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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;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 38th percentile
Forward Citations: 3rd percentile

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Premature patent expiration for: 6,503,497

Expiration due to failure to pay maintenance fee

Patent Number Expiration Date
6,503,497 January 07, 2015

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
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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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