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:
Jan. 18, 2005
Filed:
Jan. 24, 2002
Applicants:
Georg Frater, Winterthur, CH;
Ulrich Huber, Erlenbach, CH;
Inventors:
Georg Frater, Winterthur, CH;
Ulrich Huber, Erlenbach, CH;
Assignee:
Roche Vitamins Inc., Parsippany, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 4500 ; C07C 49163 ;
U.S. Cl.
CPC ...
Abstract
A process for the purification of 1,3-diketones comprising reacting a 1,3-diketone with an earth metal or alkaline earth metal complexing agent in an organic solvent, isolating, washing and decomposing the resulting complex, and isolating the purified 1,3-diketone.