Arthur F Gulbrandsen, Uriel M Oko: Apparatus for converting coal. Cities Service Company, George L Rushton, October 25, 1983: US04411871 (2 worldwide citation)

An apparatus, for the rapid heating and subsequent reaction of carbonaceous material and hydrogen, comprising a cylindrical reactor shell; a first inlet conduit, coaxial with the shell, terminating inside the shell and having the terminal discharge end covered with a metal that resists carbide forma ...