Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6213031 | Method of cooling a grate for a furnace and grate for a furnace To cool a grate having alternately fixed and movable rows (1, 1') of grate bars (2), cooling liquid is sprayed into cavities (7), open at the bottom, of the grate bars (2) from spray tubes (10) situated in the underblast region (8) and in the process vapo... | 04/10/2001 |
| 6125774 | Industrial waste combustion process A process for feeding solid industrial and special waste to combustion installations. The waste materials are separated from the combustion chamber by a lock system, are comminuted and homogenized in an inert-gas atmosphere.... | 10/03/2000 |
| 6066771 | Smelting of carbon-containing material A process for treating carbon-containing material contaminated with toxic elements utilises smelting of the material in a top-submerged lancing reactor. The material has its carbon content present as elemental or free carbon. Smelting is conducted so as t... | 05/23/2000 |
| 6058859 | Refractory support device and associated method A device for supporting refractory material in a furnace environment is provided. In one embodiment, the supporting device is fabricated from individual pieces which are connected to produce a functional supporting device. The material supporting device p... | 05/09/2000 |
| 6035791 | Process for the recycling of treated wood and the installation for the application of the process Apparatus for processing and recycling CCA (copper, chrome, arsenic) treated wood chips that includes a vertical reaction chamber into which a continuous stream of wood chips is poured. Hot gases at about 400° C. are introduced into the bottom of the col... | 03/14/2000 |
| 5958252 | Waste treatment device and method employing the same A waste treatment device includes a waste holding tank for receiving waste, a solids-gas processor operably connected to the waste holding tank, an aqueous holding tank operably connected to the processor and the waste holding tank and an aqueous purifica... | 09/28/1999 |
| 5819672 | Treatment to enhance heat retention in coal and biomass burning furnaces The present invention provides a method and composition for on-line treatment of furnace walls that are subject to deposition of highly reflective ash. The method involves exposing the walls to a darkening agent, or a combination of a darkening agent and ... | 10/13/1998 |
| 5802992 | Sludge processor A method for drying and heating sludge to remove pathogens and to dry the sludge into a powder form in an elongate housing having an endless chain conveyor inside. The method includes slowly urging solid material from one end of the housing to the other w... | 09/08/1998 |
| 5794549 | Combustion optimization system Information relating to combustion conditions within a fossil-fueled boiler that includes a plurality of burners adapted to produce flames combining to form a fireball is provided by acquiring data relating to the physical and temperature characteristics ... | 08/18/1998 |
| 5651321 | Method of and means for producing combustible gases from low grade fuel In accordance with the present invention, a method for supplying solid material such as hot carbonaceous material from a pyrolyzer or reactor to a furnace, is provided comprising providing a screw conveyor for receiving the solid carbonaceous material fro... | 07/29/1997 |
| 5623883 | Kiln for calcination of a powder An improved kiln for the calcination of a powder comprises a directly heated rotary kiln in which at least a part of the inner circumferential wall is equipped with a plurality of protrusions. The protrusions are shaped so that the powder is substantially... | 04/29/1997 |
| 5609113 | Particulate waste wood fuel, method for making particulate waste wood fuel, and a method for producing energy with particulate waste wood fuel A particulate waste wood fuel comprising wood particles comprising less than 20% water by weight and having a particle size distribution suitable for combustion of the particulate wood fuel in a particulate fossil fuel suspension furnace. A method for mak... | 03/11/1997 |
| 5606924 | Process for regulating individual factors or all factors influencing combustion on a furnace grate To carry out a process for regulating individual factors or all factors influencing combustion on a furnace grate, a radar device is provided primarily. This radar device serves to detect the three-dimensional distribution of the fuel mass on at least one... | 03/04/1997 |
