3914.  WIETZEL, g. (I. B. Farbenindustrie A. G.). Combustible Gas Containing Hydrogen and Carbon Monoxide. United States Patent 1,751,117, Mar. 18, 1930. Chem. Abs., vol. 24, 1930. p. 2583.

In an exothermic process of manufacturing gas which has a high calorific value and which is rich in H₂ and Co. pulverulent solid fuel is gasified in a continuous process with the aid of a gas containing a higher % of free O2 than atmospheric air.

See abs. 1118, 1119, 2674, 2685, 2686, 2687, 2688, 3265, 3890.