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Serving leading biopharmaceutical companies globally:

Queensland Health
Argus Health
Chinese Patent Office
Fish and Richardson
Harvard Business School

Generated: December 10, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,834,010

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Summary for Patent: 5,834,010

Title: Triacetin as a penetration enhancer for transdermal delivery of a basic drug
Abstract:A composition and method for enhancing transdermal penetration of a basic drug are described. The composition comprises a matrix patch comprising an effective amount of a basic drug, preferably having a pK.sub.a of about 8.0 or greater, an effective amount of a penetration enhancer consisting essentially of triacetin, and a polymer layer preferably comprising a pressure-sensitive adhesive. A preferred basic drug is oxybutynin and acid addition salts thereof. The method for enhancing transdermal penetration comprises applying the matrix patch to a selected area of skin.
Inventor(s): Quan; Danyi (Salt Lake City, UT), Deshpanday; Ninad A. (Salt Lake City, UT), Venkateshwaran; Srinivasan (Salt Lake City, UT), Ebert; Charles D. (Salt Lake City, UT)
Assignee: Theratech, Inc. (Salt Lake City, UT)
Application Number:08/775,367
Patent Claim Types:
see list of patent claims
Use; Composition;

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International Patent Family for Patent: 5,834,010

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina001721► Subscribe
Austria205694► Subscribe
Australia5446796► Subscribe
Australia696777► Subscribe
Canada2217888► Subscribe
China100374161► Subscribe
China1143688► Subscribe
China1182358► Subscribe
China1507918► Subscribe
China1714867► 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:

US Army
Johnson and Johnson
Queensland Health

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