Method and composition for the preparation of controlled long-acting pharmaceuticals
Patent 4259314 Issued on March 31, 1981. Estimated Expiration Date: 
December 10, 1999. 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.
December 10, 1999. 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 3424842 3776001 3845201 3868445 3870790 3875300 Solid state ophthalmic medication Patent #: 4179497 InventorApplicationNo. 06/102227 filed on 12/10/1979US Classes:424/469, Discrete particles in supporting matrix514/781Cellulose or derivativeExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 9/02 (20060101)A61K 9/20 (20060101) AbstractA method and composition for the preparation of controlled long-acting pharmaceuticals using a dry carrier or base material comprising an effective amount of hydroxypropyl methylcellulose and hydroxypropyl cellulose suitable for use with both hygroscopic and non-hygroscopic materials. The controlled long-acting products of the invention are suitable for use in the form of lozenges, buccal tablets, oral tablets or suppositories.Other References
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