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:
Jul. 14, 2009
Filed:
May. 12, 2006
Applicants:
Maurizio Zenoni, Paullo, IT;
Antonio Manca, Milan, IT;
Riccardo Monguzzi, Dorio, IT;
Inventors:
Assignee:
ACS Dobfar S.p.A., Tribiano, IT;
Primary Examiner:
Int. Cl.
CPC ...
C07D 501/57 (2006.01); C07D 501/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for obtaining cefotetan acid substantially free of tautomer, by treating crude cefotetan with Alions which cause the tautomer to precipitate. The precipitate is eliminated by filtration to provide a solution from which practically tautomer-free cefotetan is obtained.