Cetylpyridinium chloride as an antimicrobial agent in...

Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Nonionic surfactant containing

Reexamination Certificate

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C510S112000

Reexamination Certificate

active

07578996

ABSTRACT:
A multi-purpose contact lens care solution having high antimicrobial activity comprising, in an aqueous liquid medium, cetylpyridinium chloride and a non-ionic surfactant. In one embodiment of the invention, the non-ionic surfactant is a poly(oxypropylene)-poly(oxyethylene) block copolymer. The solution may optionally also include additional antimicrobial components, a buffer component, a viscosity inducing component, a surfactant, taurine, propylene glycol and/or a tonicity component. This solution additionally prevents losses in ocular tissue membrane integrity during contact lens wear.

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Database WPI, Section Ch, Week 200301, Derwent Publications Ltd., London, GB. Jun. 1, 2002. Abstract.

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