| 5516277 | Process of fuel combustion A process for burning fuel includes the following steps: burning a fuel; putting an inner shell formed in a course of soot formation into contact with other components in a combustion gas to promote a chemical reaction of the other components in the combu... | 05/14/1996 |
| 5495813 | Combustion method and apparatus Apparatus and method for incinerating waste whose ease of burning may vary form batch to batch, wherein burning is conducted in a main combustion region to form combustion products containing combustibles and in a secondary combustion zone which is suppli... | 03/05/1996 |
| 5435258 | Method and apparatus for regenerating desiccants In a method and apparatus for regenerating particles of desiccant rendered ineffective by at least one contaminant capable of being burned, the particles of desiccant are placed into a hollow container formed with a cylindrical perforated wall, the hollow... | 07/25/1995 |
| 5394811 | Process for drying a water-containing fuel in direct contact with a hot granular solid residue Dried fuel is at least partly combusted, gasified or carbonized in the presence of cooled solid residue in a reactor. Hot solid residue, which is at temperatures in the range from 500° to 1200° C., is withdrawn from the reactor and is mixed with water-c... | 03/07/1995 |
| 5381742 | Waste liquid evaporator The invented waste liquid evaporator includes a burner for producing a flame and a liquid injector for injecting waste liquid directly into the flame. The flame vaporizes the liquid, burns pollutants in the liquid, and produces a vapor exhaust stream. A t... | 01/17/1995 |
| 5380342 | Method for continuously co-firing pulverized coal and a coal-water slurry A process is provided for burning a coal water slurry comprising providing clean coal fines of less than 100 mesh at about 50 weight % and water at about 50 weight % by co-firing the coal water slurry in a continuous stream with a separate stream of pulve... | 01/10/1995 |
| 5359945 | Balanced pressure solid fuel heating unit A method and apparatus for a pellet fuel burning heating unit for burning corn or wood pellets having a balanced pressure system having a four-way split combustion intake airstream. The invention includes a combustion air blower system for providing combu... | 11/01/1994 |
| 5303661 | Dry process for speedy and continuous recycling discarded rubber A dry process for speedy and continuous treatment of discarded or used rubber waste is disclosed wherein discarded rubber waste is pulverized into particles of 20-40 mesh and is transmitted to an air tight vessel in which the pulverized rubber waste is in... | 04/19/1994 |
| 5277135 | Controlling concentration of chemical treatment for flue gas reduction of the oxides of nitrogen In a furnace (boiler) installation where oxides of nitrogen are to be reduced to elemental nitrogen by treatment with a reactant such as a solution of urea, the desired amount of reactant (dependent on furnace specifics) is determined by comparing the flu... | 01/11/1994 |
| 5272833 | Soil remediation apparatus and method for same An apparatus for remediating soil contaminated with combustible pollutants comprising means for initially heating the contaminated soil to a temperature sufficient to vaporize contaminants present therein, means for feeding the contaminated soil to the in... | 12/28/1993 |
| 5264654 | Method and apparatus for processing contaminated soils A method of and apparatus for decontaminating contaminated soils and similar materials, the method includes (a) drying and comminuting contaminated soil and similar material in a mill through which a flow of hot gases is passed to provide a mixture of sol... | 11/23/1993 |
| 5255615 | System for discharging bottom ash from steam-producing boilers A system for discharging ash comprises a hopper provided with a system of hydraulically activated valves having the function of separating the hopper environment from the extractor environment, thereby creating an accumulation store inside the hopper whic... | 10/26/1993 |
| 5243922 | Advanced staged combustion system for power generation from coal A process and apparatus for generating electricity from coal comprising a vertically stacked, three-stage combustor in which a sorbent is calcined in a calciner zone of the combustor and transferred to a carbonizer zone disposed below the calciner zone, c... | 09/14/1993 |
