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Last Updated: September 27, 2022

Details for Patent: 6,911,217

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Summary for Patent: 6,911,217
Title: Controlled release bead, a method of producing the same and multiple unit formulation comprising it
Abstract:A controlled release bead comprises: (i) a core unit of a substantially water-soluble or water-swellable inert material; (ii) a first layer on the core unit of a substantially water-insoluble polymer; (iii) a second layer covering the first layer and containing an active ingredient; and (iv) a third layer of polymer on the second layer effective for controlled release of the active ingredient, wherein the first layer is adapted to control water penetration into the core. A method of producing the controlled release bead is also disclosed.
Inventor(s): Gren; Torkel (Kalamazoo, MI), Ringberg; Anders (Stockholm, SE), Wikberg; Martin (Kullavik, SE), Wald; Randy J. (Portage, MI)
Assignee: Pharmacia AB (Stockholm, SE)
Application Number:09/763,281
Patent Claim Types:
see list of patent claims
Compound; Composition; Formulation; Dosage form; Use;

Drugs Protected by US Patent 6,911,217

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

Foreign Priority and PCT Information for Patent: 6,911,217

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
PCT/SE99/01463Aug 26, 1999
PCT Information
PCT FiledNovember 11, 1999PCT Application Number:PCT/SE99/02052
PCT Publication Date:May 18, 2000PCT Publication Number: WO00/27364

International Family Members for US Patent 6,911,217

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 1323 See Plans and Pricing
African Regional IP Organization (ARIPO) 1529 See Plans and Pricing
Argentina 027815 See Plans and Pricing
Argentina 029311 See Plans and Pricing
Austria 247458 See Plans and Pricing
Austria 300941 See Plans and Pricing
Austria 405254 See Plans and Pricing
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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