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Serving leading biopharmaceutical companies globally:

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Generated: November 18, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,855,294

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Summary for Patent: 4,855,294

Title: Method for reducing skin irritation associated with drug/penetration enhancer compositions
Abstract:A composition and method for reducing the skin irritation properties of a transdermal drug/enhancer composition which comprises incorporating into said composition, either prior to or at the time of application the skin, an effective amount of glycerin. When incorporated into the drug/enhancer composition prior to application to the skin the glycerin content will be between about 0.1 and 70 wt. %, preferably between about 1.0 and 50 wt. % and most preferably between about 5.0 and 20 wt. % of the composition.
Inventor(s): Patel; Dinesh C. (Murray, UT), Ebert; Charles D. (Salt Lake City, UT)
Assignee: TheraTech, Inc. (Salt Lake City, UT)
Application Number:07/240,688
Patent Claim Types:
see list of patent claims
Composition; Compound; Use;

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International Patent Family for Patent: 4,855,294

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria96678► Subscribe
Canada1332570► Subscribe
Germany68910520► Subscribe
European Patent Office0416137► Subscribe
Spain2053882► Subscribe
Japan2953625► Subscribe
JapanH02115131► Subscribe
South Korea0143916► 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:

Cantor Fitzgerald
Express Scripts
Chinese Patent Office
Argus Health

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