308. ------. [CARBO-NORIT-UNION VERWALTUNGS-G. M. B. H.] [Synthesis Products.] German Patent 710,766, no date, Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgesell. Leipzig. 1950. p. 184.

Patent Abstracts

Extraction of the used adsorption C with solvent agents for the purpose of regeneration and then treatment with steam.