Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7037482 | Solvent extraction of a halide from a aqueous sulphate solution A method of extracting a halide and sulphate from an aqueous sulphate solution, such as a zinc sulphate solution, comprises subjecting the solution to solvent extraction to extract halide and sulphate from the solution and controlling the amount of sulphate extracte... | 05/02/2006 |
| 6379556 | Recovery of iodide from chemical process wastewater The recovery of iodide from chemical process wastewater is accomplished by loading the wastewater containing iodide onto a strongly basic anion-exchange resin in free-base form; eluting the sorbed iodide from the resin with aqueous strong acid (e.g., hydr... | 04/30/2002 |
| 6190637 | Method for preparing [F-18-]fluoride ion The present invention provides a method for preparing [F-18]-fluoride ion which comprises the step of bringing [O-18]-enriched water containing [F-18]-fluoride ion formed by proton irradiation of [O-18]-enriched water into contact with a strongly acidic c... | 02/20/2001 |
| 5619545 | Process for purification of radioiodides The invention relates to a process for purifying radioiodides which comprises a) passing a recovered solution of iodide over an anion exchange resin; b) washing the ion exchange resin in (a) with a solution comprising a weak base or anionic ion; c) washing the... | 04/08/1997 |
| 5464603 | Method of treating aqueous iodide solutions A method is provided for removing iodide from aqueous solutions in which the iodide is converted to iodine. The porous granules of the polyvalent metal chelating resin containing zirconium peroxide bound to the chelating groups thereof is contacted with t... | 11/07/1995 |
| 5356611 | Method of recovering iodine A method for recovering iodine from a composition containing iodine and/or iodide in which any iodine present is first reduced to iodide, the iodide is then separated from solution by selective anion exchange absorption, the separated iodide is eluted fro... | 10/18/1994 |
| 5269834 | Process for removal of inert gases from liquid chlorine and system therefor A method and system for treating liquid chlorine to remove inert gases therefrom. Liquid chlorine is treated by passing it through a molecular sieve having a molecular pore diameter greater than the molecular diameter of the inert gases and smaller than t... | 12/14/1993 |
| 5069884 | Process for the purification of an aqueous alkali metal chloride solution from ammonium and iodine compounds Process for the purification of an aqueous alkali metal chloride solution from iodine compounds and ammonium compounds, in which the operation is carried out in two successive stages comprising a first stage in which the iodine compounds are oxidized to m... | 12/03/1991 |
| 4996098 | Coated cation exchange fabric and process A coated cation exchanged fabric having as its base a fluorinated cation exchange resin, oriented at least 1x, in alkali metal salt form and as its coating an unoriented or oriented melt-fabricable precursor of the same salt-form fluorinated cation exchan... | 02/26/1991 |
| 4990228 | Cation exchange membrane and use A fluorinated cation exchange membrane made using reinforcement of oriented, hydrolyzed fabric of a cation exchange copolymer, the fabric having a coating of a melt-processible precursor or derivative of a fluorinated cation exchange resin on at least one... | 02/05/1991 |
| 4517322 | Acrylated alkyd and polyester resins Non-gelled resins formed by reacting an ethylenically unsaturated polyester with ethylenically unsaturated monomers which include an ethylenically unsaturated acid are provided which are useful in coatings having better stability.... | 05/14/1985 |
| 4451375 | Iodine adsorption via picolylamine ion exchange resins Resins bearing picolylamine moieties selectively adsorb iodide ions from acidic aqueous solutions. The iodide can be readily eluted from the resin with base. Particularly useful resins are obtained by reacting chloromethylated styrene-divinylbenzene copol... | 05/29/1984 |
| 4439408 | Process and extractant for removing fluorine compounds from aqueous phosphoric acid The invention provides a process for removing fluorine compounds from aqus phosphoric acid containing the same, which process comprises contacting the phosphoric acid with a water insoluble extractant comprising phosphoric acid and an oil soluble amine, ... | 03/27/1984 |
| 4410505 | Hydrogen iodide decomposition Liquid hydrogen iodide is decomposed to form hydrogen and iodine in the presence of water using a soluble catalyst. Decomposition is carried out at a temperature between about 350° K. and about 525° K. and at a corresponding pressure between about 25 an... | 10/18/1983 |
| 4396591 | Recovery of hydrogen iodide A method of extraction of HI from an aqueous solution of HI and I2. HBr is added to create a two-phase liquid mixture wherein a dry phase consists essentially of HBr, I and HI and is in equilibrium with a wet phase having a far greater HBr:HI r... | 08/02/1983 |
| 4388231 | Process for extraction of iodine Process for the selective extraction of iodine from aqueous solutions containing the same, comprising utilizing as the iodine solvent a hydrophobic compound comprising ether groups, having a non-ionic character, of the type ##STR1## in which R i... | 06/14/1983 |
| 4275045 | Method of extraction, trapping and storage of radioactive iodine contained in irradiated nuclear fuels After dissolving irradiated nuclear fuel in a nitric acid medium, the vapor produced by this dissolution and consisting of water, nitrogen oxides and iodine is passed into a condenser, then into a column for the absorption of the nitrous vapor in which is... | 06/23/1981 |
| 4212849 | Simultaneous extraction and recovery of uranium and vanadium from wet process acids A process for the simultaneous coextraction of uranium and vanadium from an aqueous acidic solution containing the same comprising contacting said aqueous acidic solution with an organic phase comprising a mixture of (a) an alkyl substituted diaryl phosph... | 07/15/1980 |
| 4183748 | Method of removing surface ionic impurities on inorganic photoconductive material This invention is directed to photosensitive material for electrophotography and more particularly it is directed to the improvement of the properties with respect to humidity of photosensitive material by using photoconductive material in combination wit... | 01/15/1980 |
| 4176169 | Method of extracting iodine from liquid mixtures of iodine, water and hydrogen iodide The components of a liquid mixture consisting essentially of HI, water and at least about 50 w/o iodine are separated in a countercurrent extraction zone by treating with phosphoric acid containing at least about 90 w/o H3 PO4. The b... | 11/27/1979 |
| 4131645 | Iodine recovery process Iodine is recovered from an aqueous solution containing iodide such as underground brine by repeated cycles of (1) passing the brine through a basic anion exchange resin to adsorb iodide, and (2) oxidizing adsorbed iodide to iodine by passing an acidified... | 12/26/1978 |
