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| Number | Title | Issue Date |
| 7776305 | Method for purification of nitrogen oxide and apparatus for purification of nitrogen oxide A nitrogen oxide purifying apparatus includes a gas absorption vessel (1) and a condenser (6), where the vessel receives an absorption solution containing liquefied N2O4 for absorbing NO and also receives a source gas to vary the ... | 08/17/2010 |
| 7419647 | Hydrothermally stable Ag-zeolite traps for small olefin hydrocarbon molecules A hydrocarbon trap comprises an Ag-zeolite which is heated by a unique steaming regimen. ... | 09/02/2008 |
| 7235247 | Pharmaceutical composition for application to mucosa The present invention provides a pharmaceutical composition for application to the mucosa to be used in drug therapy comprising a water-insoluble and/or water-low soluble substance, a medicament, and an aqueous medium, and having an osmotic pressure of less than 290... | 06/26/2007 |
| 7070751 | Production of gaseous chloramine The present invention provides a reactor for the gas-phase reaction of commercially available gases in the presence of an inert carrier gas to form product gas. The reactor has a streamlined, compact configuration and at least one solids collection and removal syste... | 07/04/2006 |
| 7070746 | Process for nitrous oxide purification A method for purification of an oxygen contaminated nitrous oxide gas by feeding the nitrous oxide gas and a reducing agent such as hydrogen, carbon monoxide or ammonia into a de-oxidation reactor, performing de-oxidation by reacting the reducing agent with oxygen u... | 07/04/2006 |
| 6955799 | High temperature decomposition of hydrogen peroxide Nitric oxide (NO) is oxidized into nitrogen dioxide (NO2) by the high temperature decomposition of a hydrogen peroxide solution to produce the oxidative free radicals, hydroxyl and hydroperoxyl. The hydrogen peroxide solution is impinged upon a heated sur... | 10/18/2005 |
| 6793903 | High temperature decomposition of hydrogen peroxide Nitric oxide (NO) is oxidized into nitrogen dioxide (NO2) by the high temperature decomposition of a hydrogen peroxide solution to produce the oxidative free radicals, hydroxyl and hydroperoxyl. The hydrogen peroxide solution is impinged upon a heated sur... | 09/21/2004 |
| 6613926 | Perchloramido phosphonyl reagents and analogs thereof Novel compounds are provided in the form of nucleoside pyrophosphate and triphosphate analogs. In these analogs, the pyrophosphate or triphosphate group is replaced with a moiety that is isosterically and electronically identical thereto, but is hydrolyti... | 09/02/2003 |
| 6610263 | System and process for removal of pollutants from a gas stream System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorb... | 08/26/2003 |
| 6555078 | Method of preparing lithium salts The present invention provides an inexpensive process for the preparation of lithium salts of formula LiX having a desired or required level of purity using lithium chloride and lithium sulfate. In the process of the invention, a lithium salt selected fro... | 04/29/2003 |
| 6517797 | Process for separation of NOx from N2O in a mixture The present invention is a reactive adsorption process for separating NOx (NO and NO2 /N2 O4) from N2 O in a mixture. The process comprises (A) selectively converting NO to NO2 /N2 ... | 02/11/2003 |
| 6506351 | Removal of nitrogen oxides from gas streams The present invention relates to a process for removing nitrogen oxides from gas streams such as furnace or utility boiler flue gas streams. An adsorber system is used to adsorb nitrogen oxides from the flue gas streams. An oxygen/ozone gas stream contact... | 01/14/2003 |
| 6495112 | Method and apparatus for removing oxygen from natural gas Oxygen is removed from natural gas by contacting oxygen-containing natural gas with nitric oxide under conditions sufficient to produce nitrogen dioxide.... | 12/17/2002 |
| 6469163 | Method for production of hydroxylamine sulfate in the conventional process for the synthesis of caprolactam An improvement in the conventional process for the production of caprolactam. The process involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing a portion of the nitric oxide to nitrogen dioxide to prod... | 10/22/2002 |
