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Details for Patent: 5,164,190

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Summary for Patent: 5,164,190

Title: Subsaturated transdermal drug delivery device exhibiting enhanced drug flux
Abstract:Transdermal administration of hydrophobic drugs via a diffusion mechanism in which the drug is dissolved in a carrier at concentrations that are 20% to 80% of the saturation concentration. The flux of drug from the device is non-Fickian and is substantially greater than the flux observed when the drug is at saturation.
Inventor(s): Patel; Dinesh C. (Murray, UT), Ebert; Charles D. (Salt Lake City, UT)
Assignee: Theratech, Inc. (Salt Lake City, UT)
Application Number:07/626,685
Patent Claim Types:
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Compound; Device; Composition; Delivery; Use;

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International Patent Family for Patent: 5,164,190

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria225166► Subscribe
Australia651165► Subscribe
Australia9175791► Subscribe
Canada2098195► Subscribe
Germany69133123► Subscribe
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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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