Sustained action dosage forms
Patent 4137300 Issued on January 30, 1979. Estimated Expiration Date: 
June 14, 1997. 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 14, 1997. 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 874310 2895880 3062720 3079303 3108046 3147187 3184386 InventorsAssigneeApplicationNo. 05/806424 filed on 06/14/1977US Classes:424/460, Containing proteins or derivatives thereof (e.g., gelatin, etc.)424/468Sustained or differential release typeExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 9/20 (20060101)A61K 9/50 (20060101) A61K 9/48 (20060101) A61K 9/16 (20060101) AbstractBy incorporating solid drug substances into mixtures of higher alkanols and/or alkanoic acids melting above 25° C, forming granules thereof and covering them with a prolamine, a pharmaceutical dosage form is obtained, which slowly and evenly releases the drug within the gastrointestinal tract of a mammal. | |
