| Patents for A62D 3 - Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances (9,310) |
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| 04/11/1991 | WO1991005834A1 Waste disposal process |
| 04/11/1991 | WO1991005586A1 Treatment of hazardous waste material |
| 04/11/1991 | CA2067147A1 Waste disposal process |
| 04/11/1991 | CA2042599A1 Treatment of hazardous waste material |
| 04/10/1991 | EP0421166A2 A process for operating in safety conditions in the maintenance and reclamation of containers of flammable substances |
| 04/10/1991 | EP0420975A1 Degradation of polychlorinated biphenyls |
| 04/10/1991 | EP0420957A1 Thermal treatment process for organically contaminated material |
| 04/04/1991 | WO1991004306A1 Minimization of environmental wastes |
| 04/04/1991 | WO1991004105A1 Method of providing barrier between substrate and atmosphere |
| 04/02/1991 | US5004551 Catalytic oxidation of hazardous wastes |
| 03/28/1991 | DE3931017A1 Contaminated soil cleaning - by atomic hydrogen passing through suspension in electrolytic cell |
| 03/27/1991 | EP0418613A2 Process for the removal during asbestos decontamination of buildings made out of these detached, asbestos fibre containing products, such as sprayed asbestos etc., and removal apparatus for performing said process |
| 03/27/1991 | CN1012142B Process for destroying chlorinated products at low temp. |
| 03/21/1991 | WO1991003281A1 Method and apparatus for the controlled reduction of organic material |
| 03/20/1991 | EP0417714A2 Method for removal of dioxin generated in waste combustion |
| 03/16/1991 | WO1991004104A1 Converting organic/organometallic gaseous or vaporizable compounds to inert solids |
| 03/16/1991 | CA2040436A1 Converting organic/organometallic gaseous or vaporizable compounds to inert solids |
| 03/14/1991 | DE4026320A1 Verfahren zur reinigung und aufbereitung von verunreinigtem gut Process for cleaning and treatment of contaminated well |
| 03/13/1991 | EP0415963A1 Use of metal chelate complexes in dehalogenation |
| 03/12/1991 | CA2024994A1 Method for removal of dioxin generated in waste combustion |
| 03/07/1991 | WO1991002727A1 Process for destroying cyanuric fluoride in residues produced in its manufacture |
| 03/07/1991 | WO1991002565A1 Process for purifying and processing contaminated materials |
| 03/07/1991 | DE4021309A1 Process thermally breaking down chemical and treating toxic residues - has number of indirectly heated fluidised bed incinerators used in series to provide efficient disposal of harmful chemicals |
| 03/06/1991 | EP0326561B1 Process for immobilizing harmful substances in the ground or in ground-like materials |
| 02/28/1991 | DE3938464A1 Cleaning contaminated solid materials - by mixing with washing fluid contg. chemical agent which dissolves contaminants and then adding biological agent |
| 02/28/1991 | DE3927951A1 Verfahren zur vernichtung von cyanurfluorid in den bei dessen herstellung anfallenden rueckstaenden Process for the destruction of cyanuric fluoride in during its production incurred RESIDUES |
| 02/27/1991 | EP0414303A1 Method for rendering toxic and harmful dust residues produced by thermal destruction processes inert |
| 02/26/1991 | CA1280583C Compositions and method for neutralization and solidification of hazardous alkali spills |
| 02/21/1991 | WO1991001949A1 A method of degradation of excrement |
| 02/20/1991 | CN1049295A Process for catalytic decomposition of chlorofluoro-alkanes |
| 02/14/1991 | DE3926252A1 Verfahren und vorrichtung zur zersetzung verbrauchter ionentauscherharze Method and device for decomposition of spent ion exchange resins |
| 02/13/1991 | EP0412456A2 A process for the catalytic decomposition of chlorofluoro-alkanes |
| 02/10/1991 | WO1991002362A1 Process and device for disintegrating spent ion exchange resins |
| 02/10/1991 | CA2066741A1 Process and device for disintegrating spent ion exchange resins |
| 02/06/1991 | CA2022212A1 Process for the catalytic decomposition of chlorofluoro-alkanes |
| 02/05/1991 | US4990404 Process for destruction of toxic organic chemicals and the resultant inert polymer by-product |
| 01/30/1991 | EP0410946A1 Decomposition of detrimental substances |
| 01/24/1991 | DE3923795A1 Waste incineration fly:ash treatment - e.g. for recycling to incinerator for reducing halohydrocarbon content |
| 01/22/1991 | CA1279331C Reductive dehalogenation of halogen compounds |
| 01/15/1991 | US4985220 Spraying with calcium bromide or chloride solution and foamin surfactant |
| 01/10/1991 | DE3921336A1 Biological decontamination of soil - using plants, esp. polygonum sachalinense |
| 01/01/1991 | US4982039 Noncatalytic reduction, pyrolysis |
| 01/01/1991 | US4981650 Method for treatment of dioxin-contaminated media |
| 12/30/1990 | WO1991000123A1 Mineralogical conversion of asbestos waste |
| 12/27/1990 | WO1990015642A1 Improved method and products for treating asbestos |
| 12/25/1990 | US4980039 Microwave-mediated degradation of PCB wastes |
| 12/18/1990 | US4977840 Minimization of environmental wastes |
| 12/18/1990 | CA1277827C Removal of polyhalogenated biphenyls from organic liquids |
