Pharmaceutical composition
Patent 4639370 Issued on January 27, 1987. Estimated Expiration Date: 
February 6, 2005. 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 6, 2005. 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 ReferencesNitroglycerin preparations Aspirin tablet Patent #: 4555399 InventorApplicationNo. 06/698815 filed on 02/06/1985US Classes:514/772.5, Heterocyclic monomer514/178, Oxygen single bonded to a ring carbon of the cyclopentanohydrophenanthrene ring system514/781Cellulose or derivativeExaminersPrimary: Roberts, Elbert L.Attorney, Agent or FirmInternational ClassA61K 9/14 (20060101)Foreign Application Priority Data1984-02-08 GBAbstractA water-swellable, water-insoluble polymer is loaded with a biologically active substance or substance convertible into a biologically active substance in vivo by preparing and grinding a mixture of a said substance with a water-swellable, water-insoluble polymer in a weight ratio of the said substance:polymer of from 1:0.1 to 1:100. The thus-loaded polymer is useful as a pharmaceutical composition. | |
