Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 8142665 | Fast reduction of iodine species to iodide In a method of fast reduction of all iodine species, exclusively, including all volatile iodine species, into non-volatile iodide ions in an aqueous solution, a reducing agent and a co-agent with phase transfer catalyst—ion-exchanger property are simultaneously ad... | 03/27/2012 |
| 7651618 | Method and apparatus for treatment of an effluent containing radioactive materials A method and apparatus for treating an effluent containing radioactive materials: wherein an oxidizing agent is added to an effluent containing radioactive materials, and the effluent including the oxidizing agent is filtered with a filtration film to obtain filtrat... | 01/26/2010 |
| 7413663 | Water treatment apparatus and method A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no wat... | 08/19/2008 |
| 7390414 | Regeneration of chemically treated zeolite Systems and methods are provided for the removal and disposal of arsenic from an aqueous medium. The systems and methods include the removal of arsenic from a source by contact with either a chemically treated natural or synthetic zeolite, for example a ferric-loade... | 06/24/2008 |
| 7332089 | Method of extracting metal ions from an aqueous solution utilizing an antimony silicate sorbent The invention provides a use of a material comprising antimony silicate as a sorbent in the removal of metal ions, e.g. radioactive metal ions, from an acidic liquid medium. The metal ions may be selectively removed from amongst other ions such as Na, K, Mg, and Ca ... | 02/19/2008 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7314569 | Treatment of arsenic-contaminated water using akaganeite adsorption The present invention comprises a method and composition using akaganeite, an iron oxide, as an ion adsorption medium for the removal of arsenic from water and affixing it onto carrier media so that it can be used in filtration systems. ... | 01/01/2008 |
| 7309437 | Compositions and methods for removal of toxic metals and radionuclides The present invention relates to compositions and methods for the removal of toxic metals or radionuclides from source materials. Toxic metals may be removed from source materials using a clay, such as attapulgite or highly cationic bentonite, and chitin or chitosan... | 12/18/2007 |
| 7294271 | Process for restoration of ground water used in in-situ uranium mining A process for biological restoration of ground water in a mineralized sandstone formation using a nutrient source. The process is used in conjunction with mining uranium using in-situ pump and treat technology. The restoration of the ground water is designed to meet... | 11/13/2007 |
| 7291316 | Cesium and strontium extraction using a mixed extractant solvent including crown ether and calixarene extractants A mixed extractant solvent including calix[4]arene-bis-(tert-octylbenzo)-crown-6 (“BOBCalixC6”), 4′,4′,(5′)-di-(t-butyldicyclo-hexano)-18-crown-6 (“DtBu18C6”), and at least one modifier dissolved in a diluent. The mixed extractant solvent may be used t... | 11/06/2007 |
| 7282526 | Particle having an attached halide group and methods of making the same A modified particle or aggregate is disclosed wherein a particle has an attached group having the formula: wherein the substituents are defined in the disclosure. Modified particles with attached polymers are als... | 10/16/2007 |
| 7268273 | Recovering metals from soil The invention relates to recovering metals, such as nickel and cobalt, by phytomining or phytoextracting soils rich in metals wherein the desired metal is selectively accumulated in hyperaccumulator plants by adjusting the soil pH. The metals are ultimately recovere... | 09/11/2007 |
| 7244403 | Purification of Lutetium 177 Undesirable metal cation contaminants, including hafnium, can be reduced from a solution containing Lutetium-177 on a bed of an anion exchange resin. The thus purified solution can be stored and transported in a polypropylene vial, to prevent the possibility of hafn... | 07/17/2007 |
| 7214516 | Bacterial effects on metal accumulation by plants The invention includes methods for (1) extracting metals from soil by the use of plants that extract and accumulate the metal and adding bacteria to the soil that enhances the ability of the plants to extract the metal, and (2) preparing soil for extraction of a met... | 05/08/2007 |
| 7160466 | Uses of cucurbituril devices Uses of cucurbituril derivatives are disclosed. The cucurbituril derivatives have the formula (1) where X is O, S or NH; R1 and R2 are independently selected from the group consisting of hyd... | 01/09/2007 |
| 7138643 | Method and apparatus for separating ions of metallic elements in aqueous solution Methods and apparatus for separating ions of metallic elements are provided. Preferred methods utilize a hydrophobic chelating extractant, such as an organophosphorus compound, adsorbed onto carbon or graphite fibers in the form of felt. Also described is a new thal... | 11/21/2006 |
| 7098327 | Dual-functional ion exchange resins from agricultural by-products A process for the production of dual-functional ion exchange resins from lignocellulosic agricultural material involving anionization of the lignocellulosic agricultural material with citric acid and then cationization of the lignocellulosic agricultural material wi... | 08/29/2006 |
| 7097772 | Method of purifying a waste stream using a microporous composition The invention is directed to open-framework and microporous solids well suited for use in catalysis and ion exchange. The microporous solids are constructed by using a salt template which can be readily removed without destroying the framework of the micropore. Vari... | 08/29/2006 |
| 7087206 | Multicolumn selectivity inversion generator for production of high purity actinium for use in therapeutic nuclear medicine A multicolumn selectivity inversion generator separation method has been developed in which actinium ions, a desired daughter radionuclide, are selectively extracted from a solution of the thorium parent and daughter radionuclides by a primary separation column, str... | 08/08/2006 |
| 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 |
| 7081484 | Anion exchange membrane, process for its production and solution treating apparatus An anion exchange membrane comprising a resin phase which contains from 20 to 96 mass % of a polymer having repeating units represented by the following formula (1): wherein A is a C3-8 alkylene group ... | 07/25/2006 |
