The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 1990
Filed:
Mar. 20, 1989
Applicant:
Inventors:
Hubertus Klima, Tacherting, DE;
Erwin Schutz, Palling, DE;
Heinz-Rudiger Vollbrecht, Stein/Traun, DE;
Assignee:
SKW Trostberg Aktiengesellschaft, Trostberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A23F / ;
U.S. Cl.
CPC ...
426427 ; 426481 ;
Abstract
The present invention provides a process for the decaffeination of tea containing 15 to 50% by weight of water with moist carbon dioxide at 255 to 350 bar at 50.degree. to 80.degree. C. in a pressure vessel, subsequent separation of the caffeine from the carbon dioxide with the help of an adsorbent and recycling the caffeine-free carbon dioxide over the already extracted tea, wherein the adsorbent is distributed in the material to be extracted in an amount of from 5 to 40% by weight, referred to the dry weight of the tea.