Use of combinations gelling polysaccharides and finely divided drug carrier substrates in topical ophthalmic compositions
March 25, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOcular drug delivery device Mixed xanthan gum and locust beam gum therapeutic compositions Xanthan gum therapeutic compositions Locust bean gum therapeutic compositions Ethers of hydroxybenzothiazole-2-sulfonamide for the topical treatment of elevated intraocular pressure Ophthalmological composition of the type which undergoes liquid-gel phase transition Sustained release, comfort formulation for glaucoma therapy Sustained release formulation containing an ion-exchange resin Viscoelastic fluid for use in surgery and other therapies and method of using same Patent #: 4983585 InventorsAssigneeApplicationNo. 857673 filed on 03/25/1992US Classes:514/54, Polysaccharide424/427, Ocular514/57, Cellulose or derivative514/912, OPHTHALMIC514/913, Glaucoma536/1.11, Carbohydrates or derivatives536/114, Gums or derivatives536/123.1PolysaccharidesExaminersPrimary: Wityshyn, Michael G.Assistant: Leary, Louise N. Attorney, Agent or FirmInternational ClassesA61K 031/715A61K 031/70 AbstractOphthalmic compositions comprising combinations of gelling polysaccharides and finely-divided drug carrier substrates which become relatively more viscous on contact with the eye are disclosed. These ophthalmic compositions are both comfortable and long-lasting Ophthalmic compositions further comprising a pharmaceutically active drug are also disclosed, as are methods of use.Other References
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