Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7294314 | Heat exchangers with novel ball joints and assemblies and processes using such heat exchangers What is disclosed herein deals with low to medium pressure, high temperature, all ceramic, air-to-air, indirect heat exchangers, novel ball joints, high load-bearing ceramic tube sheets, and tube seal extenders for ceramic tubes that are useful in such heat exchange... | 11/13/2007 |
| 5815946 | Method for dehydrating wet coal A process is described whereby wet coal may be dehydrated and inhibited against rehydration by immersing in a bath of molten paraffin hydrocarbon for a sufficient period of time to evaporate and expel inherent water from the coal. The hydrocarbon then inh... | 10/06/1998 |
| 5032146 | Low-rank coal oil agglomeration A low-rank coal oil agglomeration process. High mineral content, a high ash content subbituminous coals are effectively agglomerated with a bridging oil which is partially water soluble and capable of entering the pore structure, and usually coal derived.... | 07/16/1991 |
| 5015366 | Process and apparatus for coal hydrogenation In a coal liquefaction process an aqueous slurry of coal is prepared containing a dissolved liquefaction catalyst. A small quantity of oil is added to the slurry and then coal-oil agglomerates are prepared by agitation of the slurry at atmospheric pressur... | 05/14/1991 |
| 4849021 | Process for producting coal fillers A process for producing coal fillers, which comprises the steps of: (a) carbonization step, which comprises carbonizing crushed coal particles having a particle size of not more than 10 mm and an ash content of not more than 10% by weight by thermal decomposit... | 07/18/1989 |
| 4758332 | Method of separating carbonaceous coal from an aqueous coal slurry In a method of agglomerating carbonaceous coal comprising first agglomerating impurity liberated carbonaceous coal, from an impurity liberated coal slurry, with agglomerating oil to form open structured, chain-like, micro-agglomerates and then forming rel... | 07/19/1988 |
| 4734206 | Method for separating coal particles from an aqueous slurry The invention relates, in one embodiment, to a method for separating coal particles from an aqueous slurry in which a multiple emulsion of oil in water is added to the aqueous slurry, the mixture is agitated to form agglomerates of coal particles, and the... | 03/29/1988 |
| 4648962 | Method of breaking down chemisorption bond of clay-containing heavy oil water emulsions Persistent chemisorption bonds of clay solids in clay-containing heavy oil and water emulsions, from oil sands, heavy oil or conventional oil wells, are broken down by mixing the emulsion with an aqueous mixture of coal particles so that the mixture has a... | 03/10/1987 |
| 4484928 | Methods for processing coal Methods of converting raw coals into low ash fuels which are competitive with the heavier grades of petroleum-based fuels and into other products. The raw coal is comminuted in aqueous slurry until resolved into separate, particulate phases of coal and mi... | 11/27/1984 |
| 4448585 | Process for forming stable coal-oil mixtures A process for forming a coal-oil mixture fuel slurry of enhanced stability comprising the steps of: (1) contacting an aqueous slurry of coal particles containing ash and iron pyrite mineral matter with a promoting amount of at least one conditioning agent... | 05/15/1984 |
| 4415337 | Method for producing agglomerate particles from an aqueous feed slurry comprising finely divided coal and finely divided inorganic solids An improved method for producing coal agglomerates from an aqueous feed slurry containing finely divided coal and finely divided inorganic solids, the method consisting essentially of mixing a quantity of oil equal to from about 25 to about 75 percent of ... | 11/15/1983 |
| 4396396 | Deashing of coal by the oil agglomeration process A method of deashing coal wherein the coal is wetted with hydrocarbon liquid to form agglomerates and the hydrophilic agglomerates are then separated from a water and ash phase to yield deashed coal agglomerates. The hydrocarbon liquid is then recovered f... | 08/02/1983 |
| 4389306 | Process for removing ash from coal A process for removing ash from coal comprising the steps of pulverizing the coal to fine particles, admixing water with the finely divided coal to prepare an ash-containing slurry of finely divided coal, mixing with the slurry an oil and seeds in the for... | 06/21/1983 |
| 4360422 | Process for selectively aggregating coal powder A process for removing ash from raw coal is described, comprising adding mineral oil to a slurry composed of a coal powder and water, granulating the coal by stirring to form granules, and separating the resulting coal granules by a screen, wherein the im... | 11/23/1982 |
| 4355999 | Process for agglomerating coal This invention provides a method for reducing the amount of oil required to form coal-oil agglomerates comprising the steps of (a) forming a slurry of water and coal particles; (b) contacting the slurry with an amount of hydrocarbon oil to form coal-oil a... | 10/26/1982 |
| 4332593 | Process for beneficiating coal Mine run coal is pulverized and the extended surfaces of the coal particles are rendered hydrophobic and oilophilic by a chemical bonding and graft polymerization reaction with a water insoluble organic polymerizable monomer under peroxidation influence i... | 06/01/1982 |
| 4331447 | Coal treatment for ash removal and agglomeration Coal particles can be agglomerated with simultaneous ash removal therefrom by adding an oil fraction to an aqueous slurry of coal particles which contains a surfactant and optionally an inorganic electrolyte.... | 05/25/1982 |
| 4326855 | Process for beneficiating and stabilizing coal/oil/water fuels A coal slurry containing 10-60% solids by weight is optionally first coarsely ground to about 20-80 mesh. Contaminant matter released thereby, may be separated by conventional means such as froth flotation which would eliminate a large proportion of the a... | 04/27/1982 |
