Long acting diclofenac sodium preparation
Patent 4948581 Issued on August 14, 1990. Estimated Expiration Date: 
February 15, 2009. 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.
February 15, 2009. 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 ReferencesSolid, stable dosage forms with an elastic film coating Patent #: 4798724 InventorsAssigneeApplicationNo. 311333 filed on 02/15/1989US Classes:424/497, Containing solid synthetic polymers514/567Benzene ring nonionically bondedExaminersPrimary: Schofer, Joseph L.Assistant: Kulkosky, Peter F. Attorney, Agent or FirmForeign Patent References
International ClassesA61K 031/78A61N 037/12 AbstractA diclofenac sodium preparation comprising a rapidly soluble component including an active ingredient consisting essentially of diclofenac sodium, and an enteric component including an active ingredient consisting essentially of diclofenac sodium and an enteric coating therefor provides prolonged action when the enteric coating is formed from a mixture comprising 100 parts by weight of a methacrylic acid-methyl methacrylate copolymer, 3-40 parts by weight of a glycerin fatty acid ester, and 1-150 parts by weight of talc.Field of SearchBenzene ring nonionically bonded | |
