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|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)|
Patent Claim Types:|
see list of patent claims
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Austria||160503||<disabled in preview>|
|Australia||4440193||<disabled in preview>|
|Australia||666957||<disabled in preview>|
| This preview shows a limited data set|
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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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