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Details for Patent: 5,843,930

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Summary for Patent: 5,843,930

Title: Method of treating otitis with ciprofloxacin-hydrocortisone suspension
Abstract:The invention is directed to a method of treating otitis which comprises introducing an antibacterially-effective amount of a composition comprising a non-ototoxic, topical, otic pharmaceutic composition comprising (a) ciprofloxacin in aqueous solution in an amount effective for antibacterial action; (b) a non-ionic viscosity augmenter unaffected by pH and ionic level, said viscosity augmenter being present in an amount effective for augmenting viscosity of the composition to a viscosity greater than that of water, said viscosity augmenter being at least 85% hydrolyzed polyvinyl alcohol; (c) a non-ototoxic preservative present in an amount effective for antibacterial action, the preservative being benzyl alcohol; (d) water sufficient to produce an aqueous composition; (e) hydrocortisone in aqueous suspension in an amount effective for anti-inflammatory action; (f) lecithin in an amount effective for enhancing suspension of other constituents in the composition; and (g) polysorbate ranging from polysorbate 20 to 80 in an amount effective for spreading the preparation on a hydrophobic skin surface to the site of infection or inflammation.
Inventor(s): Purwar; Shivaji (Monroe, CT), Goldman; David (Easton, CT)
Assignee: Bayer Corporation (Pittsburgh, PA)
Application Number:08/838,473
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation;
Patent Metrics:
Source: PatentQuant.com
Field: Not categorized
Back Citations: 12th percentile
Forward Citations: 5th percentile

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International Patent Family for Patent: 5,843,930

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria214931► subscribe
Australia5984096► subscribe
Australia708540► 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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