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:
Oct. 30, 2012
Filed:
Aug. 04, 2009
Applicants:
Andreas Kleefeldt, Rheinfelden, DE;
Christof Wehrli, Witterswil, CH;
Inventors:
Andreas Kleefeldt, Rheinfelden, DE;
Christof Wehrli, Witterswil, CH;
Assignee:
DSM IP Assets B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 407/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Catalytic processes for the production of carnosol from carnosic acid using hydrogen peroxide or a peracid are presented. The carnosic acid may be in pure form, in an impure form, part of a plant extract, or may be present in rosemary needles. The catalyst may be iron, iron salts, a minor amount of water, rosemary needles, or a mixture thereof.