Ester derivatives of hyaluronic acid for the preparation of hydrogel materials by… Grant US-8178663-B2 United States of America 15 May 2012
Ester derivatives of hyaluronic acid for the preparation of hydrogel materials by… Grant US-8178499-B2 United States of America 15 May 2012
Ester derivatives of hyaluronic acid for the preparation of hydrogel materials by… Grant US-7462606-B2 United States of America 09 Dec 2008