Class 423/395 - Nitrate

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Products or processes wherein the product contains the nitrate
No. of patents: 152
Last issue date: 12/09/2008

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Number	Title	Issue Date
4724132	Continuous process for the manufacture of metal salt solutions from water-insoluble metal compounds and mineral acids A continuous process for the manufacture of a metal salt solution is described which provides more economical products with higher quality than current processes. The process is safer, both to operating personnel and to the environment, than currently use...	02/09/1988
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
4717429	Process for the removal of alkali metal nitrite from nitrate containing salt baths Undesired nitrites are formed during the treatment of salt bath nitrided structural components of iron and steel in nitrate containing cooling baths, and they must be removed from the washing water. The build-up of nitrites can be avoided by oxidizing the...	01/05/1988
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
4670230	Process for selectively stripping iron ions from an organic solvent A process for selectively stripping and separating iron ions from an organic solvent (A) which comprises bringing the organic solvent (A) containing iron and zinc ions, and containing one or more compounds selected from the group consisting of alkyl phosp...	06/02/1987
4668495	Process for obtaining potassium nitrate from potassium chloride and nitric acid The present invention provides a process for manufacture of potassium nitrate from potassium chloride and nitric acid. A source of potassium chloride may be screened and separated into fine and coarse fractions, or the screening may be eliminated and the ...	05/26/1987
4564510	Method for removing nitrogen oxides from waste gases A method is provided for removing nitrogen oxides from waste gases, said method comprising the steps of oxidizing the nitrogen oxides in the waste gases by contacting the waste gases in a gas phase with an oxidizing agent to form NO2 ; absorbin...	01/14/1986
4559993	Process for stabilizing a mixture of molten alkali metal nitrates and alkali metal nitrites usable particularly as a heat transfer fluid and stabilized mixture thus obtained The present invention relates to a process for stabilizing a mixture of molten alkali metal nitrates and alkali metal nitrites usable particularly as a heat transfer fluid and to the stabilized mixture thus obtained. The process comprises adding to the mixture...	12/24/1985
4541999	Method for removing acidic components including nitrogen oxide from waste gases A method of simultaneously removing SOx and NOx from waste gases. Using a known desulfurization process the waste gases free of the acidic components are contacted with an oxidizing agent in the gas phase for the oxidation of the oxy...	09/17/1985
4515615	Manufacturing and using nitrogen fertilizer solutions on a farm To make non-pressure nitrogenous fertilizer solutions, nitrogen oxides are prepared in a continuous process by burning ammonia in contact with a cobalt oxide catalyst started by an electric arc without preheating the gases. This burning forms nitrogen oxi...	05/07/1985
4512794	Manufacturing and using nitrogen fertilizer solutions on a farm To make non-pressure nitrogenous fertilizer solutions, nitrogen oxides are prepared in a continuous process by burning ammonia in contact with a cobalt oxide catalyst started by an electric arc without pre-heating the gases. This burning forms nitrogen ox...	04/23/1985
4511551	Method and composition for the detection of a precancerous or leukemic condition in mammals The invention is a method for detecting the presence of or a predisposition to cancer in mammalian individuals. A trace element, specifically tin, is administered to the individual in the form of a radioactive isotope or a compound containing a radioactiv...	04/16/1985
4511389	Manufacturing and using nitrogen fertilizer solutions on a farm To make and use nitrogenous fertilizer on a farm, nitrogen dioxide is prepared in a continuous process from air or from ammonia in a reactor, with the ammonia either being transported to the farm or being prepared on the farm in a continuous process from ...	04/16/1985
4472362	Regeneration of crystalline lithium aluminates Crystalline 2-layer lithium aluminate, especially when carried in an ion exchange resin, is regenerated for use as an extractor for Li+ values in aqueous solution, said regeneration being done by using an aqueous wash containing at least about ...	09/18/1984
4465568	Electrochemical production of KNO₃ /NaNO₃ salt mixture A process for the electrolytic production of a chloride-free mixture consisting essentially of sodium and potassium nitrates is disclosed. In this process, an anolyte brine comprised of a mixture of sodium and potassium chlorides dissolved therein is elec...	08/14/1984
4455251	Aqueous solution of alkali metal compositions According to the present invention a saturated aqueous solution comprising at least one alkali metal hydroxide and at least one alkali metal nitrate is provided which can be spray added to a fused anhydrous bath which contains alkali metal materials....	06/19/1984
4450148	Preparation of manganite, MnOOH A process of preparing manganite, MnOOH, from an aqueous manganese (II) nitrite solution by a fast batch decomposition in the presence of an "active" solid surface....	05/22/1984
4448760	Continuous process for the preparation of manganite, MnOOH A process of preparing manganite, MnOOH, from an aqueous manganese (II) nitrite solution by a continuous two-step decomposition process in the presence of an "active" solid surface....	05/15/1984
4438083	Process for preparing magnesium nitrate hexahydrate and for thermally stabilizing ammonium nitrate using magnesium nitrate hexahydrate Process for preparing magnesium nitrate hexahydrate without the need for filtering aids. A process for preparing magnesium nitrate hexahydrate essentially comprises: (a) forming a magnesium oxide or magnesium carbonate suspension in melted magnesium nitra...	03/20/1984
4430241	Mixed nitrate salt heat transfer medium and process for providing the same A process for producing particles of a non-friable eutectic mixture of sodium nitrate and potassium nitrate for solar power station use is disclosed. In one embodiment of the invention, the particles are produced by shock chilling a molten stream of mixed...	02/07/1984
