Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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 |
| 8013205 | Method for treating fly ash A method for treating fly ash from incineration plants having at least one combustion chamber includes precipitating fly ash in a dust separator, and treating the fly ash using a gaseous reducing agent at a temperature between 600 and 700° C. so as to selectively c... | 09/06/2011 |
| H2198 | Multi-stage pyrolysis systems for treating chlorine contaminated wastes A method of decontaminating solids contaminated with chlorinated hydrocarbons includes a first step of heating the contaminated solids at a temperature high enough to volatize chlorine contaminates but below a temperature range favorable to the formation of the diox... | 08/07/2007 |
| 7034198 | Method for decomposing plastic A conventional method of pyrolytically decomposing plastic to make low-molecular compounds is poor in efficiency of use of energy due to high heating temperatures (at least 600° C. and 800° C. at maximum). The invention provides that a functional powder is ... | 04/25/2006 |
| 6632973 | Method for decomposing or oxidizing dioxins and/or poly chlorinated biphenyls contained in liquid An object of the present invention is to provide a simple method which can efficiently convert dioxins and/or PCBs contained in liquid into unharmful substances. Such a method according to the present invention is by introducing a liquid containing dioxin... | 10/14/2003 |
| 6137027 | Solid waste treatment agent and treatment method of solid waste Disclosed herein are a solid waste treatment agent comprising phosphorous acid or a derivative thereof and/or hypophosphorous acid or a derivative thereof, or phosphorous acid or a derivative thereof and/or hypophosphorous acid or a derivative thereof, an... | 10/24/2000 |
| 6084149 | Method and apparatus for decomposing hazardous substances using high frequency waves to provide environmentally safe fixation ashes in an incinerator A melting furnace that incorporates the autoclave theory and is equipped with a high-frequency (horizontal wave) device for incinerating material and for thermal decomposition and recrystallization of organic and inorganic hazardous compounds contained in... | 07/04/2000 |
| 5848960 | Process for vitrifying residues from flue gas cleaning To vitrify chlorine-containing residues from flue gas cleaning, in particular filter dust and residues from the flue gas scrubber, the residues are melted in a melting furnace (8) and then discharged. To condition the melt, alkali-containing fluxes are ad... | 12/15/1998 |
| 5810920 | Method for treating wastes To treat waste containing harmful metals such as lead, cadmium, mercury, chromium, copper, nickel, zinc, etc., the waste is mixed with a treating agent containing, as the essential constituent component, solid acid(s) and/or cement and additionally a caki... | 09/22/1998 |
| 5765489 | Process for the treatment of solid residue from refuse incineration plants, and apparatus for performing the process A process for the treatment of solid residue from a refuse incineration plant, involving: melting the solid residue in a first heating chamber under oxidizing conditions to provide a melt; reducing any heavy metal compounds present in the melt to elemental met... | 06/16/1998 |
| 5700107 | Method of soil remediation A method of remediating soil contaminated with inorganic and organic pollutants as disclosed. A method comprises treating the soil with a complexing agent capable of chelating the pollutants and a matrix-generating agent for authigenically generating with... | 12/23/1997 |
| 5630785 | Process for the treatment of waste products In this process for the treatment of waste products, the waste products are separated in a first and a second group with respective pH-value of maximum 7 or higher than 7. The waste products of the first group are made increasingly acid whereas those of t... | 05/20/1997 |
| 5626552 | Method of waste disposal A method for solidifying industrial waste containing various toxic metals and other substances without fail and stabilizing the waste so as to prevent the toxic metals, particularly lead, from leaching out. The method comprises mixing a waste containing c... | 05/06/1997 |
| 5615626 | Processing of municipal and other wastes The process provides for disposal of waste materials, including municipal waste such as garbage, industrial wastes, waste materials including rubber and plastics based materials, and ash waste from municipal waste incinerators and toxic waste incinerators... | 04/01/1997 |
