Site-specific adhesion within the GI tract using nanoparticles stabilized by high molecular weight, linear poly (ethylene oxide) polymers
Patent 5580579 Issued on December 3, 1996. Estimated Expiration Date: 
February 15, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 15, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSurface modified drug nanoparticles Patent #: 5145684 InventorsApplicationNo. 388878 filed on 02/15/1995US Classes:424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/498, Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof514/937, DISPERSION OR EMULSION514/938, Oil-water type514/939, Mineral oil-water type514/943Higher fatty acid or derivative containingExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 009/107A61K 123/00 AbstractNanoparticulate crystalline therapeutic or diagnostic substances formulated with stabilizers and high molecular weight, linear poly(ethylene oxide) polymers, enhance contact between the crystalline therapeutic or diagnostic substances and the gastrointestinal tract providing site-specific and extended therapeutic or diagnostic effect.Other References
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