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| Number | Title | Issue Date |
| 7361318 | Sodium hydrogencarbonate crystal particles A method for producing sodium hydrogencarbonate crystal particles having a low caking property, which comprises lowering the potassium concentration in sodium hydrogencarbonate crystal particles having a mean particle diameter of from 50 to 500 μm to a level of at ... | 04/22/2008 |
| 7344688 | Process for treating alkali metals charged with tritium or components contaminated with alkali metals charged with tritium The invention relates to a process for treating alkali metals such as sodium charged with tritium or components contaminated with alkali metals such as sodium charged with tritium, in which the alkali metal is reacted with liquid water or water vapor, so as to obtai... | 03/18/2008 |
| 7122249 | Abrasion-resistant agglomerate mineral substance granule, powder comprising such granules and production method therefor Granule comprising an agglomerate of particles of a mineral substance. The agglomerate is coated with a monolithic outer layer, which provides it with improved abrasion resistance. Powder comprising granules according to the invention. Process for manu... | 10/17/2006 |
| 7045110 | High yield co-production of anhydrous hydrogen bromide and sodium bisulfate A batch process for co-producing anhydrous hydrogen bromide and a purified bisulfate salt comprising: (a) charging a batch reactor with a bromide salt slurry, wherein the slurry is more than 50% by weight bromide salt; (b) reacting the slurry with sulfuric acid in a... | 05/16/2006 |
| 7045111 | High yield co-production of anhydrous hydrogen bromide and sodium bisulfate A process for co-producing anhydrous hydrogen bromide and a purified bisulfate salt by (a) reacting a bromide salt with sulfuric acid to produce crude hydrogen bromide and crude bisulfate salt; (b) purifying the crude hydrogen bromide to produce anhydrous hydrogen b... | 05/16/2006 |
| 6994839 | Carbonate recycling in a hydrogen producing reaction A process for producing hydrogen gas from a reaction of an organic substance and a base with a recycling of a carbonate or bicarbonate by-product and a regeneration of the base. In one embodiment, reaction of an organic substance and a base produces hydrogen gas and... | 02/07/2006 |
| 6949226 | Sodium-based dechlorinating agent and waste treatment equipment A sodium-based dechlorinating agent is added to a flue gas; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water; water-insoluble constituents are separated from... | 09/27/2005 |
| 6919061 | In-situ method for treating residual sodium A unique process for deactivating residual sodium in Liquid Metal Fast Breeder Reactor (LMFBR) systems which uses humidified (but not saturated) carbon dioxide at ambient temperature and pressure to convert residual sodium into solid sodium bicarbonate. ... | 07/19/2005 |
| 6890497 | Method for extracting and sequestering carbon dioxide A method and apparatus to extract and sequester carbon dioxide (CO2) from a stream or volume of gas wherein said method and apparatus hydrates CO2, and reacts the resulting carbonic acid with carbonate. Suitable carbonates include, but are not ... | 05/10/2005 |
| 6699447 | Sodium bicarbonate production from nahcolite A method for producing sodium bicarbonate from a nahcolite deposit comprising injecting water or other aqueous solution at a temperature of at least 250° F. into the deposit, dissolving sodium bicarbonate in the hot water to form a production solution an... | 03/02/2004 |
| 6692716 | Method of formulating alkali earth salts Methodology for formulating sodium bicarbonate and potassium sulfate. In one embodiment, sodium sulfate and ammonium bicarbonate are reacted to form sodium bicarbonate with the remaining liquor or brine treated with sulfuric acid to remove carbonates with... | 02/17/2004 |
| 6667021 | Method for producing enhanced sodium carbonate crystals for making sodium bicarbonate n the manufacture of sodium carbonate having increased CO2 uptakes the carbonation reaction to form sodium bicarbonate is enhanced by the addition of particular amounts of a cationic quaternary amine, selected from the family of dialkylethoxyla... | 12/23/2003 |
| 6660049 | Process for control of crystallization of inorganics from aqueous solutions Process of crystallization of sodium bicarbonate from solution mined Nahcolite pregnant liquor comprising the use of from about 2 to 100 parts per million of lecithin, introduced full strength, made miscible in water with a soap or detergent, saponified w... | 12/09/2003 |