| 5607654 | Method for minimizing environmental release of toxic compounds in the incineration of wastes A method and apparatus for minimizing the environmental release of acids and toxic organic compounds from a waste incinerator-air pollution control train. The apparatus comprises an incinerator, a gas cooling means such as a waste heat boiler or quench ch... | 03/04/1997 |
| 5550314 | Method of environmentally stabilizing lead paint contaminated debris A method of immobilizing or stabilizing lead paint contaminated construction or demolition debris in which the debris is shredded, mixed with water and a chemical, such as fly ash, lime, Portland cement or kiln dust. The treated debris is then collected a... | 08/27/1996 |
| 5516974 | Treating agent for making harmless and immobilizing fly ash containing noxious metals and a method for the immobilizing treatment using it The present invention provides an immobilizing agent for making harmless the detrimental metals contained in fly ash formed from an urban dust incinerating plant and a method for immobilizing the fly ash. The treating agent according to the present invent... | 05/14/1996 |
| 5512257 | Process for the treatment of flue particulates Fly ash from incineration plants is treated with an acidic aqueous solution for the purpose of removing heavy metals. The residual solid matter is filtered. The filtration residue is treated with a precipitating agent for heavy metals. The thereby obtaine... | 04/30/1996 |
| 5501721 | Process for producing pig iron and cement clinker In a process for the preparation of pig iron and cement clinker in a fusion gasifier (3) in which the charge is at least partly preheated and possibly deacidified and subjected to preliminary reduction or is used in the form of scrap, coal is blown into a... | 03/26/1996 |
| 5496392 | Method of recycling industrial waste The present invention relates to a process for the production of metal alloys, metal oxides and slag-based products, such as mineral wool, from industrial waste materials. More specifically, the present invention relates to a process for recycling industr... | 03/05/1996 |
| 5280149 | Process for treating highly environmentally polluting residues The subject of the present invention is a process for treating highly environmentally polluting residues such as for example residues derived from dry or wet filtration. The process consists in mixing the residues with a product containing iron oxide, in ... | 01/18/1994 |
| 5276250 | Process for decomposing polyhalogenated compounds The invention relates to a process for the decomposition of polyhalogenated aliphatic compounds having 1 to 8 carbon atoms, polyhalogenated cycloalkyl compounds having 5 to 8 carbon atoms and polyhalogenated aromatic compounds having at least 5 carbon ato... | 01/04/1994 |
| 5245114 | Immobilization of lead in bottom ash Bottom ash arising from solid waste combustion has lead (Pb) sufficient quantity to sometimes fail the EPA TCLP test. Addition of water-soluble phosphate, especially phosphoric acid, increases the immobilization of lead (Pb) so as to make such residues in... | 09/14/1993 |
| 5220112 | Fixation of heavy metals in municipal solid waste incinerator ash Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills can under mild acid conditions leach lead and cadmium. A process for stabilizing lead in this fly ash is presented which involves calcining a mixture of the fly as... | 06/15/1993 |
| 5220111 | Fixation of heavy metals in scrubbed municipal solid waste incinerator ash Fly ash generated from incineration of municipal solid waste (MSW) when placed in landfills under mild acid conditions can leach lead and cadmium. A process for stabilizing heavy metals in this fly ash is presented which involves calcining in the presence... | 06/15/1993 |
| 5167711 | Low-temperature ashing of hazardous plastic waste System and method for low temperature treatment of organic wastes containing potentially toxic concentrations of metals is described which comprises forming the waste material into pellets of preselected size, mixing the pellets with inert material, incre... | 12/01/1992 |
| 4822379 | Solid fuel composition from waste products A solid fuel comprised of waste materials and a method of using the same are disclosed. The composition is made up of a heating value component, a neutralizing component and a nuisance waste component. Each of these components is a material which is readi... | 04/18/1989 |
| 4793270 | Incineration of waste materials In the conventional incineration of solid waste materials, flyash present in the combustion products gas stream catalyzes the formation of toxic dioxins from chlorinated organic materials. By providing a catalyst poison, such as carbon disulphide, in asso... | 12/27/1988 |
