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:
May. 29, 2001
Filed:
Dec. 30, 1999
Applicant:
Inventors:
Marco Villa, Milan, IT;
Vincenzo Cannata, Sasso Marconi, IT;
Alessandro Rosi, Borgo San Lorenzo, IT;
Pietro Allegrini, Lonigo, IT;
Assignee:
Zambon Group S.p.A., Vicenza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 1/500 ; C02F 1/42 ; B01D 2/101 ;
U.S. Cl.
CPC ...
C07F 1/500 ; C02F 1/42 ; B01D 2/101 ;
Abstract
A method for the removal of heavy metals from solutions of organic compounds by treatment with cysteine or with an N-acylcysteine is described. Organic compounds with a content of heavy metal, for example palladium, particularly low and suitable for the preparation of compounds with pharmacologic activity can be isolated from the resultant solutions.