Patent · US Expired

Process for recovery of caffeine from activated carbon

US5371221A · kind A · utility

9Cited by

1References

9Claims

0Family size

Assignee

Jacobs Suchard AG · CH

Inventors

Stefan Sipos · Bremen, DE
Gary V. Jones · Ramsey, US

Key dates

Filing date	Jul 15, 1993
Grant date	Dec 6, 1994
Priority date	—
Expiry date	Jul 15, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D473/12
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for recovering caffeine from caffeine-loaded activated carbon using a circulated inert gas sweeping stream held at a temperature of 250.degree. to 460.degree. C., in which process the activated carbon is preheated prior to the desorption of the caffeine with heat sources other than the sweeping gas and held during the desorption step at a uniform temperature or at a temperature increasing from the inlet to the outlet of the inert gas sweeping stream within the range of 250.degree. to 460.degree. C. and the caffeine is subsequently separated from the inert gas sweeping stream by conventional means.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.