| 4311488 | Process for the upgrading of coal In a process for upgrading an aqueous slurry of fine coal by agglomerating coal particles and separating the agglomerates from the slurry the proportioning of the amount of binder used to agglomerate the coal can be substantially optimized by correlating ... | 01/19/1982 |
| 4306883 | Process for forming coal-oil mixtures under selected conditions of temperature and shear An improved technique is provided for forming coal into a stabilized coal-oil mixture. Coal, in a fine mesh size, is admixed with oil, a monomeric compound, a reaction initiator and a reaction catalyst at elevated temperatures and under a condition of low... | 12/22/1981 |
| 4295858 | Process for removing sulfur from coal A process for reducing the sulfur and ash content of coal comprising the steps of: (1) contacting coal particles containing ash and iron pyrite mineral matter with a promoting amount of at least one conditioning agent, said conditioning agent having a fer... | 10/20/1981 |
| 4282004 | Process for agglomerating coal A method of agglomerating coal particles, a portion of the coal particles having a fine particle size comprising (a) separating at least part of the coal particles having a fine particle size to provide a first fraction of coal particles having a reduced ... | 08/04/1981 |
| 4272250 | Process for removal of sulfur and ash from coal A process for reducing the sulfur and ash content of coal particles wherein coal particles are treated in an aqueous slurry with a minor amount of hydrocarbon oil to form coal-oil aggregates having modified particle size and density characteristics. The c... | 06/09/1981 |
| 4270926 | Process for removal of sulfur and ash from coal A process for reducing the sulfur and ash content of coal wherein coal particles are treated in an aqueous slurry with a minor amount of hydrocarbon oil to form coal-oil aggregates. The coal-oil aggregates are separated from ash and mineral matter in the ... | 06/02/1981 |
| 4270927 | Process for removal of sulfur and ash from coal A process for reducing the sulfur and ash content of coal wherein coal particles are treated in an aqueous slurry with a minor amount of hydrocarbon oil to form coal-oil aggregates having modified particle size and density characteristics. The coal-oil ag... | 06/02/1981 |
| 4255155 | Process for agglomerating coal This invention provides a method for reducing the amount of hydrocarbon oil required to form coal-oil agglomerates comprising the steps of (a) combining a first coal fraction comprising predominately coarse particles, and a second coal fraction comprising... | 03/10/1981 |
| 4255156 | Process for removal of sulfur and ash from coal A process for reducing the sulfur and ash content of coal comprising: treating coal particles in a hydrocarbon oil slurry with minor amounts of a conditioning agent and water to effect agglomeration of ash and pyritic sulfur mineral matter; separating the... | 03/10/1981 |
| 4249910 | Process for removing sulfur from coal A process for reducing the sulfur and ash content of coal comprising the steps of: (1) contacting coal particles containing ash and iron pyrite mineral matter with a promoting amount of at least one conditioning agent capable of modifying or altering the ... | 02/10/1981 |
| 4248698 | Coal recovery process Agglomeration type processes for recovering coal in which calcium oxide is employed to bring about an effective separation of pyritic sulfur from the coal.... | 02/03/1981 |
| 4248697 | Oil agglomeration process In methods for producing agglomerate particles from aqueous slurries containing from about 10 to about 40 weight percent solids, the solids comprising finely divided carbonaceous solids and finely divided inorganic solids, by mixing the aqueous slurry wit... | 02/03/1981 |
| 4217110 | Process for preparing a suspension of particles in a hydrocarbon oil Coal particles suspended in water are agglomerated with a binder and the agglomerates are separated from the water and disintegrated in a liquid fuel.... | 08/12/1980 |
| 4209301 | Treatment of coal slurries A process of agglomerating coal from coal fines is disclosed, wherein an aqueous slurry of coal fines is mixed with oil without intensive agitation, and thereafter the resulting coal fines agglomerates are removed from the slurry. The process unexpectedly... | 06/24/1980 |
| 4204840 | Process for removing sulfur from coal A process for reducing the pyritic sulfur content of coal comprising the steps of: (1) contacting an aqueous slurry of water, an alkaline earth metal base and pyrite-containing coal at elevated temperature with oxygen, said alkaline earth metal base being... | 05/27/1980 |
| 4153419 | Agglomeration of coal fines Process for the agglomeration of coal fines characterized by the staged addition of an aqueous emulsion of an oil fraction to an aqueous slurry of the fines.... | 05/08/1979 |
| 4126426 | Agglomerating coal slurry particles A process for preparing a solid load of coal from an aqueous slurry of coal particles by dividing the slurry into a first fraction containing relatively small particles and a second fraction containing relatively large particles, agglomerating the particl... | 11/21/1978 |
| 4080176 | Process for the beneficiation of solid fuel The invention relates to a process for the beneficiation of solid fuel, in which a heat treatment at elevated pressure is applied to an aqueous suspension of the solid fuel in a finely divided form in the presence of an additive which, under the prevailin... | 03/21/1978 |
| 4021206 | Separating coal particles from water The invention relates to a process for separating coal particles in a coal/water slurry from water of the slurry by separating the larger coal particles with a relatively small quantity of water from the smaller coal particles with a relatively large quan... | 05/03/1977 |
| 4018571 | Treatment of solid fuels Low rank solid fuels are upgraded by heating a mixture of particulate fuel and water to a temperature between 300° F. and the critical temperature of water under a pressure sufficient to maintain substantially all of the water in liquid state, cooling th... | 04/19/1977 |
