Details for Patent: 6,911,217

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

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

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
	PCT/SE99/01463	Aug 26, 1999

PCT Information
PCT Filed	November 11, 1999	PCT Application Number:	PCT/SE99/02052
PCT Publication Date:	May 18, 2000	PCT 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
African Regional IP Organization (ARIPO)	1529
Argentina	027815
Argentina	029311
Austria	247458
Austria	300941