Surface modification of lamellar particles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 21, 2003
Grant Date -
Jun 6, 2002
app pub date -
Sep 6, 2001
filing date -
Mar 6, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Lamellar particles are provided comprising a biodegradable and biocompatible polymer and carrying a cationic charge on their surface. These particles are prepared by mixing a preformed negatively charged lamellar particle with a positively charged material. Compositions using these particles may include genetic material or antigens, for example, and may be used as a drug delivery system, such as a sustained release system.
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