Systems for the controlled release of macromolecules
August 10, 2001. 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 3854480 3880991 3903880 Copolymers Vaginal drug dispensing device Ocular therapeutic system manufactured from copolymer Ocular therapeutic system with selected membranes for administering ophthalmic drug Drug-delivery device comprising certain polymeric materials for controlled release of drug Systems for the controlled release of macromolecules Patent #: 4164560 InventorsAssigneeApplicationNo. 06/291769 filed on 08/10/1981US Classes:424/425, Diffusion barrier is matrix424/427, Ocular424/430, Vaginal, urethral, uterine424/486, Synthetic polymer424/85.1LYMPHOKINEExaminersPrimary: Rose, Shep K.International ClassesA61K 9/00 (20060101)A61K 9/16 (20060101) A61K 9/20 (20060101) AbstractDelivery systems manufactured in the form of polymeric compositions for the controlled delivery of macromolecules to environments of use are disclosed. The systems are characterized as two-phase compositions comprising a phase formed of an insoluble polymeric matrix having limited water sorptivity containing in admixture therein an interpenetrating phase formed of a particulate hydrophilic water swellable, biologically active macromolecular material.Other References
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