| 6616907 | Chemical preparation of chlorate salts A novel method of producing metal chlorates is described which involves the reaction of ammonium chlorate with metal carbonates and/or metal bicarbonates. The reaction yields extremely pure metal chlorate, as well as ammonia and carbon dioxide by-products... | 09/09/2003 |
| 6482379 | Sodium-based dechlorinating agent and waste treatment equipment A sodium-based dechlorinating agent g is added to a flue gas G6; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water i; water-insoluble constituents ... | 11/19/2002 |
| 6475458 | Method for formulating food grade sodium bicarbonate There is disclosed a method for formulating food grade sodium bicarbonate by purification of a sodium bicarbonate liquor where an initial saturated feedstock of sodium bicarbonate which contains sodium sulfate as an impurity is filtered to remove the impu... | 11/05/2002 |
| 6419887 | Process for the treatment of residual liquors from the ammoniation and carbonation of alkali metal salts A process for the treatment of residual liquors from the ammoniation and carbonation of alkali metal salts containing ammonium salts, sodium salts, soluble sodium bicarbonate, ammonium bicarbonate and water and producing purified ammonium salts, comprisin... | 07/16/2002 |
| 6352653 | Acid component-removing agent, method for producing it and method for removing acid components An acid component-removing agent which comprises sodium hydrogencarbonate having a volume-based mean particle diameter of from 1 to 9 μm as measured by a laser diffraction and scattering method.... | 03/05/2002 |
| 6322767 | Process for making sodium carbonate decahydrate from sodium carbonate/bicarbonate liquors A process for forming useful sodium salts by uniquely processing dilute brine solutions having sodium bicarbonate concentrations is disclosed. The dilute brine is reduced in sodium bicarbonate content to prevent precipitation of the sodium bicarbonate in ... | 11/27/2001 |
| 6270740 | Method of producing modified sodium carbonate crystals for the production of sodium bicarbonate An improved method of purifying sodium carbonate from a natural source whereby a dissolved sodium carbonate product is treated with a cationic compound, such as a quaternary amine, to react with carbon-containing contaminants and filtering the product. Th... | 08/07/2001 |
| 6251346 | Solution mining of carbonate/bicarbonate deposits to produce soda ash A solution mining process for recovering sodium values from an underground deposit of a sodium bicarbonate containing ore is disclosed. The process involves contacting the ore with an aqueous sodium carbonate-containing solution to produce a dilute brine ... | 06/26/2001 |
| 6106796 | Method of ammonium sulfate purification A process is provided for recovering sodium bicarbonate and ammonium sulfate from a solution containing sodium sulfate derived from a process for removing sulfur contaminants out of a gas with sodium bicarbonate reagent. Sodium bicarbonate is precipitated... | 08/22/2000 |
| 6022385 | Process for the manufacture of sodium carbonate crystals from minerals or solutions A method of producing sodium carbonate crystals from a sodium carbonate-containing solution including the steps of passing the sodium carbonate-containing solution to a precipitator, adding methanol to the sodium carbonate-containing solution in the preci... | 02/08/2000 |
| 5938969 | Fire suppressant powder A fire suppressant powder with particle sizes less than 5 μm is made by a chemical reaction between a gas or vapour of a first material and a vapour or an aerosol of a second material. For example an aerosol of sodium hydroxide droplets may be reacted wi... | 08/17/1999 |
| 5831123 | Process for producing a granulated material A process for producing a granulated material from a powder mixture containing at least two components, one of which is in crystal or crystalline form and at least one contains water of crystallization and/or is reactive, granulation is carried out in an ... | 11/03/1998 |
| 5811362 | Process for preparing a Ziegler-type spherical catalyst for alpha-olefin polymerization process A proces for preparing a spherical support for the polymerization of alpha-olefins from an ammonium dawsonite which is spray-dryed and formed into spherical particles which are then calcined and impregnated with titanium to produce a spherical catalyst of... | 09/22/1998 |
