin plant An ion exchange resin plant for the demineralizing or softening water with an arrangement that allows the plant to operate continuously. The plant tank is divided into to two separate compartments that work simultaneously. One compartment effects water demineralizat... | 12/06/2005 |
| 6913741 | System and process for producing halogen oxides A system and process for oxidizing inorganic or organic species is disclosed. The system and process includes feeding a dilute aqueous alkali metal halite solution into a cation exchange column, wherein the cation exchange column contains a cation exchange material;... | 07/05/2005 |
| 6911481 | Method of regenerating ion exchange resin A method of regenerating an ion exchange resin, comprising the steps of packing a used ion exchange resin in a regeneration tower; and repeating at least twice a step comprising passing an aqueous solution of regenerant through the regeneration tower downward from a... | 06/28/2005 |
| 6878286 | High efficiency ion exchange system for removing contaminants from water The disclosed invention is a fixed bed ion exchange water purification system. It employs a combination of electronically controlled process steps and specific systems configurations to duplicate the effects of moving resin beds from one operating position to anothe... | 04/12/2005 |
| 6852232 | Down flow radial flow filter A method of coacting a fluid with a media, such as granular particles. The media is moved to an upper portion in an upright media container, and held there during a treatment cycle in which the fluid is coacted with the media. When the media requires regeneration, t... | 02/08/2005 |
| 6843920 | Ion exchange system using U-tube principle This invention is a liquid separation system using ion exchange resin, adsorbent resin and catalytic resin based on U-tube principle. It is shown that relatively low fluid velocity is sufficient to maintain the resin bed in compacted state during the operation as we... | 01/18/2005 |
| 6736976 | Fluid treatment process A fluid treatment device for reducing the level of a chemical compound in a fluid. The device comprises: a fluid inlet; a fluid outlet; a flow-through fluid treatment zone having comprising: a radiation source, an adsorbent and a photocatalyst. The fluid treatment z... | 05/18/2004 |
| 6730229 | Filter screen nozzle and system for fluid processing A nozzle and associated system is for treating fluids is provided, particularly for a system including a reaction vessel containing a granular filter or ion exchange medium and a fluid manifold immersed in the granular or ion exchange medium. The nozzle has an outer... | 05/04/2004 |
| 6641737 | Vertical filter A liquid filtering apparatus is placed in a vessel having a bed of filtration material and an intake for introducing unfiltered liquid, that includes a washbox, an airlifting tube extending from the washbox and including an intake end and means for introd... | 11/04/2003 |
| 6544751 | Methods of harvesting rare cells from blood products The present invention provides methods of harvesting rare cells from blood products and/or obtaining products of the rare cells. The method includes contacting a blood product containing rare cells with a porous medium, and selectively retaining rare cell... | 04/08/2003 |
| 6521132 | Ion exchange water softener and method A self-regenerating ion exchange water softener has a lower tank for a resin chamber and an upper tank for a regenerative salt chamber, with an opening positioned between them, and with a restrictive pressure-sensitive valve, sensitive to pressure of wate... | 02/18/2003 |
| 6368510 | Method and apparatus for the removal of arsenic from water A method and apparatus for removing arsenic from water at point of entry or point of use particularly for residential application. The point of entry system comprises a first stage having a manganese greensand oxidizer to convert arsenite (As+3) present i... | 04/09/2002 |
| 6358421 | Method for countercurrent regeneration of an ion exchange resin bed An improved method for regenerating ion exchange resin in a treatment tank having a flow direction, which includes the steps of providing a supply of regenerant under pressure into the tank, and introducing the regenerant into the tank in an opposite flow... | 03/19/2002 |
| 6322705 | Method and a device for the purification of fluids A water-based heating or cooling plant incorporating a filtration device and a pipeline network for bleeding water from the heating or cooling plant to the filtration device, the filtration network for bleeding water from the heating or cooling plant to t... | 11/27/2001 |
| 6322704 | Radial-flow fluidizable filter A radial flow fluidized unit (RFFU) (250) employing non-bonded media particles (56) for removing impurities from an influent, that can be backwashed and/or regenerated by fluidizing the media particles (56) to free the impurities therefrom. During a fluid... | 11/27/2001 |
| 6319413 | Method of filtering liquid using a vertical filter Method of filtering liquid using a vertical filter, which includes media, an airlift, a washbox, a reject box, a filtrate chamber, and an effluent box. The method of filtration and media cleaning is automatic. The filtered liquid is collected by multi-car... | 11/20/2001 |
