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Return to Abstracts of Patents Return to Abstracts of Patents 500-749 Patent Abstracts618. ------. [ELWORTHY, H. S., AND WILLIAMSON, E. H.] Increasing Methane in Gas Mixtures. British Patent 183,412, May 14, 1905. Chem. Abs., vol. 2, 1908, p. 345. CH4 content in gas mixtures containing H2 and CO or CO2 is increased by passing the gas mixture over metallic Ni. H2 is added in excess. |