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Details for Patent: 4,963,555

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Summary for Patent: 4,963,555

Title: Formulations of heterocyclic compounds
Abstract:A topical pharmaceutical formulation for use in treating virus infections of the skin or mucosa and containing 9-(2-hydroxyethoxymethyl) guanine or a salt or ester thereof which comprises a dispersed oil phase and a continuous aqueous phase containing therein water, at least 30% of a polyhydric alcohol (by weight of the formulation) and solublized acyclovir.
Inventor(s): Jones; Trevor M. (Sanderstead, GB2), White; Alan R. (Meopham, GB2)
Assignee: Burroughs Wellcome Co. (Research Triangle Park, NC)
Application Number:07/317,129
Patent Claim Types:
see list of patent claims
Formulation; Compound; Use;

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Foreign Priority and PCT Information for Patent: 4,963,555

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8023645Jul 18, 1980

International Patent Family for Patent: 4,963,555

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Ireland51120► subscribe
Ireland811617► subscribe
Hong Kong95485► 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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