Stabilized E-series prostaglandins
Patent 3954787 Issued on May 4, 1976. Estimated Expiration Date: 
May 4, 1993. 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.
May 4, 1993. 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 3755599 3826823 3851052 InventorApplicationNo. 601038 filed on 08/01/1975US Classes:548/253, The chalcogen, X, is in a -C(=X)- group514/381, Tetrazoles (including hydrogenated)514/470, Chalcogen or nitrogen bonded directly to the hetero ring560/2, With preservative562/465, Oxy562/503, Cyclopentyl (e.g., prostoglandins, etc.)564/152, Plural carboxamide groups containing or containing plural carbonyls bonded directly to the same nitrogen564/158, Hydroxy, bonded directly to carbon, or ether containing (H of -OH may be replaced by a substituted or unsubstituted ammonium ion or a Group IA or IIA light metal)564/98, Substituent Q is alkyl564/99Benzene ring in a substituent EExaminersPrimary: Rosen, SamAttorney, Agent or FirmAbstractA lyophilized pharmaceutical composition comprising a prostaglandin of the E-series and an excipient selected from the group consisting of sodium chloride, cyclodextrin, succinic acid and polyvinylpyrrolidone. |
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