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:
Feb. 08, 2011
Filed:
Jul. 06, 1999
Davide Bellini, Montegrotto Terme, IT;
Alessandra Topai, Rome, IT;
Davide Bellini, Montegrotto Terme, IT;
Alessandra Topai, Rome, IT;
Fidia Farmaceutici S.p.A., Abano Terme, IT;
Abstract
An amide of hyaluronic acid or a derivative thereof which comprises at least one repetitive unit of general formula (I): wherein R═NRR, or alcoholic group of the aliphatic, aromatic, arylaliphatic, cycloaliphatic, heterocyclic series, OH, O—, alcoholic group of hyaluronic acid, amino group of deacylated hyaluronic acid; R, R, R, R═H, SO—, acyl group derived from a carboxylic acid of the aliphatic, aromatic, arylaliphatic, cycloaliphatic, heterocyclic series, —CO—(CH)—COOY; Y═ negative charge, or H; R═—CO—CH, H, SO—, acyl group derived from a carboxylic acid of the aliphatic, aromatic, arylaliphatic, cycloaliphatic, heterocyclic series, acylic group of hyaluronic acid; R═ is H or a aliphatic, aromatic, arylaliphatic, cycloaliphatic, or heterocyclic group, substituted or unsubstituted; R═ is H or an aliphatic, aromatic, arylaliphatic, cycloaliphatic, or heterocyclic group, substituted or unsubstituted; wherein at least one of R or Rforms an amide group.