Biodegradable polypeptide and the use thereof for the gradual release of drugs
Patent 4976962 Issued on December 11, 1990. Estimated Expiration Date: 
July 11, 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.
July 11, 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 References 3867352 Synthetic membrane for wound-dressings Biodegradable, implantable drug delivery depots, and method for preparing and using the same Patent #: 4450150 InventorsApplicationNo. 378072 filed on 07/11/1989US Classes:424/424, Membrane or diffusion barrier424/425, Diffusion barrier is matrix424/426, Errodable, resorbable, or dissolving424/451, Capsules (e.g., of gelatin, of chocolate, etc.)424/457, Sustained or differential release424/464, Tablets, lozenges, or pills424/486, Synthetic polymer514/2, Peptide containing (e.g., protein, peptones, fibrinogen, etc.) DOAI514/773, Peptide containing514/963, Microcapsule-sustained or differential release514/964, SUSTAINED OR DIFFERENTIAL RELEASE TYPE514/965Discrete particles in supporting matrixExaminersPrimary: Nutter, Nathan M.International ClassesA61F 002/00A61K 009/48 A61K 009/52 A61K 009/20 Foreign Application Priority Data1984-10-19 CHAbstractBiodegradable alkyloxycarbonylmethyl or aryloxycarbonylmethyl polyaspartate and polyglutamate which can be used as a carrier for drugs which are either in the encapsulated state or are incorporated in the polymer matrix. The polypeptide thus loaded degrades enzymatically in the organ where it has been placed and thus gradually releases the drug which it contains.Field of SearchPeptide containing (e.g., protein, peptones, fibrinogen, etc.) DOAIPeptide containing CAPSULE (E.G., GELATIN, ETC.) Microcapsule-sustained or differential release SUSTAINED OR DIFFERENTIAL RELEASE TYPE Discrete particles in supporting matrix Capsules (e.g., of gelatin, of chocolate, etc.) Sustained or differential release Tablets, lozenges, or pills Synthetic polymer Implant or insert Membrane or diffusion barrier Diffusion barrier is matrix Errodable, resorbable, or dissolving | |
