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Serving leading biopharmaceutical companies globally:

Johnson and Johnson
Federal Trade Commission
US Department of Justice

Generated: November 21, 2017

DrugPatentWatch Database Preview

Details for Patent: 5,670,547

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Summary for Patent: 5,670,547

Title: Moisturizing vehicle for topical application of vitamin A acid
Abstract:A formulation containing tretinoin, a gelling agent, proteinaceous material, and water is provided for the uniform topical application of tretinoin. The water-based formulation is oil- and fat-free, alcohol-free, and rich in proteinaceous material. The formulation is stable over time and is comedogenic and less irritating and drying to the skin.
Inventor(s): Milstein; Elliott A. (West Bloomfield, MI), Milstein; Nathan (Hazel Park, MI)
Assignee: Dow Pharmaceutical Sciences (Petaluma, CA)
Application Number:08/430,154
Patent Claim Types:
see list of patent claims
Formulation; Delivery; Composition;

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International Patent Family for Patent: 5,670,547

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia5296890► Subscribe
Australia633892► Subscribe
Canada2014437► Subscribe
China1047802► Subscribe
Czechoslovakia9001911► Subscribe
German Democratic Republic298352► Subscribe
European Patent Office0393904► Subscribe
Hungary902444► Subscribe
HungaryT53518► Subscribe
Israel93928► 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:

Harvard Business School
Fish and Richardson
Boehringer Ingelheim
Express Scripts

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