| 4780135 | Process for the detoxification of steel plant wastes A technique for rendering toxic metals (chromium, lead, cadmium and arsenic) contained in steel plant furnace dust innocuous and suitable for burial with minimal adverse environmental impact. Pelletized iron oxide containing dust is introduced into a rota... | 10/25/1988 |
| 4737356 | Immobilization of lead and cadmium in solid residues from the combustion of refuse using lime and phosphate Solid residues arising from the burning of solid wastes have lead and cadmium sufficiently insolubilized to pass the EPA toxicity test only where the pH in the EPA test is between 7.5 and 12.0. Addition of water soluble phosphate, especially phosphoric ac... | 04/12/1988 |
| 4702178 | Emergency exhaust system for hazardous waste incinerator An emergency exhaust system (59) is provided for a mobile incineration system (10). A hinged gate (76) controls access to the emergency exhaust system (59), and operates only upon the sensing of a malfunction in one of a plurality of critical incineration... | 10/27/1987 |
| 4676960 | Process for concentrating waste products arising during the manufacture of carbon electrodes The solid, liquid and gaseous waste products which arise during the manufature of carbon electrodes are concentrated. First, the solid electrode waste is mixed with the carbon-rich dusts from crushing operations, and with lime or lime and gypsum (from a wet ... | 06/30/1987 |
| 4615809 | Method for stabilization of sludge A method and means for the stabilization of organic sludges that includes combining the sludge with Portland cement, fly ash, calcium sulfate dihydrate, and lime, optimally with stabilizing agents such as clay, recycled rubber, and asphaltene, and an adso... | 10/07/1986 |
| 4601832 | Method of processing waste materials, particularly sludge containing noxious metals A noxious metal(s) containing waste material is treated with an acid solution of a metal of group VIIa or VIII of the Periodical System, preferably iron or manganese. Subsequently, the metal of group VIIa or VIII dissolved in the acid is precipitated as a... | 07/22/1986 |
| 4473519 | Method of agglomeration of fly ash into pellets Fly ash is agglomerated into pellets in order to render it environmentally harmless and suitable for dumping. The fly ash is mixed with water in an unclassified condition and formed into green pellets which are heated in a two-stage heating process. In th... | 09/25/1984 |
| 4437417 | Environmentally safe process for disposing of toxic inorganic CN-containing sludge Toxic inorganic CN-containing sludge as produced by treating at least a portion of the water used to quench cool and/or scrub the hot raw effluent gas stream from a partial oxidation gasifier with a ferrous salt and a base may be disposed of by separating... | 03/20/1984 |
| 4317684 | Process of converting polluting particles, emitted in chemical or physical processes, into harmless substances Harmful metals containing particles being emitted in chemical or physical processes, such as in iron production or in combustion processes, are caught and intimately divided in a molten metallurgic slag in order to avoid pollution problems.... | 03/02/1982 |
| 4144311 | Purifying salts containing organic pollutants A process for purifying organically polluted salts comprising forming a melt of said salts at a temperature of from about 600°to 1000° C., and contacting salt melt with an oxygen-containing gas. Acidic or basic fluxes may be present. The heat to maintai... | 03/13/1979 |
| 4079003 | Method of transforming sludge into ecologically acceptable solid material Sludges in the form of aqueous suspensions of organic and inorganic materials that range in viscosity from thick viscous pastes to flowable liquids are produced in the operation of numerous industries and also as waste by municipalities. The apparatus and... | 03/14/1978 |
| 3984312 | Process for insolubilizing potentially water pollutable wastes from sodium or ammonium type sulfur dioxide air pollution control systems Process for insolubilizing water soluble wastes from alkaline sodium or ammonium type sulfur dioxide control systems used in conjunction with industrial or power plants. The sodium or ammonium sulfite or sulfate wastes are reacted in solution with ferric ... | 10/05/1976 |
| 3962080 | Sodium sulfur oxides wastes disposal process Method for disposal of water soluble sodium sulfur oxide-containing wastes resulting from industrial processes producing fly and/or bottom ash from fossil fuel utilization and waste or excess sodium sulfur oxide compounds, particularly disposal of sodium ... | 06/08/1976 |