| 7069690 | Compositions and methods for removing pollutants from contaminated wafer with a fern plant Processes and materials for phytoremediating water-containing sites which have been contaminated with pollutants such as arsenic, phosphorous, or other metals. Fern plants can be used to accumulate pollutants from contaminated water-containing sites having an aqueou... | 07/04/2006 |
| 7067456 | Sorbent for separation of carbon dioxide (CO) from gas mixtures A reaction-based process has been developed for the selective removal of carbon dioxide (CO2) from a multicomponent gas mixture to provide a gaseous stream depleted in CO2 compared to the inlet CO2 concentration in the stream. The pr... | 06/27/2006 |
| 7065920 | Contaminant removal by additional ferns Processes, methods, materials and compositions for phytoremediating contaminated waters, which have been contaminated with pollutants such as arsenic. Fern plants that include Pteris and non-Pteris fern plants can be used to accumulate pollutants from ... | 06/27/2006 |
| 7063792 | Method for separating metals such as zirconium and hafnium A method for separating a metal (a) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state preventing them from passing through a nanofiltration membrane; treating the a... | 06/20/2006 |
| 7049492 | subspecies for cadmium and zinc recovery A cadmium and zinc hyperaccumulating subspecies from Thlaspi caerulescense and methods for removing or recovering cadmium and zinc from soils by cultivating the Thlaspi caerulescense subspecies on soils containing cadmium and zinc. ... | 05/23/2006 |
| 7022292 | Radioactive waste treatment facility An injection and solidification operation as well as a kneading and solidification operation can be performed by a single facility. A decreased amount of radioactive secondary waste is generated. A solidifying agent paste is prepared by kneading a solidifying agent ... | 04/04/2006 |
| 7018542 | Method for removing heavy metals and radionuclides from an aqueous solution A solid ion-exchange material useful for removing heavy metals or radionuclides from an aqueous solution comprising a modified clinoptilolite, and methods of using same are provided. ... | 03/28/2006 |
| 6998054 | Selective fluoride and ammonia removal by chromatographic separation of wastewater A process for fluoride removal from wastewater streams produced during industrial operation for further industrial use or to comply with environmental regulations. The process segregates the removal of fluoride and fluorosilicate ions, from the totality of ions in t... | 02/14/2006 |
| 6998052 | Multicolumn selectivity inversion generator for production of ultrapure radionuclides A multicolumn selectivity inversion generator separation method has been developed in which a desired daughter radionuclide is selectively extracted from a solution of the parent and daughter radionuclides by a primary separation column, stripped, and passed through... | 02/14/2006 |
| 6991731 | Treatment process for removing radioactive thorium from solvent extraction liquid effluent The liquid effluent from solvent extraction contains radioactive thorium Th-231 and Th-234. This invention uses an ion exchange process to remove and concentrate the thorium. The process is designed so that the thorium remains on the ion exchange column until it dec... | 01/31/2006 |
| 6972095 | Magnetic molecules: a process utilizing functionalized magnetic ferritins for the selective removal of contaminants from solution by magnetic filtration A decontamination system uses magnetic molecules having ferritin cores to selectively remove target contaminant ions from a solution. The magnetic molecules are based upon a ferritin protein structure and have a very small magnetic ferritin core and a selective ion ... | 12/06/2005 |
| 6881347 | Method for removing radioactive substances from affecting water wells The natural ability of an aquifer formation to remove radionuclides from ground water is recharged by injecting a leaching solution a well. The leaching solution replaces the radionuclides at natural sorption sites in the aquifer formation with ions that can be disp... | 04/19/2005 |
| 6852233 | Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material An object of the present invention is to provide a structure of a metal collecting material for use in seawater or river water or industrial wastewater to give the most excellent adsorption efficiency. Another object of the present invention is to provide a process ... | 02/08/2005 |
| 6852296 | Production of ultrapure bismuth-213 for use in therapeutic nuclear medicine A multicolumn selectivity inversion generator has been developed in which bismuth-213 is selectively extracted from an HCl solution of the actinium-225 parent (and its radiogenic descendents) by a primary separation column containing a separation medium containing a... | 02/08/2005 |
| 6843921 | Method of separation and recovery of elements from radioactive liquid wastes A method of separation and recovery of elements from radioactive liquid wastes, includes a step of bringing into contact a high-level radioactive liquid waste containing separation target elements including Americium, Curium, Zirconium, Molybdenum, Palladium and rar... | 01/18/2005 |
| 6827859 | Method for removing heavy metals and radionuclides from an aqueous solution A method for removing heavy metals or radionuclides from an aqueous solution comprising contacting the aqueous solution with an ion exchange material selected from a solid ion exchange material, a liquid ion exchange material, or mixtures thereof, wherein the ion ex... | 12/07/2004 |
| 6824690 | Zirconium-modified materials for selective adsorption and removal of aqueous arsenic A method, composition, and apparatus for removing contaminant species from an aqueous medium comprising: providing a material to which zirconium has been added, the material selected from one or more of zeolites, cation-exchangeable clay minerals, fly ash, mesostruc... | 11/30/2004 |
| 6818188 | Radioactive waste treatment facility An injection and solidification operation as well as a kneading and solidification operation can be performed by a single facility. A decreased amount of radioactive secondary waste is generated. A solidifying agent paste is prepared by kneading a solidifying agent ... | 11/16/2004 |
| 6787042 | Automated radionuclide separation system and method A gas-free system for separating a solution of substantially impurity-free daughter products from an associated parent load solution includes a pump, a plurality of multi-port valves, separation medium and a processor. An uncoiled conduit extends between a third por... | 09/07/2004 |
