Conversion of liquid filled gelatin capsules into controlled release systems by multiple coatings
May 25, 2021. 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 ReferencesOsmotic dispenser with means for dispensing active agent responsive to osmotic gradient Device having variable volume chamber for dispensing useful agent Osmotic device with hydrogel driving member Osmotic device with dual thermodynamic activity Osmotic capsule Osmotic device for administering certain drugs Osmotic system comprising plurality of members for dispensing drug Osmotic dosage system for delivering a formulation comprising liquid carrier and drug Pharmaceutical tablet, completely coated, for controlled release of active principles that present problems of bio-availability linked to gastro-intestinal absorption Patent #: 6027748 InventorsApplicationNo. 866036 filed on 05/25/2001US Classes:424/463, Coated capsules424/451, Capsules (e.g., of gelatin, of chocolate, etc.)424/452, With claimed designated perfecting feature in contents (e.g., excipient, lubricant, etc.)424/453, Telescoping two piece424/456, Gelatin424/457, Sustained or differential release424/468, Sustained or differential release type424/469, Discrete particles in supporting matrix424/473With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.)ExaminersPrimary: Page, Thurman K.Assistant: Di Nola-Baron, Liliana Attorney, Agent or FirmForeign Patent References
International ClassA61K 009/48AbstractA dosage form comprising a gelatin capsule formed with a composite wall and containing a liquid, active agent formulation where the wall comprises a barrier layer formed over the external surface of the gelatin capsule, an expandable layer formed over the barrier layer and a semipermeable layer formed over the expandable layer is described. The dosage forms and methods provide for the conversion of standard gelatin, liquid formulation capsules into controlled, release dosage forms that permit the controlled release of the active agent into the environment of use over time.Field of SearchGelatinCapsules (e.g., of gelatin, of chocolate, etc.) With claimed designated perfecting feature in contents (e.g., excipient, lubricant, etc.) Telescoping two piece Sustained or differential release Sustained or differential release type Discrete particles in supporting matrix With porous, perforated, apertured, or sieved layer (e.g., dialyzing layer, microporous layer, etc.) Coated capsules | |
