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Drug delivery system

  • US 4,904,479 A
  • Filed: 01/15/1987
  • Issued: 02/27/1990
  • Est. Priority Date: 01/17/1986
  • Status: Expired due to Term
First Claim
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1. A drug delivery system comprising an active drug as a suspension of colloidal particles, each particle being coated with a material which provides a hydrophilic coat having a thickness of from 100 Å

  • to 154 Å and

    a steric barrier to particle cell interaction.

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  • 4 Assignments
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