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. 15, 2001
Filed:
Oct. 26, 1999
Applicant:
Inventors:
Lanfranco Callegaro, Thiene, IT;
Davide Renier, Padua, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/170 ; C07H 5/04 ;
U.S. Cl.
CPC ...
A61K 3/170 ; C07H 5/04 ;
Abstract
A process for preparing a hyaluronic acid fraction having an average molecular weight comprised between 5000 and 300,000 and a polydispersion index lower than 1.7, comprising treating the starting high molecular weight hyaluronic acid, contemporaneously with sodium hypochlorite and ultrasounds.