| 6416682 | Method of producing minerals under near-critical, critical and supercritical conditions The present invention relates to methods of producing synthetic crystals (typically minerals) or comparable inorganic compounds by reactions of metal salts and metal oxyhydroxides under near-critical, critical or supercritical solvent conditions, avoiding... | 07/09/2002 |
| 6395243 | Catalytic or non-catalytic processes with enriched oxygen as a reactant A method is provided for performing catalytic or non-catalytic processes which uses oxygen supplied from the permeate side of a mixed oxygen ion and electron conducting membrane by means of a sweep gas at an elevated temperature. The sweep gas is formed b... | 05/28/2002 |
| 6333411 | Method for production of hydroxylammonium phosphate in the synthesis of caprolactam A method for production of caprolactam. The method involves: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidizing at least a portion of the nitric oxide to nitrogen dioxide to produce an NOx -rich pr... | 12/25/2001 |
| 6235252 | Method for recovering nitrate ions as nitric acid from nuclear industry effluents A method for recovering nitrate ions as nitric acid from nuclear industry effluents by thermally decomposing the nitrate ions in solution, and recovering the NOx vapors generated by the heat treatment in an aqueous medium. The resulting nitric ... | 05/22/2001 |
| 6136284 | Process for the removal of nitrogen oxides from gas streams The present invention relates to a process for removing nitrogen oxides from gas streams such as furnace or utility boiler flue gas streams. An ozone adsorption system is used to adsorb and concentrate ozone. A slip stream containing nitrogen oxides is in... | 10/24/2000 |
| 6002059 | Process for upgrading natural gas The invention discloses a method for converting methane to higher order hydrocarbons. This method includes synthesizing ammonia from natural gas and nitrogen in the presence of a source of hydrogen. The ammonia is converted to nitrous oxide in the presenc... | 12/14/1999 |
| 5849257 | Process for preparation of nitrous oxide A process for preparation of nitrous oxide, wherein ammonia is reacted with oxygen in the presence of steam using a copper-manganese oxide catalyst having diffraction angles measured by X-ray diffraction analysis of about 36°, about 58° and about 64°; ... | 12/15/1998 |
| 5670127 | Process for the manufacture of nitric oxide Nitric oxide is produced by reacting aqueous nitric acid with gaseous sulfur dioxide in a gas-liquid contact reactor. The reaction is conducted in the presence of a stoichiometric excess of nitric acid to minimize the production of byproduct nitrous oxide... | 09/23/1997 |
| 5659080 | Synthetic method for forming ammonium dinitrammide (ADN) A synthetic method for ammonium dinitramide comprising a process for the formation of urea nitrate by reacting urea with diluted nitric acid; a process for the formation of nitrourea by reacting the urea nitrate with sulfuric acid; a process of reacting t... | 08/19/1997 |
| 5626827 | Basic aluminum antiperspirant active materials having enhanced activity, antiperspirant active compositions containing such materials, and methods for preparation of such materials and compositions Disclosed are basic aluminum antiperspirant materials having univalent complex oxoanions (e.g., nitrate); methods of making such materials; antiperspirant compositions containing such basic aluminum materials, another antiperspirant active material (e.g.,... | 05/06/1997 |
| 5472680 | Production of NO from N2 O A Process for the conversion of N2 O to NO by heating a gas stream containing N2 O by contact with a heated heat exchange surface to a temperature of about 400° to 700 degrees C., and then heating the gas to a temperature of about 8... | 12/05/1995 |
| 5429811 | Process for the thermochemical decomposition of dinitrogen oxide Process for the thermochemical decomposition of dinitrogen oxide to products of general formula (I) NOx (I) x representing 1 or 2, wherein dinitrogen oxide is flame-treated, then the products of gene... | 07/04/1995 |
| 5348720 | Basic aluminum antiperspirant active material having enhanced activity, antiperspirant active composition containing such material, and methods for preparation of such material and composition Disclosed is a basic aluminum material having enhanced antiperspirant activity, the material having the empirical formula Al2 (OH)6-a Xa, where 0.5ࣘaࣘ5.0, and X is a univalent complex oxoanion of nitrogen, chlorine and... | 09/20/1994 |
