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Details for Patent: 5,814,335

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Summary for Patent: 5,814,335

Title: Sphingosomes for enhanced drug delivery
Abstract:Liposomal formulations having extended circulation time in vivo and increased drug retention are comprised of sphingomyelin and cholesterol and have an acidic intraliposomal pH. The formulations have enhanced stability and thus are used in methods which provide improved drug delivery and more effective treatment. The delivery of ciprofloxacin, and alkaloid drugs, particularly swainsonine, vincristine and vinblastine, is significantly improved.
Inventor(s): Webb; Murray S. (Vancouver, CA), Bally; Marcel B. (Bowen Island, CA), Mayer; Lawrence D. (N. Vancouver, CA), Miller; James J. (Vancouver, CA), Tardi; Paul G. (Richmond, CA)
Assignee: Inex Pharmaceuticals Corporation (CA)
Application Number:08/932,375
Patent Claim Types:
see list of patent claims
Compound; Dosage form; Process; Delivery; Formulation; Composition;
Patent Metrics:
Source: PatentQuant.com
Field: Not categorized
Back Citations: 3rd percentile
Forward Citations: 0th percentile
Patent PDF download available with subscription

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International Patent Family for Patent: 5,814,335

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria248586<disabled in preview>
Australia2709495<disabled in preview>
Canada2193502<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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