Drug – bio-affecting and body treating compositions – Topical body preparation containing solid synthetic organic... – Ophthalmic preparation
Reexamination Certificate
2005-02-01
2005-02-01
Kunz, Gary (Department: 1616)
Drug, bio-affecting and body treating compositions
Topical body preparation containing solid synthetic organic...
Ophthalmic preparation
C424S427000, C514S912000, C514S839000, C514S840000, C514S812000, C514S254080
Reexamination Certificate
active
06849253
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 borate-polyol 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.
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Chowhan Masood
Dassanayake Nissanke L.
Alcon Manufacturing Ltd.
Brown Gregg C.
Haghighatian Mina
Kunz Gary
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