Pharmaceutical tablet, completely coated, for controlled release of active principles that present problems of bio-availability linked to gastro-intestinal absorption
Patent 6027748 Issued on February 22, 2000. Estimated Expiration Date: 
January 6, 2018. 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.
January 6, 2018. 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 ReferencesDihydropyridine depot formulation Patent #: 4933186 InventorsAssigneeApplicationNo. 003406 filed on 01/06/1998US Classes:424/458, Containing discrete coated particles pellets, granules, or beads424/451, Capsules (e.g., of gelatin, of chocolate, etc.)424/452, With claimed designated perfecting feature in contents (e.g., excipient, lubricant, etc.)424/456, Gelatin424/457, Sustained or differential release424/461, Containing polysaccharide (e.g., cellulose sugars, etc.)424/462, Containing solid synthetic polymers424/468, Sustained or differential release type424/472, Layered unitary dosage forms424/480, Cellulose or derivative424/482, Containing solid synthetic polymers514/772.2, Polyvinyl alcohol514/772.3, Solid synthetic organic polymer514/777, Carbohydrate or lignin, or derivative514/778, Starch or derivative514/785, Carboxylic acid ester514/786GlycerideExaminersPrimary: Page, Thurman K.Assistant: Spear, James M. Attorney, Agent or FirmInternational ClassesA61K 009/32A61K 009/36 A61K 009/58 A61K 009/62 Foreign Application Priority Data1997-01-08 ITAbstractDescribed herein is a particular type of pharmaceutical tablet, for oral use, which is formed by one or more layers, and is specifically designed for controlled release of active principles that present problems of bio-availability linked to absorption in the gastro-intestinal tract, and in particular active principles that present an erratic and unpredictable absorption linked to the presence or absence of food at the level of the stomach and/or of the first portion of the small intestine, the said pharmaceutical form being characterized in that it is completely coated with one or more films of a biocompatible and biodegradable polymeric material.Field of SearchCellulose or derivativeContaining natural gums or resins Containing solid synthetic polymers Organic coatings Containing discrete coated particles pellets, granules, or beads Organic coatings Containing polysaccharide (e.g., cellulose sugars, etc.) Containing solid synthetic polymers Sustained or differential release type Capsules (e.g., of gelatin, of chocolate, etc.) With claimed designated perfecting feature in contents (e.g., excipient, lubricant, etc.) Gelatin Sustained or differential release Layered unitary dosage forms | |
