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| Number | Title | Issue Date |
| 5460642 | Aerosol reduction process for metal halides A method and apparatus for continuously producing metals such as zirconium, hafnium, titanium, niobium, vanadium, silicon and tantalum. The corresponding metal halide is reacted with a metallic reducing agent such as aluminum, calcium, magnesium and sodiu... | 10/24/1995 |
| 4531907 | Fluidized bed combustor A fluidized bed combustor is adapted to deprive a combustion gas issuing therefrom of dust by bringing the combustion gas into contact with a filter medium which is a fluidizing solid discharged in conjunction with slagging ash out of the combustor.... | 07/30/1985 |
