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:
Aug. 20, 2013
Filed:
Oct. 12, 2010
Johann Wiesmueller, Garching, DE;
Franz Michlbauer, Kirchweidach, DE;
Ralf Kahleyss, St. Georgen, DE;
Helmut Hausner, Trostberg, DE;
Johann Wiesmueller, Garching, DE;
Franz Michlbauer, Kirchweidach, DE;
Ralf Kahleyss, St. Georgen, DE;
Helmut Hausner, Trostberg, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
A carnosic acid-rich plant extract can be produced by extracting a dried and comminuted plant material containing carnosic acid with supercritical COat a pressure of at least 200 bar and at a temperature of at most 100° C. In a first step, supercritical COin a quantity of 10 to 50 kg of COper kg of plant material is passed through the plant material to obtain a first COextract. In a second step, additional supercritical COis passed through the plant material to obtain a second COextract, and a carnosic acid-rich plant extract is separated from the second COextract by lowering the pressure.