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Details for Patent: 5,540,918

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Summary for Patent: 5,540,918

Title: Use of certain anionic surfactants to enhance antimicrobial effectiveness of ophthalmic compositions
Abstract:Certain anionic surfactants are used to enhance antimicrobial effectiveness in comfortable, sustained release ophthalmic compositions containing polyelectrolytes, such as carboxyvinyl polymers, polystyrene sulfonic acid polymers and cationic exchange resins, as well as at least one active ingredient.
Inventor(s): Castillo; Ernesto J. (Arlington, TX), Ali; Yusuf (Fort Worth, TX)
Assignee: Alcon Laboratories, Inc. (Ft. Worth, TX)
Application Number:08/472,446
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent PDF download available with subscription

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International Patent Family for Patent: 5,540,918

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria160503<disabled in preview>
Australia4440193<disabled in preview>
Australia666957<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
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