| 5800805 | Aerosol deodorant product This invention provides a deodorant composition in a dispensing container which is pressurized with an aerosol propellant. The primary ingredients of a typical product are particulate sodium bicarbonate, ethanol, volatile silicone oil and a suspending age... | 09/01/1998 |
| 5785868 | Method for selective separation of products at hydrothermal conditions Sodium and borate ions are separated in supercritical water by addition of dissolved CO2 to cause precipitation of carbonates and the formation of boric acid. Carbonates and boric acid are then recovered as separate products.... | 07/28/1998 |
| 5783159 | Inorganic impurities removal in soda ash solutions with carbon The present invention relates to a method for reducing and removing inorganic impurities in sodium solutions by contact with activated carbon. Preferably, the activated carbon is saturated with organics. The process can provide for significant reduction o... | 07/21/1998 |
| 5650141 | Bicarbonate salt-containing deodorant cosmetic stick product This invention provides a deodorant cosmetic stick product which has a translucent or transparent light transmitting appearance. The cosmetic stick has a content of ingredients such as sodium bicarbonate, propylene glycol, sodium stearate, Steareth-100, P... | 07/22/1997 |
| 5628990 | Anhydrous cosmetic product containing deodorant and desiccant ingredients This invention provides cosmetic deodorant stick, roll-on and cream formulations. An invention deodorant product comprises an organic matrix having a dispersed solids phase which includes discrete crystallites of bicarbonate salt ingredient and particulat... | 05/13/1997 |
| 5588713 | Process for making sodium bicarbonate from Nahcolite-rich solutions A process for making sodium bicarbonate from Nahcolite-rich solutions utilizes solubility suppression with addition of salt. Hot water pumped into a Nahcolite-rich formation, which may contain salt (NaCl) and other impurities in excess of 6% by weight, di... | 12/31/1996 |
| 5518727 | Ultrafine sodium bicarbonate powder This invention provides alkali metal bicarbonate powder consisting of a narrow size distribution range of ultrafine particles. The ultrafine powder has a large surface area, and provides enhanced reactivity in applications such as deodorization or neutral... | 05/21/1996 |
| 5449506 | Process for producing potassium carbonate A method for producing potassium carbonate using a continuous countercurrent exchange system. A continuous ion exchange system with resin in the ammonium form is flushed with a saturated potassium chloride solution which displaces the ammonium ion and rep... | 09/12/1995 |
| 5445805 | Large potassium bicarbonate crystals and process for the preparation thereof A large size, small surface area, granular crystalline potassium bicarbonate product suitable for application as an active ingredient in pharmaceutical oral unit dosage forms useful for the treatment of various degenerative bone and cardiovascular disease... | 08/29/1995 |
| 5441669 | Preventing potassium bicarbonate from caking Disclosed is a method of preventing potassium bicarbonate from caking. Anhydrous potassium carbonate is dispersed throughout the potassium bicarbonate immediately after it is manufactured. Preferably, about 0.1 to about 2.5 wt % of the anhydrous potassium... | 08/15/1995 |
| 5422087 | Free-flowing alkali metal bicarbonate powder This invention provides a free-flowing alkali metal bicarbonate composition, which has a content of an acidic inorganic compound such as boron oxide (B2 O3) or phosphorus pentoxide (P2 O5). The acidic inorganic ... | 06/06/1995 |
| 5411750 | Ultrafine sodium bicarbonate powder This invention provides alkali metal bicarbonate powder consisting of a narrow size distribution range of ultrafine particles. The ultrafine powder has a large surface area, and provides enhanced reactivity in applications such as deodorization or neutral... | 05/02/1995 |
| 5290322 | Process for the crystallization of sodium bicarbonate Process for the manufacture of sodium bicarbonate particles having an ovoid or spherical shape, the process preparing an aqueous solution of sodium bicarbonate, which is supersaturated; circulating the aqueous solution supersaturated in sodium bicarbonate... | 03/01/1994 |
| 5288472 | Process for the recovery of the sodium hydroxide and sodium chloride from the effluent of a diaphragm cell as solid sodium bicarbonate The present invention relates to a method and process for recovering solid sodium bicarbonate, from the effluent, of the cathode compartment of a diaphragm cell that contains sodium hydroxide and sodium chloride. The effluent is treated with carbon dioxid... | 02/22/1994 |