| 6200364 | Process for eluting precious metals from activated carbon A process is disclosed for the recovery of gold and/or silver values from activated carbon, wherein they are adsorbed as cyanide complexes. The process uses an eluant containing sugar. The process allows the eluant to pass through fresh carbon twice, ther... | 03/13/2001 |
| 6001262 | Cascade ion exchange for high purity water production A method and system for treating and purifying water on site provides a cascade series of alternating cation and anion beds with flow control controlling flow of water in a first direction to flow through all beds in sequence, to purify the water, and con... | 12/14/1999 |
| 5976379 | Metathetic process utilizing a cation exchanger Disclosed is a metathetic process of the type M'X+M"=M'Y+M"X, where M' dirs from M" and the reagents and the products are water-soluble salts, comprising the steps of (a) transferring a solution of M"Y through at least one column containing cation exchan... | 11/02/1999 |
| 5951874 | Method for minimizing wastewater discharge Wastewater discharge, which is generated in an ion exchange regeneration system having a cation exchange bed and an anion exchange bed, is minimized by circulating a displacement rinse through a cation exchange bed, saving an effluent of the displacement ... | 09/14/1999 |
| 5893976 | Method for treatment of water The invention is directed to a water treatment system including a treatment tank having an ion-exchange mineral bed or filter bed therein, and a valve head assembly disposed on top of and in fluid communication with the treatment tank. The valve head asse... | 04/13/1999 |
| 5879560 | Back-flushable filter cartridge and method of back-flushing same A back-flushable filter cartridge includes a cylindrical exterior fluid-permeable filter media cage, a cylindrical interior fluid-permeable core element coaxially disposed within the filter media cage so as to establish therebetween an interior space, and... | 03/09/1999 |
| 5792359 | Sealing shoe for celless travelling bridge filter A backwash sealing shoe is provided for a filtration system including a tank having an undivided filtration bed and a plurality of side-by-side headers within the bed, each header in communication with a respective port in a wall of the tank. The sealing ... | 08/11/1998 |
| 5788864 | Amine heat stable salt removal from type II anion exchange resin A process for removing thiocyanate and other anions from Type II strong base anion exchange resins with an alkali metal hydroxide is disclosed. The process is particularly beneficial to the regeneration and/or reclamation of alkanolamine solutions laden w... | 08/04/1998 |
| 5744040 | Apparatus and method for removing dissolved hydrogen sulfide from water An apparatus for removing dissolved hydrogen sulfide from water including an atomizing tank defining an open end. A manifold is positioned adjacent the open end. The manifold defines an inlet channel having a first inlet port and a second inlet port. The ... | 04/28/1998 |
| 5705075 | Apparatus for maintaining a stable bath for an autodeposition composition by periodically separating particular metal ions from the composition A system automated for providing at least periodic removal of metal ions and contaminants from a chemical bath, consists of a microprocessor programmed for controlling fluid circuits of pumps and valves, for in one state of operation circulating a first p... | 01/06/1998 |
| 5681477 | Thermally-driven ion-exchange process for lithium recovery Ions (e.g. lithium) can be removed or recovered from brines containing those ions and optionally one or more other ions (e.g. other alkali metal ions) by the use of a temperature-swing, ion-exchange process employing an ion-exchange material. The process ... | 10/28/1997 |
| 5464530 | Ion exchange methods and systems incorporating regenerant recycling An ion exchanger of the countercurrent type includes a pressure vessel for supporting a resin bed. The vessel includes a first port through which water to be treated is supplied to the vessel during a production cycle, a second port through which regenera... | 11/07/1995 |
| 5460724 | Apparatus and method for the regeneration of an ion exchanger installation In a regenerating ion exchanger installation with a resin container, the water, acid and/or alkaline solution pipe conduits inlets lead into a common pump inlet conduit, whereby each inlet can be individually decoupled from the inlet conduit of the pump b... | 10/24/1995 |
| 5443650 | Process for softening a sugar-containing aquesous solution, such as sugar juice or molasses The invention relates to a process for softening an aqueous sugar juice containing sugars and Ca2+ and/or Mg2+ ions, such as a sugar factory molasses by means of a cation exchange resin, in the form of Na+ and/or K... | 08/22/1995 |
| 5387348 | Method of mixed-bed filtration and demineralization with ion-exchange resins A method of mixed-bed filtration and demineralization for removing suspended impurities from the primary cooling water in a power plant by means of a demineralizer having a mixed bed formed of a particulate cation and anion exchange resin that have such a... | 02/07/1995 |
