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. 05, 1999
Filed:
Jun. 10, 1998
Applicant:
Inventors:
Giorgio Ripa, Milan, IT;
Alessandro Scala, Milan, IT;
Marcella Murru, Milan, IT;
Emanuela Panetta, Milan, IT;
Carlo Felice Viscardi, Milan, IT;
Marina Ausonio, Milan, IT;
Assignee:
Dibra S.p.A., , IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540474 ; 540470 ;
Abstract
A process for the preparation of 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid and the salts thereof of formula (I) ##STR1## which comprises the following steps: a) carboxymethylation reaction of a suitable precursor in water, with a haloacetic acid,