1917. KOPPERS CO., INC. Synthesis Gas. British Patent (Provisional) 18,496, filed 1936.

Synthesis gas is made by a Koppers process, which uses brown-coal briquets.

------. See abs. 508, 510, 511, 1810, 1900, 1918, 1919, 1920, 1922, 2059, 2104, 2203, 2204, 2714, 2734, 2735, 2736, 3624.