Nanoparticles based on a polyoxyethelene and polyactic acid block copolymer
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United States of America Patent
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Nov 4, 1997
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N/A
app pub date -
Jun 6, 1995
filing date -
Jun 28, 1991
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Expired
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Abstract
The invention discloses nanoparticles offering an extended time before capture by the reticulo-endothelial system. Said particles are composed of an ethylene and/or propylene polyoxide polylactic copolymer optionally mixed with a polylactic polymer.
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