| 5318763 | Process for preparing dinitrogen pentoxide Process for producing dinitrogen pentoxide (N2 O5) consists of reacting a solution of dinitrogen tetroxide (N2 O4) in a volatile organic solvent, with a stream of an ozone-containing carrier gas. N2 O... | 06/07/1994 |
| 5286685 | Refractory materials consisting of grains bonded by a binding phase based on aluminum nitride containing boron nitride and/or graphite particles and process for their production The invention relates to refractory materials which comprise: (A) grains of at least one refractory material whose melting point and thermal decomposition temperature are higher than 1700° C.; (B) a binding matrix which binds these grains together and predominantl... | 02/15/1994 |
| 5266292 | Method of extracting dinitrogen pentoxide from its mixture with nitric acid Method of extracting dinitrogen pentoxide (N2 O5) from its mixture in nitric acid, which consists of providing a solution of the mixture in an inert organic solvent, stripping out the N2 O5 from solution in a ca... | 11/30/1993 |
| 5264198 | Method for production of spacecraft-grade N2 O4 A spacecraft-grade N2 O4 product is produced by a method and apparatus which utilize catalytic oxidation of ammonia in a gas phase. The apparatus consists of an ammonia gas supply, an air supply, an air preheater, a catalyst screen c... | 11/23/1993 |
| 5198204 | Method of forming dinitramide salts A method is disclosed for forming a N,N-dinitramide salt having the formula MN(NO2)2 where M is a cation selected form the class consisting of a metal ion and a nitrogen-containing ion, which comprises contacting a carbamate with a n... | 03/30/1993 |
| 5171385 | High energy-density N2 O2 compound An energetic compound having the structural formula O--O--N--N is disclosed. Routes for synthesizing the compound involving the reaction of oxygen atoms in the [1 D] electronic state with N2 O are also disclosed. The energetic compound is... | 12/15/1992 |
| 5154906 | Redox-potential control for hydrogen peroxide in nitric acid A method of maintaining a given content of a substance A in an aqueous solution where it is continuously consumed and where the redox potential E, at least within the range of concentration used, approximately satisfies the equation: E=G+F(x) wherein x is... | 10/13/1992 |
| 5128001 | Method of separating electrochemically produced dinitrogen pentoxide from its solution in nitric acid A method of separating N2 O5 from its solution in nitric acid which comprises the steps of: (a) preparing, by the electrochemical oxidation of N2 O4 in nitric acid, a nitric acid solution at a temperature of at ... | 07/07/1992 |
| 4985217 | Method for removing nitrogen oxides from gases Method for removing nitrogen oxides from gases in which, at first, the molar ratio between NO and NO2 is set to 1 in said gas and subsequently the nitrogen oxides are absorbed in a hydrous ammonia solution, whereby ammonium nitrate is formed. I... | 01/15/1991 |
| 4940569 | Sorbent and processes for removing nitrogen oxides, sulfur oxides and hydrogen sulfide from gas streams Novel sorbents comprising (a) an alumina substrate having a pore volume between 0.4 and 0.8 cc/g, and (b) an alkali or alkaline earth component, for example, sodium carbonate, wherein the amount of the alkali or alkaline earth component is between 50 and ... | 07/10/1990 |
| 4783325 | Process and apparatus for removing oxides of nitrogen and sulfur from combustion gases A process provided in accordance with practice of this invention for lowering the molar ratio of NO to NO2 in flue gas by converting a portion of flue gas nitric oxide (NO) to nitrogen dioxide (NO2), for removing the associated oxide... | 11/08/1988 |
| 4720377 | Method for producing nitrous oxide by reacting ammonia with a molten nitrate salt of an alkaline earth metal This invention relates generally to a method for producing nitrous oxide, and more specifically, to a method of producing nitrous oxide by reacting ammonia with at least one molten nitrate salt of an alkaline earth metal.... | 01/19/1988 |
| 4689209 | Method for producing nitrous oxide by reacting ammonia with a molten nitrate salt This invention relates generally to a method for producing nitrous oxide, and more specifically, to a method for producing nitrous oxide by reacting ammonia with at least one molten nitrate salt.... | 08/25/1987 |
