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Last Updated: April 16, 2024

Details for Patent: RE33994

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Summary for Patent: RE33994

Title:	Pharmaceutical delivery system
Abstract:	A composition for use in an aqueous environment which .[.comprise.]. .Iadd.comprises .Iaddend.a formulation containing a water-soluble pharmaceutically beneficial agent, a water-insoluble, water-permeable film coating surrounding the formulation, and particulate, water-soluble, pore-forming material dispersed within the film coating. The questions raised in reexamination request No. 90/001,344, filed Oct. 5, 1987, have been considered and the results thereof are reflected in this reissue patent which constitutes the reexamination certificate required by 35 U.S.C. 307 as provided in 37 CFR 1.570(e).
Inventor(s):	Baker; Richard W. (Palo Alto, CA), Brooke; James W. (Sisters, OR)
Assignee:	Burroughs Wellcome Co. (Research Triangle Park, NC)
Application Number:	07/390,518
Patent Claim Types: see list of patent claims	Composition; Dosage form;

Drugs Protected by US Patent RE33994

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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
>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: RE33994

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
United Kingdom	8322007	Aug 16, 1983

International Family Members for US Patent RE33994

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Canada	1239034	⤷ Try a Trial
Canada	1321754	⤷ Try a Trial
Germany	10075031	⤷ Try a Trial
Germany	3485618	⤷ Try a Trial
Germany	3486409	⤷ Try a Trial
European Patent Office	0171457	⤷ Try a Trial
European Patent Office	0467488	⤷ Try a Trial	SPC/GB00/019	United Kingdom	⤷ Try a Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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