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Last Updated: August 3, 2021

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Details for Patent: 4,894,240

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Summary for Patent: 4,894,240
Title: Controlled absorption diltiazem formulation for once-daily administration
Abstract:A diltiazem pellet formulation for oral administration comprises a core of diltiazem or a pharmaceutically acceptable salt thereof in association with an organic acid, and a multi-layer membrane surrounding the core and containing a major proportion of a pharmaceutically acceptable film-forming, water insoluble synthetic polymer and a minor proportion of a pharmaceutically acceptable film-forming, water soluble synthetic polymer. The number of layers in the membrane and the ratio of the water soluble to water insoluble polymer being effective to permit release of the diltiazem from the pellet at a rate allowing controlled absorption thereof over a twenty four hour period following oral administration.
Inventor(s): Geoghegan; Edward J. (Athlone, IE), Mulligan; Seamus (Athlone, IE), Panoz; Donald E. (Tuckerstown, BM)
Assignee: Elan Corporation plc (Athlone, IE)
Application Number:07/121,225
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form; Device; Composition;

Drugs Protected by US Patent 4,894,240

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

International Family Members for US Patent 4,894,240

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 241987 ⤷  Try it Free
Austria 66813 ⤷  Try it Free
Australia 2377588 ⤷  Try it Free
Australia 615221 ⤷  Try it Free
Australia 634660 ⤷  Try it Free
Australia 7943591 ⤷  Try it Free
Belgium 901359 ⤷  Try it Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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