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Serving leading biopharmaceutical companies globally:

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Johnson and Johnson
Harvard Business School
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Generated: December 15, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,849,224

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Summary for Patent: 4,849,224

Title: Device for administering an active agent to the skin or mucosa
Abstract:A transdermal drug delivery device comprising a drug formulation-containing reservoir defined by a backing layer and a drug-permeable membrane layer, a ring-shaped layer made of an adhesive that is incompatible with one or more components of the drug formulation that is peripheral to the reservoir outwardly of the membrane layer and a peelable liner layer that underlies at least the membrane layer with a first heat seal between the backing and the membrane about the perimeter of the reservoir and another concentric heat seal between the backing and the release liner positioned outwardly of the first heat seal, the heat seals providing barriers that isolate the drug formulation from the adhesive.
Inventor(s): Chang; Yunik (Toms River, NJ), Patel; Dinesh C. (Murray, UT), Ebert; Charles D. (Salt Lake City, UT)
Assignee: TheraTech Inc. (Salt Lake City, UT)
Application Number:07/119,617
Patent Claim Types:
see list of patent claims
Device; Formulation;

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International Patent Family for Patent: 4,849,224

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria154751► Subscribe
Austria81023► Subscribe
Australia2467788► Subscribe
Australia5341690► Subscribe
Australia603531► Subscribe
Australia631417► Subscribe
Canada1302824► Subscribe
Canada2053272► Subscribe
Germany3875068► Subscribe
Germany69030974► 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:

Express Scripts
US Army

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