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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8083815 | Process to prepare methanol and/or dimethylether A process to prepare methanol and/or dimethylether from a solid carbonaceous feedstock comprising the steps of (a) feeding an oxygen-comprising gas and the carbonaceous feedstock to a burner firing into a reactor vessel, (b) performing a pa... | 12/27/2011 |
| 7901473 | Pre-burning, dry process methodology and systems for enhancing solid fuel properties Measurements are taken of moisture, BTU/lb (British Thermal Units per pound), ash, forms of sulfur, volatile material, grindability, and absorption properties of any of a wide variety of mine-run solid fuels. Using that information, a dry electromagnetic process tec... | 03/08/2011 |
| 7766984 | Method of increasing carbon foam yield A method for increasing the yield of carbon foam is described. The method includes placing a foaming sheet over the top surface of the material to be foamed. In certain embodiments, the foaming sheet is placed over the top surface of particulate coal prior to and du... | 08/03/2010 |
| 7588608 | Cellular coal products and processes According to the present invention there is provided a porous coal-based material having a density of between about 0.1 g/cm3 and about 0.6 g/cm3 that is produced by the controlled heating of small coal particulate in a “mold” and under a n... | 09/15/2009 |
| 7578860 | Cellular coal products and processes According to the present invention there is provided a coal-based carbon foam having a density of between about 0.1 g/cm3 and about 0.8 g/cm3, preferably between about 0.2 g/cm3 and about 0.6 g/cm3 and most preferably betw... | 08/25/2009 |
| 7544222 | Activated, coal-based carbon foam An ablation resistant, monolithic, activated, carbon foam produced by the activation of a coal-based carbon foam through the action of carbon dioxide, ozone or some similar oxidative agent that pits and/or partially oxidizes the carbon foam skeleton, thereby signifi... | 06/09/2009 |
| 7524341 | Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal In drying coal to be used as fuel for a coal-fired boiler, the coal is dried at a temperature of 80 to 150° C. by using combustion exhaust gas having passed through an air heater for the coal-fired boiler. Moreover, after medium-quality or low-quality coal is heate... | 04/28/2009 |
| 7481855 | Carbon foam abrasives The incorporation or blending of from about 1 to about 10% by volume of a “carbide precursor” powder, preferably on the order of | 01/27/2009 |
| 7452389 | Carbon foam abrasives The incorporation or blending of from about 1 to about 10% by volume of a “carbide precursor” powder, preferably on the order of | 11/18/2008 |
| 7449035 | Reinforced designed cellular coal Coal-based cellular products that can be custom designed to have integral stiffeners or load paths, directed heat transfer paths, and/or directed mass transfer paths and methods for their production are described. Such design and production is made possible by the a... | 11/11/2008 |
| 7374590 | Reducing sulfur dioxide emissions from coal combustion A process of treating high sulfur coal to reduce sulfur dioxide emission when the high sulfur coal is burned comprising placing coal in pressure tank (16) of reduced pressure sufficient to fracture a portion of the coal by withdrawing ambient fluids trapped w... | 05/20/2008 |
| 7341102 | Flue gas injection for heavy oil recovery A variety of methods for thermal recovery of natural gas and bitumen from a formation containing the latter. In general, the methods incorporate a series of existing, but previously uncombined technologies. A modified flue gas from the steam generators conventionall... | 03/11/2008 |
| 7338542 | Designed cellular coal Coal-based cellular products that can be custom designed to have integral stiffeners or load paths, directed heat transfer paths, and/or directed mass transfer paths and methods for their production are described. Such design and production is made possible by the a... | 03/04/2008 |
| 7332002 | Low sulfur coal additive for improved furnace operation The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The... | 02/19/2008 |
| 7299869 | Carbon foam particulates and methods of using carbon foam particulates in subterranean applications The present invention relates to carbon foam particulates and their use in subterranean applications such as production enhancement and completion. One embodiment of the present invention provides a method of treating a subterranean formation using a servicing fluid... | 11/27/2007 |
| 7279017 | Method for converting heavy oil residuum to a useful fuel A method for enabling the use of heavy oil residuum by conversion to a useful product. The method, in one embodiment, involves the use of a heavy oil residuum which is substantially non flowable. The viscosity of the residuum is reduced by heat or a combination of h... | 10/09/2007 |
| 7270743 | Products produced form rapid thermal processing of heavy hydrocarbon feedstocks The present invention is directed to the upgrading of heavy hydrocarbon feedstock that utilizes a short residence pyrolytic reactor operating under conditions that cracks and chemically upgrades the feedstock. The process of the present invention provides for the pr... | 09/18/2007 |
| 7264878 | Laminated carbon foam sandwich for naval decking A laminate sandwich structure useful for, inter alia, decking for naval vessels, which includes a core formed of carbon foam having a ratio of compressive strength to density of at least about 7000 psi/g/cc. ... | 09/04/2007 |
| 7247368 | Stealth foam and production method Carbon foams exhibiting a dielectric constant of from about 2 to about 6 and simultaneously an electrical resistivity in the range of between about 1.E+00 ohm-cm and about 1.E+06 ohm-cm, demonstrate excellent radar emission absorptivity in the ... | 07/24/2007 |
| 7232606 | Sealant for high strength carbon foam A sealant useful for sealing the surfaces of carbon foams to provide a surface useful for, inter alia, composite tooling or other high temperature applications or for bonding of carbon foams together to form larger blocks. ... | 06/19/2007 |