| 12/12/1990 | EP0401924A2 New Process for disposing of the residues deriving from the processes of synthesis of chlorinated hydrocarbons |
| 12/12/1990 | EP0401810A1 Process for the chemical-thermal destruction of halogenated hydrocarbons |
| 12/04/1990 | US4975198 Process for the removal of organic contaminants from soils and sediment |
| 11/28/1990 | EP0398889A1 Degradation of organochlorines |
| 11/28/1990 | EP0324754B1 Process for dehalogenation of hydrocarbons |
| 11/27/1990 | US4973783 Alkali metal and hydrosiloxane, polychlorinated biphenyls |
| 11/27/1990 | US4973464 Roasting in air or nitrogen atmosphere, volatilization, pyrolysis |
| 11/22/1990 | EP0398538A1 Method of making hydrophilic-lipophilic copolymeric powders |
| 11/22/1990 | EP0398537A1 Decontamination of toxic chemical agents |
| 11/22/1990 | EP0247149B1 Apparatus for disposal of toxic wastes by combustion |
| 11/22/1990 | DE3915930A1 Removing harmful substances from fluid - by passing fluid through polymer, lipoid or oil dispersed in medium, and removing with microorganisms |
| 11/15/1990 | WO1990013488A1 In-situ polymeric membrane for cavity sealing and mitigating transport of liquid hazardous materials |
| 11/15/1990 | CA2016383A1 Decontamination of toxic chemical agents |
| 11/14/1990 | EP0397310A1 Method for the destruction of halogenated organic compounds in a contaminated medium |
| 11/11/1990 | WO1990013336A1 Corrin mediated degradation of organic nitrogen compounds |
| 11/11/1990 | CA2051410A1 Corrin mediated degradation of organic nitrogen compounds |
| 11/08/1990 | DE3914553A1 Thermal and mechanical treatment of asbestos materials - to avoid health risks |
| 11/06/1990 | US4968393 Membrane divided aqueous-nonaqueous system for electrochemical cells |
| 11/01/1990 | WO1990012853A1 Degradation of polychlorinated biphenyls |
| 10/31/1990 | CN1046437A Stable biodegradable foam |
| 10/30/1990 | US4966759 Fluid purification |
| 10/24/1990 | EP0325596A4 Hazardous waste reactor system |
| 10/23/1990 | US4964914 Shredding, mixing with flammable fuel, dissolving, homogenizing |
| 10/17/1990 | EP0392727A1 Process for the destruction of organic waste material |
| 10/17/1990 | EP0392589A1 Process for the treatment of heavy chlorination residues |
| 10/11/1990 | DE3910550A1 Process and apparatus for increasing the efficacy in biological purification processes |
| 10/10/1990 | EP0391158A2 Stable biodegradable foam |
| 10/10/1990 | EP0390985A1 Treating a temperature-sensitive hydrocarbonaceaous stream |
| 10/09/1990 | US4961391 Thermal treatment process for organically contaminated material |
| 10/04/1990 | WO1990011475A1 Thermal treatment process for organically contaminated material |
| 10/04/1990 | WO1990011144A1 Elimination of and beneficial use of harmful wastes |
| 10/03/1990 | EP0303882B1 Process for removing hydrogen sulphide with transition metal 2-ethyl-hexanoate |
| 09/27/1990 | DE3908913C1 Process for the disposal of asbestos-containing dusts |
| 09/26/1990 | EP0378578A4 Improved autoclave for hazardous waste |
| 09/20/1990 | DE3909060A1 Process for the making inert (inerting) of combustion residues and also natural and industrial sediments |
| 09/18/1990 | US4957606 Separation of dissolved and undissolved substances from liquids using high energy discharge initiated shock waves |
| 09/11/1990 | US4956064 Dehalogenation of halogenated organic compounds |
| 09/07/1990 | WO1990009959A1 Method for the removal of cyanides from spent potlinings from aluminum manufacture |
| 08/28/1990 | US4952746 Desulfurizaiton, dehalogenation, denitrification, demetallizaiton, deoxygenation |
| 08/28/1990 | US4952242 Composition for solidification or semi-solidification of waste materials |
| 08/23/1990 | DE3905025A1 Process for producing high-grade bauxite sinter having grain fractions up to 6 mm and above with simultaneous utilisation of the thermal energy of waste oils, even waste oils which can only be destroyed without hazard by high temperatures - up to 2000@C; wherein if only hazard-free destruction of such waste oil is to be operated, the bauxites are able to be replaced by material having high melting points, for example tungsten, as substitutes |
| 08/22/1990 | EP0382785A1 Soil decontamination method |
| 08/21/1990 | US4950833 Reacting polychlorobiphenyl with ammonium salt and alkali metals |
| 08/21/1990 | US4950425 Alkali chromate catalyst; hydrogen peroxide oxidant |
| 08/21/1990 | US4950409 Treatment with lime and carbon dioxide and bicarbonate to form nonleachable forms |
| 08/21/1990 | US4950309 Non catalytic destruction, detoxification of wastes; pollution control |
| 08/21/1990 | US4949641 Method of safely detoxifying mustard gases |
| 08/16/1990 | EP0382116A2 Process for removing pesticides from ginseng root |
| 08/16/1990 | DE3904169A1 Process for reducing the content of carcinogenic nitrosamines in tobacco |
| 08/15/1990 | CN1044597A Process for removal of pesticides from ginseng roots |
| 08/14/1990 | US4948818 Method of making porous hydrophilic-lipophilic copolymeric powders |
| 08/09/1990 | DE4002997A1 Removal of pesticide from ginseng roots - by extracting moistened ginseng roots with compressed carbon di:oxide |