Use of certain anionic surfactants to enhance antimicrobial effectiveness of ophthalmic compositions
Patent 5540918 Issued on July 30, 1996. Estimated Expiration Date: 
June 7, 2015. 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.
June 7, 2015. 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 References 3275503 Disinfecting method and compositions Sustained release, comfort formulation for glaucoma therapy Patent #: 4911920 InventorsAssigneeApplicationNo. 472446 filed on 06/07/1995US Classes:424/78.04, Ophthalmic preparation514/912OPHTHALMICExaminersPrimary: Azpuru, CarlosAttorney, Agent or FirmForeign Patent References
International ClassA61K 031/74AbstractCertain anionic surfactants are used to enhance antimicrobial effectiveness in comfortable, sustained release ophthalmic compositions containing polyelectrolytes, such as carboxyvinyl polymers, polystyrene sulfonic acid polymers and cationic exchange resins, as well as at least one active ingredient. | |
