1680. ------. [INTERNATIONAL HYDROCARBON SYNTHESIS CO.] Hydrocarbons From Carbon Monoxide and Hydrogen. British Patent 536,843, May 29, 1941; appl. filed Dec. 21, 1939. Chem. Abs., vol. 36, 1942, p. 1759.

Throughput of the initial gas per m.³ of catalyst is maintained substantially the same in each of the stages and is such that further increase in the throughput does not give a substantial increase in the amount of the hydrocarbons produced per vol. of catalyst per hr.