Vogt & O'Donnell
Caffeine adsorption
 In the decaffeination of green coffee beans with an aqueous medium, caffeine is removed from the aqueous medium which also contain non-caffeine green coffee solids, contact with substantially neutral active carbon. Thereafter the medium may be recycled to extract further amounts of caffeine from the same or another batch of green coffee beans. Other features of the invention are described in the specification. 
Societe d'Assistance Technique pour Produits Nestle S.A.
A C A
A23F C07D A23F
inventional inventional inventional
Maurice David
Blanc Green