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Serving leading biopharmaceutical companies globally:

Fish and Richardson
Queensland Health

Generated: December 15, 2017

DrugPatentWatch Database Preview

Details for Patent: 6,503,497

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Summary for Patent: 6,503,497

Title: Use of borate-polyol complexes in ophthalmic compositions
Abstract:Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the boratepolyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
Inventor(s): Chowhan; Masood (Arlington, TX), Dassanayake; Nissanke L. (Arlington, TX)
Assignee: Alcon Manufacturing, Ltd. (Fort Worth, TX)
Application Number:10/027,998
Patent Claim Types:
see list of patent claims
Composition; Formulation;

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International Patent Family for Patent: 6,503,497

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria300936► Subscribe
Australia4233693► Subscribe
Australia674852► Subscribe
Canada2132826► Subscribe
Germany69333850► Subscribe
Denmark0639070► Subscribe
European Patent Office0639070► Subscribe
Spain2246491► Subscribe
Hong Kong1011615► Subscribe
Japan2002177369► 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:

US Army
Boehringer Ingelheim
Cantor Fitzgerald
Harvard Business School

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