| 7208023 | Dry dust control materials The present invention discloses methods to reduce dusting in bulk materials, such as coal. The method includes mixing with the bulk material either a fraction of the bulk material having an electrostatic charge opposite that of the remainder of the bulk material or ... | 04/24/2007 |
| 7195656 | Method for combustion of pulverized coal with reduced emissions Fuel compositions containing (a) pulverized coal; and (b) an oxygenate selected from glycerol, glycerol derivatives, propylene glycol, propylene glycol derivatives, ethylene glycol, ethylene glycol derivatives, fatty acid alkyl esters, fatty alcohols, and mixtures t... | 03/27/2007 |
| 7189327 | Use of anionic copolymers for enhanced recovery of useful coal and potassium chloride from screen bowl centrifuge A method of enhancing the recovery of useful coal or potassium chloride from screenbowl centrifuge separation operations comprising adding to the screenbowl centrifuge, from about 0.005 lbs active polymer/ton dry solids in centrifuge to about 0.70 lbs active polymer... | 03/13/2007 |
| 7147679 | Synthetic fuel production method A method of producing a synthetic fuel by treating fines of bituminous coal with an emulsion of a tall-oil mix, which may include enhancers that either increase the chemical change in the coal or reduce the cost of the synthetic fuel. Enhancers include poly vinyl ac... | 12/12/2006 |
| 7128767 | Method to upgrade low rank coal stocks The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are d... | 10/31/2006 |
| 7111575 | Synthetic fuel plant A self-contained, floating, waterway supplied and moveable synthetic fuel plant includes apparatus for receiving components of and for making synthetic fuel of coal and binder for energy consumers. Processes are disclosed. ... | 09/26/2006 |
| 7108800 | Method for preventing the agglomeration or generation of dust from a particulate material comprising coal A method of preventing the generation of dust or agglomeration of particulate material comprising coal by applying to the particulate material a mixture of from about 45 to about 90 weight percent of glycerin, from about 5 to about 50 weight percent of water, about ... | 09/19/2006 |
| 7094274 | Use of manganese compounds to improve the efficiency of and reduce back-corona discharge on electrostatic precipitators Manganese is added to a combustion fuel, combustion air, or the resulting combustion exhaust gas in order to improve the efficiency of an electrostatic precipitator in collecting the resulting fly ash. Further, manganese or other flame suppressant is added to a fuel... | 08/22/2006 |
| 7087174 | Enhanced recovery of useful coal, potassium chloride and borax from screen bowl centrifuge A method of enhancing the recovery of useful coal or potassium chloride or borax from screenbowl centrifuge separation operations comprising adding to the screenbowl centrifuge, from about 0.03 lbs active polymer/ton dry solids in centrifuge to about 0.70 lbs active... | 08/08/2006 |
| 7015254 | Description of an inorganic polymer “electret ”in a colloidal state along with the method of generating and applications The present invention includes an apparatus for generating an inorganic polymer electret in a colloidal state, the inorganic electret in a colloidal state itself, and applications for the inorganic electret in a colloidal state. The invention includes a method for g... | 03/21/2006 |
| 6968791 | Oxygen-enriched co-firing of secondary fuels in slagging cyclone combustors A method for operating a cyclone combustor having first and second burners in communication with a barrel includes: feeding a stream of a primary fuel and a primary oxidant having a first oxygen concentration into the first burner; feeding a stream of a secondary fu... | 11/29/2005 |
| 6964691 | Method of preparing a synthetic fuel from coal A method of preparing a synthetic fuel from coal comprising applying to the coal an aqueous emulsion of one or more reactive polymers and thoroughly mixing the coal to yield a complete reaction of the coal with the reactive polymers, wherein the reactive polymers ar... | 11/15/2005 |
| 6942707 | Valorization of by-products in the ecological coal transformation A coal transformation system comprises an ecological coal production unit for transforming raw coal into ecological coal. The production unit has an exhaust for carrying in a storage unit combustible, gaseous, waste by-products generated during the transformation of... | 09/13/2005 |
| 6910432 | Selective oxygen enrichment in slagging cyclone combustors A method for combusting a fuel in a cyclone combustor having a burner and a barrel includes: feeding a stream of the fuel into the barrel at the burner end of the barrel; feeding a stream(s) of a first oxidant (e.g., air) having a first oxygen concentration into the... | 06/28/2005 |
| 6878174 | Stabilizing thermally beneficiated carbonaceous material A method of stabilizing a thermally beneficiated carbonaceous material is disclosed. The method includes the steps of supplying a charge of the carbonaceous material at an elevated temperature to a process vessel to form a packed bed and cooling the carbonaceous mat... | 04/12/2005 |
| 6869455 | Carbon foam abrasives The incorporation or blending of from about 1 to about 10% by volume of a “carbide precursor” powder, preferably on the order of | 03/22/2005 |
| 6860911 | Synfuel composition and method of using same The present invention re lates to a liquid synfuel additive composition which is used as an additive to coal fines to enhance the complete combustion of the coal after turning it into a synthetic fuel. The composition is a chemical change agent in that it converts t... | 03/01/2005 |
| 6861151 | Reinforced designed cellular coal Coal-based cellular products that can be custom designed to have integral stiffeners or load paths, directed heat transfer paths, and/or directed mass transfer paths and methods for their production are described. Such design and production is made possible by the a... | 03/01/2005 |
| 6860910 | Carbon foam abrasives The incorporation or blending of from about 1 to about 10% by volume of a “carbide precursor” powder, preferably on the order of | 03/01/2005 |
| 6849098 | Composite tooling Carbonaceous, composite tooling fabricated from pitch-based or coal-based cellular or porous products, “carbonaceous foams” having a density of preferably between about 0.1 g/cm3 and about 0.8 g/cm3 that are produced by: 1) conventional pit... | 02/01/2005 |