4426364	Removal and recovery of nitrogen oxides and sulfur dioxide from gaseous mixtures containing them A cyclic process for removing lower valence nitrogen oxides from gaseous mixtures includes treating the mixtures in a first stage with an acidic aqueous media including a peroxygen oxidant to form nitric acid and higher valence nitrogen oides and to captu...	01/17/1984
4426367	Fixation of nitrogen in the presence of water vapor A process for the fixation of nitrogen is disclosed which comprises combining a mixture of nitrogen, oxygen, metal oxide and water vapor, initially heating the combination to initiate a reaction which forms nitrate, but at a temperature and pressure range...	01/17/1984
4425313	Removal and recovery of nitrogen and sulfur oxides from gaseous mixtures containing them A cyclic process for removing lower valence nitrogen oxides from gaseous mixtures includes treating the mixtures with an aqueous media including alkali metal carbonate and alkali metal bicarbonate and a preoxygen oxidant to form higher valence nitrogen ox...	01/10/1984
4421662	Nonaqueous purification of mixed nitrate heat transfer media A nonaqueous, in-line method for removing carbonate and hydroxide contamination from a molten mixed sodium nitrate/potassium nitrate heat transfer salt. The method comprises dissolving a stoichiometric quantity of anhydrous Ca(NO3)2 ...	12/20/1983
4421729	Preparation of strontium carbonate Strontium carbonate is prepared by the process of reacting strontium nitrate in an aqueous reaction medium with carbon dioxide to precipitate strontium carbonate product, the nitric acid byproduct that forms being neutralized by the introduction of lime t...	12/20/1983
4410443	Method of dissolving iron oxide-chrome oxide spent shift catalysts to prepare a nitrate solution suitable for use in preparing a new catalyst A method of preparing a solution of the nitrate of iron and mixed chromium from a spent iron oxide-chrome oxide shift catalyst which comprises dissolving said spend iron oxide-chrome oxide shift catalyst with nitric acid in the presence of from 5-25% by w...	10/18/1983
4400362	Removal of nitrogen oxides from gas Gas containing nitrogen oxides is treated in two separate stages. In the first stage, the nitrogen oxides in the gas are reacted with sulfurous acid. The gaseous product of this reaction is reacted with an alkaline solution, typically caustic alkali. As a...	08/23/1983
4399012	Nitrogen fixation method and apparatus A method and apparatus for achieving nitrogen fixation includes a volumetric electric discharge chamber. The volumetric discharge chamber provides an even distribution of an electron beam, and enables the chamber to be maintained at a controlled energy to...	08/16/1983
4359505	Light colored roofing granules Roofing granules coated with insolubilized reaction product of a coating composition comprising water, kaolin clay, sodium silicate, titanium dioxide and ammonium nitrate or nitrate of one or more group 1A metals....	11/16/1982
4336305	Ceramic throw-away tips and process for producing the same A ceramic throw-away tip which comprises a hot-pressed sinter of Si3 N4 on the surface of which is a thin coating of at least one of Al2 O3 and AlON....	06/22/1982
4331556	Heat storage material A liquid melt becomes converted to crystalline form at a particular temperature either spontaneously or when artificially nucleated. The liquid releases heat at crystallization. If the liquid is in a supercooled state when it begins to crystallize, its te...	05/25/1982
4328196	Production of alkali metal products from alkali metal fluosilicate Alkali metal-containing salt products selected from the group consisting of alkali metal dihydrogen phosphate, alkali metal sulfate, alkali metal nitrate, and mixtures thereof, together with alkaline earth metal fluoride, are produced from alkali metal fl...	05/04/1982
4309396	Process for the absorption of nitrous gases Nitric oxides can be absorbed from gas mixtures containing nitric oxides (NO and NO2) and oxygen by absorption with aqueous solutions. According to the invention, the absorption is effected in bubble columns, superficial velocities of 2 to 30 c...	01/05/1982
4308246	Fixation of nitrogen using silicon oxide catalysts A process for the fixation of nitrogen comprising, combining a gaseous nitrogen and oxygen at a total pressure of above 100 atmospheres with a solid oxide which can produce a nitrate, in the presence of an oxide of silicon catalyst for the acceleration of...	12/29/1981
4305846	Solution preparation A solution containing nitrates of iron and chromium is produced by reacting metallic iron or an iron alloy with nitric acid in the presence of a hexavalent chromium compound. The solution is the starting material for making an iron-chrome oxide catalyst f...	12/15/1981
4299709	Tracer fluids for enhanced oil recovery Disclosed is a tracer fluid for use in connection with surfactant waterflooding or other chemicalized enhanced oil, recovery processes, and an oil recovery process using the fluid. Fluids containing easily identifiable components such as water-soluble, in...	11/10/1981
4297336	Preparation of solutions of basic aluminium nitrate A process for the preparation of stable, liquid aqueous solutions of basic aluminium nitrate (aluminium oxynitrate) suitable for spinning into fibres, if desired after incorporation of a polymeric spinning aid, which process comprises reacting an aluminiu...	10/27/1981
4294813	Process for forming calcium nitrite Disclosed herein is a process for preparing aqueous solutions of calcium nitrite by forming a solution of sodium nitrite and calcium nitrate; cooling the solution to precipitate sodium nitrate; admixing calcium hydroxide with the residual aqueous phase an...	10/13/1981
4294805	Method of leaching the contents of a can A method of leaching a material from a cavity having a closed or a partially closed top. The method consists of subjecting the liquid to a number of pressure cycles, each pressure cycle involving a decrease in pressure to cause boiling of the liquid, foll...	10/13/1981
4289736	Filtering of precipitating silica The addition of an excess of asbestos tailings in the course of the extraction of magnesium from asbestos tailings by digestion with an acid greatly facilitates the elimination of silica and other impurities by filtration of the resulting reaction mixture...	09/15/1981

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Class 423/395 - Nitrate