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1960-12-27 |
Universal Oil Prod Co |
Sweetening sour hydrocarbon distillate with metal phthalocyanine catalyst in the presence of alkali air and sulfite ions
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1961-09-12 |
Universal Oil Prod Co |
Treatment of hydrocarbon distillates
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1961-06-13 |
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Treatment of hydrocarbon distillates
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Treating waste water
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