PATENTS

      156.     ------.  [BECK, C., AND KREMP, F.]  (I. G.  Farbenindustrie A. G.).  Oxidation Products of Parrafin Hydrocarbons.  United States Patent 2,159,650.  May 16, 1939.  Chem. Abs., vol. 33, 1939, p. 6873.

See British Patent 482,954 (abs. 155) and German Patent 716,506 (asb. 1368).