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:
Aug. 07, 2007
Filed:
Jun. 18, 2004
Applicants:
Xianqi Kong, Dollard-des-Ormeaux, CA;
David Migneault, Laval, CA;
Xinfu Wu, Laval, CA;
Inventors:
Assignee:
Neurochem (International) Limited, Lausanne, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 309/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to methods of preparation of sulfonate derivatized compounds, e.g., 3-amino-1-propanesulfonic acid and 1,3-propanedisulfonic acid disodium salt with increased purity, with reduced potential for toxic by-products, and that are pharmaceutically useful, e.g., for the treatment of amyloidosis.