Drug delivery systems based on hyaluronans derivatives thereof and their salts and methods of producing same
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United States of America Patent
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Jul 7, 1992
Issued Date -
N/A
app pub date -
Jul 23, 1990
filing date -
Dec 6, 1984
priority date (Note) -
Expired
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Abstract
Disclosed are drug delivery systems based on a polymeric component which is soluble or insoluble (cross-linked) hyaluronan or hyaluronan copolymerized with another hydrophilic polymer or hylan and one or more substances having biological or pharmacological activity and methods of preparing same.
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