1760. JAHNIG, C. E. (Standard Oil Development Co.). Process and Apparatus for Contacting Finely Divided Solids and Gases. United States Patent 2,518,693, Aug. 15, 1950; appl. filed July 24, 1941, Serial No. 403,829; 7 claims (Cl. 196-52).

Major portion of the catalyst particles is removed from the bottom of the reaction zone so that less catalyst passes overhead with the vapors and gases, thus reducing the number of separation units needed. The process may be applied to the Fischer-Tropsch synthesis. 2 foreign and 31 United States patents cited.

------. See abs. 884.

JAHRSTORFER, M. See abs. 3308.