Details for Patent: 5,656,296
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Summary for Patent: 5,656,296
Title: | Dual control sustained release drug delivery systems and methods for preparing same |
Abstract: | The present invention pertains to a dual control sustained release drug delivery system which comprises a core and a porous coating layer over the core, wherein the coated core comprises (A) a core comprising in percentages by weight of the core composition (a) a medicament present in an amount from about 60% to about 90%; (b) an edible material having a melting point from about 25.degree. C. to about 100.degree. C. selected from the group consisting of (i) fatty acids having an iodine value from about 1 to about 10, (ii) natural waxes, (iii) synthetic waxes, and (iv) mixtures thereof, present in an amount from about 5% to about 40%; and (B) a porous coating layer over the core comprising in percentages by weight of the coating layer composition (a) a pH-independent water-insoluble polymer present in an amount from about 40% to about 80%; and (b) a water-soluble film forming polymer present in an amount from about 20% to about 60%. |
Inventor(s): | Khan; Sadath U. (Randolph, NJ), Ying; Phyllis (Morristown, NJ), Nesbitt; Russell U. (Somerville, NJ), Fawzi; Mahdi B. (Flanders, NJ), Weiss; Jay (East Brunswick, NJ) |
Assignee: | Warner-Lambert Company (Morris Plains, NJ) |
Application Number: | 08/476,490 |
Patent Claim Types: see list of patent claims | Delivery; Composition; Process; Dosage form; |
Drugs Protected by US Patent 5,656,296
Applicant | Tradename | Generic Name | Dosage | NDA | Approval Date | TE | Type | RLD | RS | Patent No. | Patent Expiration | Product | Substance | Delist Req. | Patented / Exclusive Use | Submissiondate |
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>Applicant | >Tradename | >Generic Name | >Dosage | >NDA | >Approval Date | >TE | >Type | >RLD | >RS | >Patent No. | >Patent Expiration | >Product | >Substance | >Delist Req. | >Patented / Exclusive Use | >Submissiondate |