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Generated: November 21, 2017

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Details for Patent: 5,741,510

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Summary for Patent: 5,741,510

Title: Adhesive patch for applying analgesic medication to the skin
Abstract:A medication patch to be applied to the skin includes a self-supporting backing layer to give the patch the required integrity and strength by acting as a supporting framework for other components, and a flexible hydrophilic pressure-sensitive adhesive reservoir comprising a natural or synthetic polymer for the sustained release of medication to be absorbed topically through the skin into the body of a patient. The reservoir has two portions: first, an external coating layer with an exposed lower skin-contacting surface that forms a pressure-sensitive bond with the skin, and second, an upper internal portion which infiltrates the porous backing and becomes solidified therein after being applied so that the reservoir and the backing are unified, enabling the backing itself to act as a storage location for the medication-containing reservoir. The medication within the reservoir migrates over time from within the backing through the lower coating layer and passes through the skin to provide sustained release of the medication into the body of a patient.
Inventor(s): Rolf; David (Minneapolis, MN), Sjoblom Urmann; Elisabeth K. (Tomahawk, WI)
Assignee: Lectec Corporation (Minnetonka, MN)
Application Number:08/629,191
Patent Claim Types:
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International Patent Family for Patent: 5,741,510

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria269744► Subscribe
Australia1002495► Subscribe
Australia676623► Subscribe
Canada2133598► Subscribe
Germany69433859► Subscribe
Denmark0674913► Subscribe
European Patent Office0674913► Subscribe
Spain2224102► Subscribe
Finland950465► Subscribe
JapanH07265353► 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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Serving leading biopharmaceutical companies globally:

Fish and Richardson
Argus Health
Farmers Insurance
Boehringer Ingelheim
Harvard Business School

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