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:
Sep. 11, 2001
Filed:
Jul. 23, 1999
Applicant:
Inventors:
Assignee:
INALCO S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/1715 ; C08B 3/700 ; C07H 1/00 ;
U.S. Cl.
CPC ...
A61K 3/1715 ; C08B 3/700 ; C07H 1/00 ;
Abstract
Process for the preparation of O-sulfated K4, K5 and K40 polysaccharides useful for the treatment of tumoral, HIV-1 and coagulation pathologies and in cosmetic preparations, wherein the K4, K5 or K40 polysaccharide in the form of sodium salt is suspended in an aprotic solvent and directly submitted to the reaction of O-sulfation with a pyridine-sulphur trioxide or trimetylamine-sulphur trioxide adduct or with chlorosulfonic acid.