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| Number | Title | Issue Date |
| 7198658 | Method for producing feed material for molten metal production and method for producing molten metal The prevent invention provides a method for producing a feed material for molten metal production and a method for producing a molten metal capable of sufficiently carbonizing biomass and effectively using carbonized biomass as a reducing agent. In the method for pr... | 04/03/2007 |
| 4253987 | Homologation process for the production of ethanol from methanol A process for producing ethanol from the reaction of methanol, hydrogen and carbon monoxide catalyzed by a phosphine-iodine promoted cobalt-ruthenium catalyst, the improvement of maintaining the phosphine to halide ratio and concentration within a critica... | 03/03/1981 |
| 4242225 | Method and apparatus for producing active coke At least a portion of coke produced in a hearth-type furnace is fed into an activation reactor, and at least a portion of the waste gas from the hearth-type furnace is fed to the activation reactor to act as a heating gas and/or an activation gas for the ... | 12/30/1980 |
| 4122036 | Method of pyrolyzing sewage sludge to produce activated carbon A method of pyrolyzing sewage sludge to transform the same into activated carbon, with the combustible pyrogas and volatile liquids included therewith that arise from the pyrolysis operation being burned to sustain the transformation operation. A first po... | 10/24/1978 |
| 4038154 | Pile furnace A furnace and process for carrying out the carbonizing and/or activating of charcoal and similar operations includes vent means, which may be in the general shape of one or more elongated chambers of tunnels, that acts in combination with air admission me... | 07/26/1977 |
| 3950267 | Process for producing activated carbon High quality activated carbon is produced by charging a mixture of an organic material such as wood, anthracite coal, brown coal, coconut husk, and a material containing metal oxide, metal carbonate or metal hydroxide, such as iron ore and lime, into an i... | 04/13/1976 |