| 5235611 | Stepped end rotary furnace The invention is directed to improved centrifugal rotary electric furnaces which are used for the heating and or fusion of minerals, such as quartz, and other materials having a high melting point. The furnace includes a generally cylindrical furnace shel... | 08/10/1993 |
| 5224432 | Method for retorting organic matter A method of retorting organic matter including the steps of advancing the organic matter through a chamber in the absence of oxygen, sensing the temperature in the chamber at a plurality of locations along the length of the chamber, individually adjusting... | 07/06/1993 |
| 5217624 | Method for the disposal of aqueous sewage sludge A combination of a dehydration process for dehydrating sewage sludge by mixing a quicklime-containing material with the sludge, a cement conversion process for introducing the solids produced by the dehydration process into a cement kiln with other cement... | 06/08/1993 |
| 5211723 | Process for reacting pumpable high solids sewage sludge slurry This invention relates to a novel pumpable sewage sludge fuel and process for burning it. An aqueous slurry of sewage sludge is dewatered and dried to a solids content in the range of about 50 to 99 wt. % in a drying zone in the absence of free-oxygen con... | 05/18/1993 |
| 5196648 | Method for deslagging a cyclone furnace A method and apparatus for deslagging a cyclone furnace in which a series of flexible hollow tubes are inserted into the combustion chamber and the explosive charges in each hollow tube are detonated sequentially. Each of the hollow tubes is biased outwar... | 03/23/1993 |
| 5154128 | Process for salvaging waste and device for preparing said waste The waste (a) is dried in direct heat exchange with hot exhaust gas (r) from a coal-burning plant (10) and both the gas mixture (g) produced during drying (3) and the dry material (t) produced from the waste are fed into the coal-burning plant.... | 10/13/1992 |
| 5123362 | High temperature-generating method and application thereof A flame-ionizing material formed by molding a composition comprising a magnetic substance and a substance, the specific electric resistance of which is varied under irradiation with radioactive rays, and sintering the molded body in an oxidative atmospher... | 06/23/1992 |
| 5115749 | Method of attaining uniform flow in elongated fluidized bed furnace A method of attaining a uniform flow in an elongated fluidized bed furnace, used for the purpose of preventing the expansion and uniting of bubbles in the fluidized bed, and setting the fluidized bed in a uniform flow state, so as to keep the flow conditi... | 05/26/1992 |
| 5112216 | Pulp mill gas combustion process A process and apparatus for the combustion in an incineration device of noxious noncondensable gases produced in a pulp mill comprising the use of a novel injection nozzle, said nozzle comprising a tubular conduit means, an insulating inner jacket surroun... | 05/12/1992 |
| 5044288 | Method and apparatus for the efficient combustion of a mass fuel A grate assembly consisting of a means for receiving a mass fuel and combusting the mass fuel on a surface with the addition of a combustion gas, and discharging the remaining residue. A separate means for injection of a mix gas at multiple points along t... | 09/03/1991 |
| 5029534 | Wrap-around heat and smoke extractor This invention relates to a method and apparatus for the extraction of heat and smoke from a fuel burn in a firebox. The design is for the firebox exhaust area to be wrapped with its own hot exhaust gases, for smoke extraction, and then, for heat extracti... | 07/09/1991 |
| 5005494 | Apparatus and method for high temperature disposal of hazardous waste materials An improved method and plasma torch incinerator or reactor in which the incinerator uses a rotating, materials-receiving drum or chamber for receiving the hot plasma of a plasma torch. By properly constructing the inner surface of the rotatable drum and b... | 04/09/1991 |
| 5003891 | Pulverized coal combustion method The known pulverized coal combustion method including the steps of separating pulverized coal mixture gas ejected from a vertical type coal grinder into thick mixture gas and thin mixture gas by a distributor, and injecting these thick and thin mixture ga... | 04/02/1991 |
| 4989523 | Method and apparatus for extracting heat from a combustible material A method and apparatus for extracting heat from a combustible material are disclosed which include the formation of a solid material strip of the combustible material, the formation of a series of spaced holes in the material strip, and the combustion of ... | 02/05/1991 |
