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| Number | Title | Issue Date |
| 4302209 | Lignite pellets and methods of agglomerating or pelletizing The specification discloses lignite pellets which are relatively hard, dust resistant, of generally uniform size and free from spontaneous ignition and general degradation. Also disclosed are methods for making such pellets which involve crushing as mined... | 11/24/1981 |
| 4018654 | Pretreatment of coal during transport Many available coals are "caking coals" which possess the undesirable characteristic of fusing into a solid mass when heated through their plastic temperature range (about 400° C.) which temperature range is involved in many common treatment processes su... | 04/19/1977 |
| 3941586 | Method and apparatus for regenerating cold traps within liquid-metal systems Oxide and hydride impurities of a liquid metal such as sodium are removed from a cold trap by heating to a temperature at which the metal hydroxide is stable in a molten state. The partial pressure of hydrogen within the system is measured to determine if... | 03/02/1976 |
