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. 16, 2014
Filed:
Mar. 22, 2004
Applicants:
Jérôme Berger, Bière, CH;
Robert Gurny, Genéve, CH;
Marianne Reist Oechslin, Ecublens, CH;
Inventors:
Assignee:
Laboratoire Medidom S.A., Geneva, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 47/00 (2006.01); C08J 3/075 (2006.01); A61K 47/36 (2006.01); A61K 9/06 (2006.01);
U.S. Cl.
CPC ...
C08J 3/075 (2013.01); A61K 47/36 (2013.01); A61K 9/06 (2013.01); C08J 2305/08 (2013.01);
Abstract
The composition disclosed is a pseudo-thermosetting neutralized chitosan composition, neutralized with an hydroxylated base, forming a phosphate-free transparent hydrogel at a temperature higher than 5° C. Said composition contains a homogeneously reacetylated chitosan derived from a chitosan having a deacetylation degree of 80-90%, having a molecular weight of not smaller than 200 kDa and a deacetylation degree of 30-60%, and may further contain a diol. Said composition may be used as a drug delivery system.