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Chitin hydrogels, methods of their production and use

  • US 6,124,273 A
  • Filed: 10/13/1997
  • Issued: 09/26/2000
  • Est. Priority Date: 06/09/1995
  • Status: Expired due to Term
First Claim
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1. A composition of matter that provides sustained release of proteins, said composition comprising a covalently cross-linked N,O-carboxymethyl chitosan hydrogel having a protein to be delivered incorporated therein in sufficient concentration to provide said sustained release.

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