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Details for Patent: 5,110,493

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Summary for Patent: 5,110,493

Title: Ophthalmic NSAID formulations containing a quaternary ammonium preservative and a nonionic surfactant
Abstract:Stable, clear, antimicrobially effective, ophthalmic formulations include an ophthalmologically effective amount of a drug, especially a --COOH group-containing drug or a NSAID, and a preservative system formed of a quaternary ammonium preservative and a nonionic surfactant, all in an aqueous vehicle. These formulations are useful for treating diseases that are either caused by, associated with or accompanied by inflammatory processes, including, among others, glaucoma, cystoid macular edema, uveitis, diabetic retinopathy and conjunctivitis, or any trauma caused by eye surgery or eye injury.
Inventor(s): Cherng-Chyi; Roger F. (Los Altos, CA), Lidgate; Deborah M. (Los Altos, CA)
Assignee: Syntex (U.S.A.) Inc. (Palo Alto, CA)
Application Number:07/624,027
Patent Claim Types:
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Formulation; Use; Compound;

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International Patent Family for Patent: 5,110,493

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria74750► Subscribe
Australia2204288► Subscribe
Australia5220190► Subscribe
Australia626798► Subscribe
Australia631849► 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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