PATENTS

      1580.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Synthesis Catalysts.]  German Patent 756,609. Dec. 21, 1938; appl. I 63,254 (Cl. 12 o-1.03).

            In the conversion of CO to hydrocarbons with more than 1 C atom in the molecule, a catalyst is used that is made by oxidizing Fe pieces or foil with oxidizing gases and then reducing.