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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.:

US 7109362 B1

PDFFull Text
Date of Patent:
Sep. 19, 2006

Filed:

Nov. 29, 2001

Process for the preparation of lipoic acid and dihydrolipoic acid

Applicants:

Martin Jochen Klatt, Bad Dürkheim, DE;

Markus Niebel, Mannheim, DE;

Joachim Paust, Neuhofen, DE;

Inventors:

Martin Jochen Klatt, Bad Dürkheim, DE;

Markus Niebel, Mannheim, DE;

Joachim Paust, Neuhofen, DE;

Assignee:

BASF Aktiengesellschaft, Ludwigshafen, DE;

Attorney:

Novak, Druce & Quigg, LLP

Primary Examiner:

Rosalynd Keys

Int. Cl.
CPC ...
C07B 45/00 (2006.01); A61K 31/095 (2006.01); C07D 339/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention relates to a process for the preparation of R- and S-lipoic acid and R- and S-dihydrolipoic acid comprising (a) reaction of

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