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| US4046869 | 11 Feb 1976 | 6 Sep 1977 | Texaco Inc. | Steam reforming process | | US4179361 | 13 Nov 1978 | 18 Dic 1979 | Chevron Research Company | Sorbent regeneration in a process for removing sulfur-containing impurities from mineral oils | | US7662295 | 1 Nov 2005 | 16 Feb 2010 | Hitachi, Ltd. | Method for removing organic material in oilfield produced water and a removal device therefor |
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